GENERAL TECHNICAL INFORMATION
PLATFORMS

Properties

Platforms
Interroll Conveyor Roller Series are arranged into five so-called
platforms. Each platform is characterized by a certain type ofbearing and certain materials – the two key factors for theoperation and application possibilities of the products.
The following applies within a platform:· The bearings and materials for the bearing housing and seal
are identical· The size of the bearings may differ· The versions are produced by the combination of shaft/tube
dimensions and drive heads as well as the materials

Platform 1100

Platform 1100 provides for cost-effective solutions and isparticularly suitable for gravity applications under normal
ambient temperatures.
For information about properties and application areas of thepolymers used, please refer to the chapter Material Specification
Material Specification.
Bearings and materials
The bearing is made of polymer with balls made of uncoatedsteel or stainless steel. The outer ring and inner cone of the
bearing are made of polypropylene. The bearings are lubricatedwith a food-safe grease.

Platform 1200

Associated roller series

Catalog page

Gravity conveyor roller

1100

page 30

Polymer conveyor wheel

2130

page 140

Polymer conveyor wheel

2370

page 146

Wheel track

BU40 withpolymer wheels

page 168

Associated roller series

Catalog page

Steel conveyor roller

1200

page 36

Steel conveyor wheel

2200

page 144

Wheel track

BU40 with steel
rollers

page 168

Application
Application
·
·
·
·
·

8

For gravity applications
Particularly smooth operation of conveyor rollers
Stainless steel version suitable for moist areas
For lightweight and medium-heavy materials to be conveyed
Not suitable for drive conveyors· For temperature ranges outside of the limits for polymer· For lightweight and medium-heavy materials to be conveyed· For driven and non-driven conveyors
Properties
Platform 1200 is specifically designed for use in extreme ambient
temperatures. All versions are antistatic.

© 12 | 2021 Interroll

Bearings and materials

Bearings and materials

The pressed steel bearing seats and internal rings of the ballbearing are hardened and galvanized zinc-plated. The shape ofthe ball bearing is designed specifically for conveyor rollers andtolerates greater deflection of the bearing than comparable
precision ball bearings.

The standard version bearings are precision ball bearings
6205 2RZ or 6204 2RZ. Depending on the series, the drive
elements, such as sprockets or toothed belt drive heads, aremade of fiberglass-reinforced polyamide and polyoxymethylene
or steel. The bearing housing on the non-driven side and the seals
are made of polyamide.

Associated roller series

Catalog page

Heavy-duty universal conveyor
roller1450

Heavy-duty conveyor roller

3950

page 42

page 130

Application· For particularly heavy-duty loads and heavy individual loads· Suitable for extreme temperatures with steel bearing housings· For driven and non-driven conveyors
Properties
Platform 1450 is specifically designed for high loads caused byheavy individual weights. One version is available for deep
freeze applications.
The drive elements made of technopolymers are designed to be
twist-proof with a form-fit connection with the tube. The steel
drive heads and flanges are all galvanized zinc-plated after
being welded to the tube for optimum corrosion protection. All of
the welds run right around the tube, not just in certain areas.
For information about properties and application areas of thepolymers used, please refer to the chapter Material Specification
Material specification.

© 12 | 2021 Interroll

Rollers | Conveying elements | Accessories

Platform 1500

Associated roller series

Catalog page

Slide bearing conveyor roller

1500

page 48

Omniwheel

2500

page 148

Omnimat module

2800

page 154

Wheel track

Flowaypage 166

Application· For wet and hygienic areas· For lightweight and medium-heavy materials to be conveyed· For driven and non-driven conveyors
Properties
Platform 1500 is specifically designed for use in hygienic areasand in areas at risk of corrosion.
All of the bearing housings are sealed internally so that liquids orother substances cannot penetrate the rollers. The conveyor
rollers can be cleaned with conventional detergents.
For information about properties and application areas of thepolymers used, please refer to the chapter Material Specification
Material specification.

9

Planning basics

Platform 1450

General technical information

GENERAL TECHNICAL INFORMATION
PLATFORMS

GENERAL TECHNICAL INFORMATION
PLATFORMS

Bearings and materials
The bearings are designed as slide bearings and are made ofpolymer (polyoxymethylene with the addition ofpolytetrafluorethylene (PTFE)) with a stainless steel shaft pin. The
materials and surfaces of the bearing pair are aligned to eachother so that the bearings can run dry without lubrication. The
tubes are made of polymer or stainless steel. All of the materials
are completely corrosion-proof.

Platform 1700

Associated roller series
RollerDrive

Catalog page
EC5000–Application····

For universal use
For particularly quiet conveyance at high speeds
For lightweight and medium-heavy materials to be conveyed
For driven and non-driven conveyors

Properties
Platform 1700 is designed for high loads at very low noise levels
and provides the ultimate in flexibility with its different drive
options. The bearing design comprising polyamide bearing
housing, precision ball bearing and a polypropylene orpolyamide seal produces an extremely quiet conveyor roller,
which can simultaneously carry heavy loads. Bearing housingsand belt drive heads are installed in the tubes in a form-fit way(flanging for steel tube and press-in edge for polymer tube). The
unique feature about this platform 1700 is the tapered shaftshuttle, which combines the benefits of a female threaded shaft
and a spring-loaded shaft (cf. shaft-shuttle shaft design
page 13).
For information about properties and application areas of thepolymers used, please refer to the chapter Material Specification
Material specification.
Associated roller series

Catalog page

Bearings and materials
Sealed DIN precision ball bearings 6002 2RZ, 689 2Z and
6003 2RZ are used. They are greased with a silicon-free lubricant
and have a secure bearing housing in the base of the roller
thanks to a snap-on edge. In addition, the ball bearing 6002 2RZ
is oiled or available in a stainless steel design.
The integral polypropylene seal is fixed in the internal ring of theball bearing and has three functions: Protection of the ballbearing against coarse dirt and splashing water, diametercompensation of shaft and internal ring as well as diverting axial
forces into the ball bearing.

Universal conveyor roller

1700 light

page 54

Universal conveyor roller

1700

page 58

Tapered universal conveyor roller

1700KXO

page 66

Universal conveyor roller

1700 heavy

page 72

Pressure roller

2600

page 150

Fixed drive conveyor roller

3500 light

page 76

Fixed drive conveyor roller

3500

page 80

Fixed drive curve roller

3500KXO light

page 92

Fixed drive curve roller

3500KXO

page 96

Fixed drive conveyor roller

3500 heavy

page 102

Friction conveyor roller, double
friction conveyor roller

3800 light

page 108

Friction conveyor roller

3800

page 112

Double friction conveyor roller

3870

page 124

Roller track

BU50

page 174

Magnetic speed controller

MSC 50page 13610© 12 | 2021 Interroll

Bearings
Interroll utilizes different bearings, such as slide bearings or
special ball bearings made of polypropylene with steel balls.
However, the following section describes only the precision ballbearings used by Interroll.
Further information on the bearing assemblies (ball bearings withbearing housings and seals) is provided in the Platforms chapter(Platforms) and under Material Specification (Material
specification).
All precision ball bearings used are designed as 2RZ, except for
type 689. The steel sealing discs form a narrow sealing gap, but
are non-contacting. They ensure an optimal startup of the roller.
The steel-reinforced rubber sealing lips (NBR) lie against the innerring under external pressure and thus provide an exceptional
sealing quality comparable to the 2RS version. The oil-lubricatedversion is characterized by its easy start and exceptional easyrunning properties.

Associated roller series

Catalog page

Steel ball transfer unit

5000

page 156

Polymer ball transfer
unit

5500

page 162

Application· For pushing, e.g. of steel or wooden plates· For aligning medium-heavy and heavy materials
Properties
The platform 5000 is designed for omni-directional pushing oraligning of medium-heavy and heavy materials.
The series differ in the following features:
·
·
·
·
·
·

Precision ball bearings in accordance with DIN 625 have thefollowing properties:
·
·
·
·
·
·

Series 689, 60 and 62 standard DIN grooved ball bearings
Excellent load capacity and operational life
Precision ball race
Extremely temperature-resistantLow-noise operation
With stainless steel design: manufactured throughout fromcorrosion-proof material

All precision ball bearings are specified by Interroll beyond therequirements of DIN 625 for optimum, durable and constantoperation. Interroll specifies the bearing play, lubrication andsealing etc.

Rollers | Conveying elements | Accessories

Platform 5000

General technical information

GENERAL TECHNICAL INFORMATIONBEARINGS

Housing design
Fastener
Material of housing
Material of support balls
Material of main balls
Load capacities

Bearings and materials© 12 | 2021 Interroll

Planning basics

The principle of the ball roller consists of several small support
balls that support a larger main ball. The main ball can be madeof polymer or steel, depending on the series. The housing can beof polyamide or steel.

11

GENERAL TECHNICAL INFORMATIONSHAFTS

Shafts
Shaft materialInterroll offers shafts made of three different materials or
finishings:· Uncoated steel· Zinc-plated steel· Stainless steel
All shafts are manufactured from cold-drawn steel.
Interroll recommends to match the shaft material to the materialof the side profile.

· With driven rollers, play between the shaft and the mounting
hole (inevitably due to oblique installation) will create noise,
particularly when starting and stopping the turning motion(especially at hex shafts).
· Depending on the selection of material pairing (shaft/side
profile) and dimensions (size of hole and spring-loaded shaft), it
may lead to wear of the shaft (hexagon looses its edges) or theside profile.
· Shield for zinc-plated shaft material is not zinc-plated
Female threaded shaft

Zinc-plated shafts are cut from galvanized zinc-plated rod
material, thus the front faces of the female threaded or springloaded shafts are always without zinc plating.
Male threaded shafts cannot be zinc-plated, otherwise they posea risk of blocked threads due to the zinc layer. For this reason,
Interroll recommends selecting either male threaded or flatted
shafts in stainless steel to obtain adequate corrosion protection.

Manufacturing process
After the sawing process, the shafts are milled. Milling reduces
deformations of the shaft ends or damages on the side profile
during installation to a minimum. Furthermore, milling removes
sharp burrs, thereby ruling out a risk of injuries. Hence, thiscreates not only safe, but also perfectly manageable rollers.
For threaded holes, the centering holes are drilled in a first step
to ensure precisely centered threaded holes in the shaft.

Versions
Spring-loaded shaft

Spring-loaded shafts can be manufactured from round material
or hex material.
· Simple shaft design· Very fast and simple installation and removal· Suitable crosslinks have to be provided between the side
profiles to reinforce the conveyor.

12

Female threaded shafts can be manufactured from roundmaterial or hex material.
· Lead to a very stable frame construction – generally, no use ofcrosslinks is required· A firm connection causes a lot less noise than shafts that are
not firmly screwed together.
· The roller shaft and side profile stabilize each other resulting in
the conveyor rollers having a greater load capacity thanloosely fitted rollers.
· Wear-free towards spring-loaded shafts due to firm connectionin the side profile· Medium-fast installation and removal· Shield for zinc-plated shaft material not zinc-plated· Safe discharge of static charges (anti-static design)
Interroll offers the following threads and thread depths:

ThreadThread depths
[mm]

M5

12

M6

15

M8

15

M10

20

M12

20, 25

M16

25© 12 | 2021 Interroll

Shafts with shaft-shuttle are made of 8-mm hex material. Bothends are fitted with the shaft-shuttle made of polyamide. The
conical shaft-shuttle reduces the hex surface towards the shaft
end.
· Very fast and simple installation and removal· Similar low noise level as female threaded shafts· Wear-free towards spring-loaded shafts due to zero-clearance
seating of the shaft free in the side profile (11 mm hex hole,+0.3/+0.8 mm)· Anti-static version· Particularly suited for modernizing systems; side profiles thathave been in use for a long time generally show hightolerances in the holes· Evenly aligned, anti-rotation shuttles (positioning one side issufficient)· Both shaft ends can be pushed in· Suitable crosslinks have to be provided between the side
profiles to reinforce the conveyor· No scratching of high-quality side profiles during installation
and removal
Male threaded shaft· A firm connection causes a lot less noise than shafts that are
not screwed together· Very stable frame construction – generally, no use of crosslinks
is required· The roller shaft and side profile stabilize each other resulting in
the conveyor rollers having a greater load capacity thanloosely fitted rollers.
· Wear-free towards spring-loaded shafts due to firm connectionin the side profile· The two nuts at the seal and two nuts with washers forfastening are part of the scope of delivery· Available only in the versions uncoated steel or stainless steel
Flatted shaft

Flatted shafts are made of round material. They have two lateral,
parallel milled sections at the shaft ends, which fit into
corresponding side profile holes, e.g. into side profiles with open
longitudinal holes.
· Very fast and simple installation and removal· Suitable crosslinks have to be provided between the side
profiles to reinforce the conveyor.
· Lower noise level than spring-loaded shafts since only minor
play is required (no oblique installation)

Rollers | Conveying elements | Accessories

Shaft with shaft-shuttle

General technical information

GENERAL TECHNICAL INFORMATIONSHAFTS

A flat shaft can be created on both sides as well as on one side
only (D shaft). The flat shaft can be defined in increments of 0.5
mm. Minimum and maximum dimensions depend on the selectedshaft diameter.

Planning basics

Male threaded shafts are made of round material.
Male threaded shafts feature a thread cut onto the shaft ends. In
each case, a nut is screwed onto the shaft in front of the seal. The
two nuts are subtracted from the dimension of the "lane width"
during the production of the roller. They shorten the usable lengthof the roller compared to rollers with female threaded shafts.

© 12 | 2021 Interroll

13

GENERAL TECHNICAL INFORMATIONSHAFTS

Fixed shaft

a

d1 =

S ∙ (H + D/2)+d
(EL – 1)

D

· Shields, or flat shafts if needed, are not zinc-plated for zincplated shaft material.
· Simple shaft design· Very fast and simple installation and removal with fastening
holes open to the top· Suitable crosslinks have to be provided between the side
profiles to reinforce the conveyor· With driven rollers, play between the shaft and the mounting
hole will create noise, particularly when starting and stopping
the turning motion. For this reason, Interroll recommends thelowest play possible.

The following formula and the drawings should provide support insufficiently dimensioning the fastening hole. For this purpose, anoversize of 0.5 mm of d1 compared to the shaft diameter issufficient in most cases. In case of side profiles with different
heights, the dimension H of the higher profile must always be
used for the calculation.

H

Fixed shafts can be manufactured from hexagon or roundmaterial. It is possible to fit the round shafts with a flat shaft. The
shafts are mostly inserted in fastening holes in the side profile thatare open at the top. To rule out that the shaft turns inside theguide of the side profile, Interroll recommends the use of hexagon
shafts or round flatted shafts in corresponding side profiles
intended for this purpose.

Installation instructions
EL

1.

3.

14

d

2.

The hole dimension of the side profile should be as small as
possible on conveyor rollers with female threaded shafts.
Larger holes can lead to a higher tolerance of the roller pitch
and to the height differences of several conveyor rollers. The
function of the roller conveyor can be affected by the holeand screw selection.
For softer side profiles made out of aluminum or thickpowder coatings, female threaded shafts should always be
selected with the largest possible diameter and the smallest
possible thread. This minimizes the risk of the shaft
penetrating the aluminum profile.
The installation of conveyor rollers with spring-loaded shaft
must be done in an oblique way. That is the spring-loaded
shaft must be inserted in a hole of the side profile.
Afterwards, the other roller end is moved from an oblique toa horizontal position. The spring-loaded shaft can be inserted
into the hole on the opposite side only in the horizontal
position. Too small a hole could make installation significantly
more difficult.

d1

The following should be considered in relation to the selection ofa shaft and construction of the side profiles:S© 12 | 2021 Interroll

Scope of delivery
Material required for fastening the rollers is not part of the scopeof delivery, such as washers, nuts, screws.
Exceptions
0.5

RL

Scope of delivery

EL=AGL

Rollers with male threaded shafts

Nuts and washers

Rollers of series 3500KXO light

Taper disks and ball sockets

Labeling
All shafts starting with a length of 100 mm are labeled with therespective production order number. The number is located on
the shaft inside the tube. It allows users to order an identicalroller without having to provide information about the product,such as the length.

Example: At the time of ordering, a lane width (EL = installation
length) of 500 mm is specified for a roller of series 1700 withfemale threaded shaft. The dimension from seal to seal measuresapprox. 499 mm. Hence, the roller has an axial play of
approx. 1 mm (see figure above).
16.5

Axial play

1

7.1
35

U
RL

0.5
5

EL=AGL=RL+40

The axial play must not be too high. Rollers with tapered shaftshuttle or RollerDrive with tapered spring-loaded shaft aredesigned so that they have the best possible fit for the hole in theside profile, even in cases of high hole tolerances. This reduces
wear and possible noise. If the axial play is too high, it may pose
the risk of insufficient positioning of the hexagon in the hole,which leads to wear and noise.
The maximum play is already taken into account during the
manufacture of the rollers.

The axial play stated is only a guide value. There may be slightdeviations from this figure in individual cases when production
tolerances are added. The function of a correctly installed andused conveyor roller is not being impacted.

Variable shaft length
A deviation of the standard shaft length is possible for all roller
series. The shafts can be shortened or lengthened. The axial
support of a roller via the seal must be ensured at all times. For
some roller series, this requires taking appropriate measures incase of a shaft lengthening.
A length change is possible for the following shaft versions:
·
·
·
·
·

© 12 | 2021 Interroll

Planning basics

Conveyor rollers must not be warped during installation oroperation. This means that play must exist between the seal of theroller and the side profile. The roller must move in axial direction
under load.

The axial play under consideration depends on roller series androller version. For example, an axial play of approx. 1 mm on thedrive side and 0.5 mm on the other side is taken into account fora roller of series 3500 with sprocket head (see figure above).

Rollers | Conveying elements | Accessories

Product

0.5

UGeneral technical information

GENERAL TECHNICAL INFORMATIONSHAFTS

Female threaded shaft
Male threaded shaft
Fixed shaft
Spring-loaded shaft
Flatted shaft

15

GENERAL TECHNICAL INFORMATIONTUBESThe length changes depend on the actual shaft version. Please
direct any questions to your Interroll contact person. Axial
support by the seal may no longer be guaranteed with a lengthchange. With greater axial forces, e.g. where there is lateraldisplacement, suitable replacement structures, such as spacing
tubes, may have to be fitted.

Design versions
Shaft diameter[mm]

Drawing

Longerinstallation
length [mm]

8

+5

10

+4

With female threaded shafts, the shaft can be lengthened only if
the seal is given an axial support. Depending on the thread andshaft diameter, a retaining ring can be inserted. The retaining
ring is secured via a groove incorporated in the shaft. The
combination of a female threaded shaft with flatted shaft also
requires a support of the seal.
In case of a shaft lengthening, the maximum load capacity of theroller is reduced compared to the values that are specified foreach side.

Shaft adapter
The shaft adapter is a conductive polymer component that can bepressed onto roller shafts. It can be inserted in side profiles with
open elongated holes. In this case, the roller is placed from thetop. The shaft adapter significantly reduces the noise levelcompared to the pure steel shaft and increases the installation
length of the roller. The shaft adapter is not an alternative to thetapered shaft-shuttle (page 13).

12

Adapter 11 HEX (hexagon)
Adapter flat shaft 12

The shaft adapter can be used with the following roller series:· Series 1100
· Series 1700
· Series 3500 (for drive heads for belts)

Technical data
Material

Polyoxymethylene, RAL9005 (jetblack)

Temperature range

0 to + 40 °C

Suitable shafts

Fixed round shafts (Ø 8 and
10 mm)

Tube materials/tube diameters

Anti-static version< 106 ΩSteel/stainless steel

Max. static load of a roller withthe use of shaft adapters

See load capacity in thecorresponding table (load capacity
is not reduced by shaft adapter)

The steel tubes used by Interroll are manufactured in accordancewith DIN EN 10305-1, DIN EN 10305-3 and DIN EN 10305-7,
but with stricter tolerance specifications.

Tubes

The roller manufacturing and transport may result in minor
scoring or scratches to appear on the tube surface. However,they do not have any effect on the functionality of the roller.

16© 12 | 2021 Interroll

Versions· With grooves (not for carbonitrided tube)· Covered with PVC or PU sleeve· With lagging· With pushed-on tapered elements· With flanges welded on
When used in belt conveyors, there is noise caused by the paredtube welds coming into contact with the belt. Interroll
recommends testing the relevant application.

PVC
Benefits· Noise-dampening· Highly impact-resistant· Very lightweight· Corrosion-resistant, no surface treatment required· Easy to clean
Polymer tubes have a significantly lower load capacity comparedwith steel and aluminum tubes with the same diameter.
With polymer tubes with a diameter of 30 mm and larger, thebearing assemblies are connected form-fit with the tube so that
an absolutely safe seating is ensured.
An ambient temperature range from −5 to +40 °C applies topolymer tubes. With a high ambient temperature (from 30 °C)
and high continuous static load (over hours), a permanent
deformation of the rollers cannot be ruled out.
When dimensioning the rollers for an existing width between theside profiles (lane width), a thermal expansion must be taken into
account. In case of large temperature differences, the length of
the roller changes based on the following formula:∆LT = 0,08 ∙ L ∙ ∆T
1000

Aluminum
Aluminum tubes have slightly lower strength and only about 33 %of the flexural strength of steel tubes. However, they weigh only
36 % of the weight of comparable steel tubes.
Benefits· Significantly lighter than steel tube
· Corrosion-resistant· Aluminum tubes can be flanged over the bearing assembly sothat the bearing housing can no longer move out
Versions· Covered with PVC or PU sleeve· With pushed-on tapered elements= change in length due to temperature change (mm)= temperature difference (°C)
= tube length (mm)A proper functioning requires that a warping of the roller at hightemperature is being avoided.
Versions· Covered with PVC or PU sleeve

Anodized surface

Anti-static version

20

Yes

No

50

No

Yes

Color

RAL numberØ Tube[mm]

Stone gray7030

16, 20, 30, 40, 50, 63

Graphite gray

7024

20

Sky blue5015

50

Planning basics

Polymer tubes are available in the following colors:Ø Rollers[mm]© 12 | 2021 Interroll

ΔLT
ΔT
L

Rollers | Conveying elements | Accessories

Benefits· Highest resistance and bending stiffness· Steel – corrosion protection through zinc-plating or
carbonitriding· Stainless steel – very good and long-life corrosion protection· Stainless steel – Application also possible in aggressive
environments (not suitable for seawater)· Sprockets and flanges can be welded on (flanges not together
with stainless steel tube)· Steel tubes can be flanged over the bearing assembly so thatthe bearing housing can no longer move out (not for
carbonitrided tube as well as tubes with a wall thickness
greater than 1.5 mm)

General technical information

GENERAL TECHNICAL INFORMATION
TUBES

17

GENERAL TECHNICAL INFORMATIONTUBES

Tube diameter
The following overview lists all available shell diameters and theirwall thicknesses. The respective shell series chapter describes
which diameter is available in which material.

Ø Tube[mm]Wall thicknesses
[mm]

16

1.0

20

1.5

30

1.2; 1.840

1.5; 2.350

1.5; 2.8; 3.0

51

2.0

60

1.5; 2.0; 3.0

63

3.0

80

2.0; 3.089

3.0

Finishing of shell materials
Material

Surface finishing

Steel

Zinc-plating

Steel

Carbonitriding

Aluminum

Anodizing

Properties
Zinc-plated tubes are suitable for flanging and applying grooves.
The galvanized zinc-plating is a temporary protection of the steel
tube against corrosion.
The duration of the corrosion protection is reduced by themechanical and thermal loads to which it is subjected. Particles ofthe zinc layer may be carried off when transporting materials
over zinc-plated steel rollers.
Zinc-plated surfaces are sensitive to scratching and abrasion.
Damage can result in point corrosion.
Extreme changes in temperature must be avoided as they cancause internal tension. Furthermore, corrosion resistance becomes
reduced as the temperature rises.
In order to maintain the limited protective effects of zinc-plating,special packaging must be used for sea freight, for example.
Special measures must also be employed if the materials are to
be stored for a longer period of time. Zinc-plating is not foodcompatible.
A zinc-plated and passivated surfaced reacts with the following
substances:
·
·
·
·
·

Humidity
Acidic environment (exhaust fumes, salts, wood acid etc.)
Alkaline substances (lime, chalk, cleaning agents, CO2)
Perspiration
Solutions of other metals (copper, iron etc.)

Layer thickness

6 to 15 µm

Passivation

Additional blue passivation(chromium(IV)-free)Standards complied withDIN EN ISO 2081
DIN 50961
Zinc-plating according to RoHS
regulations

Temperature range−40 to +200 °C

Antistatic

Yes

Zinc-plating
Galvanized zinc-plating of steel tubes is a cost-efficient corrosion
protection.
Application· For dry application areas with normal temperatures· Conditional suitability for environments with salt and humidity,
e. g. installations in harbor areas or in sub-tropical countries· Conditional suitability in applications with moist or wet
materials
Besides zinc-plated tubes, Interroll also offers zinc-plated shafts
and zinc-plated sprocket heads. Front sides of shafts cannot be
zinc-plated.
Procedure
The surface of the steel tube material is galvanically zinc-plated(using electrolysis). The electrolysis produces an extremely even,thin sleeve. The entire process involves pre-treatment, zincplating, passivating and drying.

18

The long material is zinc-plated. When the tube is sawed off, thefront sides are not zinc-plated.
Carbonitriding
Carbonitriding is a wear-resistant corrosion protection for steel
tubes.

© 12 | 2021 Interroll

Properties
Carbonitrided tubes are partially suitable (up to 1.5 mm wall
thickness) for flanging, but not for the application of grooves.
The ceramic coating is a temporary protection of the steel tube
against corrosion. It is resistant to scratching and chafing.
Mechanical damage can result in point corrosion.
In addition, carbonitriding distinguishes itself with the following
properties:
·
·
·
·
·
·

Abrasion-resistant surfaces
Good sliding properties
Excellent temperature resistance
Low warpage
Free of scales
Good corrosion resistanceThe ceramic coating is not food-compatible. The carbonitrided
surface does not create any abrasion, but can leave color traces
behind.
A carbonitrided surface can react with the following substances:····

Acidic environment (exhaust fumes, salts, wood acid etc.)
Alkaline substances (lime, chalk, cleaning agents, CO2)
Perspiration
Solutions of other metals (copper, iron etc.)

Tube color

Matt, light gray, and scale-free(no grinding necessary/possible)

Min. reference length

100 mmMax. reference length

2000 mm

Temperature range−40 to +80 °C

Antistatic

Yes

Carbonitriding is performed on the tube section that has alreadybeen cut to the correct length. This will also carbonitride the frontsides.

© 12 | 2021 Interroll

Anodizing is a corrosion protection for aluminum tubes.
Application· For weight-sensitive applications, e.g. shuttle systems· For aluminum tubes with 20-mm diameter
Procedure
The surface of the aluminum tube is given an oxidic protective
coating. Compared to galvanizing procedures, the top material
layer is transformed and an oxide is formed.
Properties
The duration of the corrosion protection is reduced by themechanical and thermal loads to which it is subjected. Particles
may be carried off when transporting materials over anodizedrollers.
Anodized surfaces are low-sensitive to scratching and abrasion.
Mechanical damage can result in point corrosion.
An anodized surface can react with solutions of other metals,
such as copper, iron, etc.

Layer thickness≥ 20 µm

Tube color

Aluminum color (natural)Standards complied with

DIN 17611, DIN EN 754/755

Temperature range−40 to +80 °C

Antistatic

No

Rollers | Conveying elements | Accessories

Procedure
Carbonitriding is a thermochemical process. For this purpose, thesurface of the tube is enriched with nitrogen which creates awear-resistant ceramic coating.

Anodizing

The rod material is anodized. When the tube is sawed off, thefront sides are not anodized.
Comparison
The different finishings of steel tube have different resisting forcescompared to mechanical wear. The following table provides afactor that shows the reduction in wear of the tube surface
compared to the steel zinc-plated version.

Material/finishing

FactorZinc-plated steel

1

Stainless steel

5

Steel carbonitrided

120

Planning basics

Application· For highly stressed conveyor rollers, e.g. from the transport ofsteel containers· For applications where materials must be transported axially onrollers

General technical information

GENERAL TECHNICAL INFORMATIONTUBES

A carbonitrided surface is 120 times as resistant as a zinc-plated
surface.

19

GENERAL TECHNICAL INFORMATION
TUBES

Tubes with grooves

The load capacity information in the individual roller series refers
to rollers without grooves.
The maximum load capacity of the conveyor roller is lower withtube lengths of greater than 1400 mm. Interroll recommends a
shaft version that is secured against twisting for round belt drives,
such as a female threaded shaft. Grooves can be applied totubes with a wall thickness of up to 2 mm.
It is possible to apply one to four grooves for each tube. The
dimensions A ands up to D, as needed, must be specified
accordingly at the time of ordering. Version-dependent limitationsof the groove positions are located in the respective chapters of
the roller and RollerDrive series.

Grooves are running grooves that can be placed in steel tubes.
They are used to guide round belts. When using thecorresponding round belt, they are below the roller surface and,as such, do not contact the conveying good.
When the round belt is moved, the conveyor roller also moves.
Two options are differentiated here:· Wrapping from roller to roller· Wrapping of a driven shaft that is positioned below theconveyor rollers. The guide rollers required for guiding theround belts on the drive shaft are located on Series 2600.

A

D
C

B
RL

Grooves reduce the concentric precision and load capacity of
conveyor rollers. Interroll recommends conveyor rollers withround belt drive heads or PolyVee drive heads of the Series
3500 to ensure that concentric precision is adhered to(page 80).

Grooves can be applied for the following roller and RollerDrive
series:Roller or RollerDrive series
Universal conveyor roller

Catalog page
1700

page 58

Universal conveyor roller

1700 heavy

page 72

Tapered universal conveyor roller

1700KXO

page 66

RollerDrive

EC5000–For tapered universal conveyor rollers, the tube must be longer
than the tapered elements. The grooves are applied to this tube
extension.
Please contact your Interroll contact person if grooves need to be
applied to other roller series.
Rollers with grooves always contain an antistatic element.
The maximum conveyor force of the round belt measures 300 N.
The maximum load capacity per conveyor roller with groove
measures 300 N due to the low conveyor force of the round belt.

20

A

min. 8B

Concentric precision
Conveyor rollers and RollerDrive are manufactured from tubes
according to DIN standard. This standard allows deviations inform and straightness, which give rise to the concentric precision.
The concentric deviation is the maximum radial deviation of thediameter of the tube from a perfect circle.
Example: A concentric deviation t = 0.3 mm means that the
maximum radial deviation of the entire tube is 0.3 mm.

© 12 | 2021 Interroll

General technical information

GENERAL TECHNICAL INFORMATIONSTRAIGHTENED ROLLERS / ROLLER LENGTHS

1.5

Concentric deviation [mm]t1.0
Ø 20 mm
Ø 30 mmØ 40 mm
Ø 50 mmØ 63 mm

0.5

0
0

200

400

600

800

Length of conveyor roller [mm]Fig.: Concentric deviation t

The average concentric deviation of Interroll rollers can be foundin the following diagrams.
Steel tubes

Please note that DIN-compliant tubes are permitted significantly
higher concentric tolerances. For this reason, the empiricallydetermined guide values represented in the diagrams can beexceeded in individual cases.

2,0Straightened rollers / roller lengths

1,5

In principle, the rollers manufactured by Interroll have a highconcentric precision. The concentric precision is sufficient foralmost all applications. On top of that, Interroll offers a 100%
inspection for rollers made out of steel.

1,0Ø ≤ 60 mm
0,5

0

0

500

1000

1500

2000

Length of conveyor roller [mm]Polymer tubes
With polymer tubes, the concentric deviation increases
disproportionately to the length of the tube. The following lengths
should not be exceeded:Ø Tube [mm]Max. tube length [mm]

16

300

20

400

30

500

40/50

600

63

800

© 12 | 2021 Interroll

During the inspection, the concentric precision of each roller ismeasured. If the concentric precision falls outside the specified
tolerance (page 20), the tube is straightened. The concentric
deviation is corrected only if it falls outside the tolerance.
When measuring the concentric precision and also for thestraightening process, the tube is the reference point. The
concentricity between shaft and tube is not checked.

Planning basics

Concentric deviation [mm]Ø ≤ 89 mmRollers | Conveying elements | Accessories

For steel tubes ≤ 2 mm wall thickness, Interroll offers a 100%check. In the process, the concentric precision of every roller
ordered is checked and, if needed, the tube is straightened.
Carbonitrided tubes cannot be straightened.

In principle, concentric deviation depends on the length andmaterial of the tube. It is all the greater the longer a tube is,
especially with polymer tubes.

21

GENERAL TECHNICAL INFORMATIONPVC SLEEVE

Technical data
Straightening is possible for tubes with a thickness up to 2 mm
made of uncoated steel, zinc-plated steel, stainless steel,aluminum, and anodized aluminum.
Straightening is possible for the following tubes or tube lengths:

Ø Tube[mm]

Tube wall
thickness[mm]

Min. length[mm]Max. length
[mm]

16

1

300

1000

20

1.5

490

1200

30

1.2

400

1200

40

1.5

600

1700

50

1.5

800

2000

51

2

600

1500

60

1.5

1000

2000

80

2

1500

2000

The installation length can be measured via the total shaft length
only for rollers with female threaded shaft. For all other shaft
designs, the installation length cannot be measured precisely at
the conveyor roller. The axial play of approx. 0.5 mm or at thedriven sides of approx. 1 mm is part of the installation length anddoes not allow an exact measurement of the installation length.
The reference length/ordering length has measurable referenceedges on the conveyor roller for the following series:
·
·
·
·
·
·
·

1100
1700
1700 light (exception: Ø 20 mm)
3500 light
3500
3500 heavy
3800

PVC sleeve

Straightening is possible for rollers with the following features:
·
·
·
·
·

Rollers with grooves
Rollers with flange
Rollers with sleeve or lagging
Rollers with tapered elements
Carbonitrided rollers and PVC rollers

Roller lengths
The Interroll conveyor rollers can be manufactured in different
lengths utilizing millimeter increments. Most versions can be
manufactured starting at a length of approx. 200 mm. The
longest dimension for many series is approx. 2000 mm. The
shortest and longest dimension depends on many factors, such as
shaft design, tube material, production process or packaging
options.

The PVC sleeve ensures a particularly high noise reduction andoffers a high level of protection for sensitive conveying goods. An
improved conveyance of conveying goods is achieved with thehigher coefficient of friction compared with a steel tube.
Conveying goods can easily be separated since the larger
diameter leads to a higher speed with the same rotational speed.

Definitions
RL
EL
AGL
U

= Reference length/ordering length= Installation length, inside diameter between side profiles= Total length of shaft= Usable tube length, length without bearing housing and forflanged metal tube without length of flanging

For conveyor rollers with female threaded shaft, the total shaft
length corresponds to the installation length.

22© 12 | 2021 Interroll

The PVC sleeve is not glued onto the conveyor roller. The
conveyor roller is pushed into the sleeve widened withcompressed air by using a pressing machine. Then the sleeve is
cut to the length of the tube or to the specified dimension.

General technical data
Min. sleeve length

50 mm

Temperature range–28 to +50 °C
Risk of fracture when cold startingat −30 °C

Material
Tube

PVC, zinc-plated steel, stainlesssteel, aluminum

PVC sleeve• RAL7030 (stone gray) or
RAL9005 (black)• Soft PVC, RAL7030 (stone gray)• Silicone-free• RoHS-compliant• REACH-compliant• Not food-safe• Non-conductive• Not oil or gasoline-resistant

Sleeve hardness

62 + 5 Shore A (at 20 °C); thehardness increases at lower
temperatures

Conveyor rollers with welded drive element can also be fittedwith a PVC sleeve. This requires a drive element whose diameter
is not greater than 12 mm of the tube.
Friction rollers (Series 3800, 3800 light, 3870) can be fitted onlywith 2-mm PVC sleeve. Rollers with PVC sleeve are always
designed with an antistatic element. The PVC sleeve is notantistatic.

Dimensions
The PVC sleeve generally covers the entire tube length. It is
possible not to fit sections of the roller with the PVC sleeve, e.g.
the free space for grooves. A minimum length of 50 mm is
required for a firm seating of the sleeve. With existing axial
forces, a greater minimum length must be selected.
When ordering a roller or RollerDrive with sleeve, always specify
the dimensions A to D.
Split PVC sleeve and PolyVee drive head
B

Tapered RollerDrive cannot be fitted with a PVC sleeve.

C

A

D

Design versions
PVC sleeve, stone gray

Sleeve material thickness
[mm]

30

2

5

40

2

5

50

2

5

60

2

5

80

2

PVC sleeve with clean cutsA

D

Planning basics

Ø Tube[mm]

PVC sleeve, blackØ Tube[mm]

Sleeve material thickness
[mm]

50

2

© 12 | 2021 Interroll

Rollers | Conveying elements | Accessories

Technical data

General technical information

GENERAL TECHNICAL INFORMATIONPVC SLEEVE

23

GENERAL TECHNICAL INFORMATIONPU SLEEVE

Technical data

PVC sleeve and 2 grooves

Tapered rollers cannot be fitted with a PU sleeve.
A

D
General technical data
Min. sleeve length

50 mm

Temperature range–28 to +80 °C

Material

PU sleeve

The PU sleeve ensures a high level of noise reduction, particularly
for steel containers, and offers a high level of protection ofsensitive conveying goods. An improved conveyance of
conveying goods is achieved with the higher coefficient of friction
compared with a steel tube. Conveying goods can easily beseparated since the larger diameter leads to a higher speed withthe same rotational speed. With mechanical stress, e.g. withabrasion, it offers a higher robustness than a PVC sleeve.

Tube

Zinc-plated steel, stainless steel,aluminum

PU sleeve• Polyurethane, RAL9005 (jetblack), gloss• Softener-free• Silicone and halogen-free• FDA-compliant• RoHS-compliant• Non-conductive• Oil or gasoline-resistant

Sleeve hardness

75 + 5 Shore A (at 20 °C); thehardness increases at lower
temperatures

Design versions
Ø Tube[mm]

Sleeve material thickness
[mm]

50

2

51

2

With the lower elasticity, the PU sleeve cannot be applied to any
other tube diameters or tubes with welded-on elements.
The PU sleeve is not glued onto the conveyor roller. The conveyor
roller is pushed into the sleeve widened with compressed air byusing a pressing machine. Then the sleeve is cut to the length of
the tube or to the specified dimension. Rollers with PU sleeve arealways designed with an antistatic element. The PU sleeve is notantistatic.

24© 12 | 2021 Interroll

Technical data

The PU sleeve generally covers the entire tube length. It is
possible not to fit sections of the roller with the PU sleeve, e.g. thefree space for grooves. A minimum length of 50 mm is required
for a firm seating of the sleeve. With existing axial forces, agreater minimum length must be selected.
When ordering a roller with sleeve, always specify the dimensions
A to D.

General technical data
Max. reference length of theroller1350 mm

Temperature range–30 to +80 °C

Material
Tube• Uncoated steel• Stainless steel

Black lagging

•
•
•
•
•
•
•
•
•

Nitrile rubber
Silicone- and halogen-free
Good resistance to alkalis
RoHS-compliant
Not FDA-compliant
Not antistaticOil, grease or gasoline-resistant
Not resistant to aromatics
Hardness 65 ± 5 Shore A

White or blue lagging

•
•
•
•
•
•
•
•
•

Nitrile rubber
Silicone- and halogen-free
Good resistance to alkalis
RoHS-compliant
FDA-compliant
Not antistaticOil, grease or gasoline-resistant
Not resistant to aromatics
Hardness 70 ± 5 Shore A

Split PU sleeve and PolyVee drive head
B
A

C
D

Lagging

Rollers | Conveying elements | Accessories

Dimensions

General technical information

GENERAL TECHNICAL INFORMATIONLAGGING

Tapered RollerDrive cannot be fitted with a lagging.

© 12 | 2021 Interroll

Planning basics

The lagging ensures a high level of noise reduction and offers ahigh protection of medium-heavy to heavy conveying goods. An
improved conveyance of conveying goods is achieved with thehigher coefficient of friction compared with a steel tube.
Conveying goods can easily be separated since the larger
diameter leads to a higher speed with the same rotational speed.
The lagging offers a high robustness under mechanical stress andis very abrasion-proof. Compared to sleeves, that are notconnected to the tube, axial forces are also allowed.

25

GENERAL TECHNICAL INFORMATIONLAGGING

Design versions

Dimensions

For tube diameters 40, 50, 51, 60, 80 and 89, a lagging of 2 to
5 mm thickness in increments of 0.1 mm is possible.

Stainless steel tube with 2 grooves and split lagging

RollerseriesØ Tube[mm]

Bearing housingof drive side/nondrive side

Min. distance oflagging to left/right reference
length
[mm]

1450

80

Flanged/Flanged

15/15

1450

89

Flanged/Flanged

15/15

1700

40

Flanged/Flanged

16/16

1700

50

Flanged/Flanged

16/16

1700

50

Cylindrical/
Cylindrical

6/6

C

B
A

D

Uncoated steel tube with 1/2" polymer double sprocket
head with 14 teeth and lagging
A

1700

51

Flanged/Flanged

16/16

1700

51

Cylindrical/
Cylindrical

6/6

1700

60

Flanged/Flanged

16/16

1700

80

Flanged/Flanged

16/16

1700 heavy

50

Flanged/Flanged

16/16

1700 heavy

51

Flanged/Flanged

16/16

1700 heavy

60

Flanged/Flanged

16/16

3500

40

Cylindrical/Flanged

0/16

3500

50

Flanged/Flanged

21/21

3500

50

Cylindrical/Flanged

6/16

3500

50

Cylindrical/
Cylindrical

6/6

RollerDrive

50

Cylindrical/Flanged

6/21

RollerDrive

50

Cylindrical/
Cylindrical

6/6

DThe lagging is applied through hot vulcanization and reground.
This creates a high-strength joint of the lagging with the tube,
resulting in a surface that is highly resistant to abrasion and very
precise. For uncoated steel material, projecting tube sections areprotected against corrosion with a black paint coating. For
welded drive heads, the tube and drive head remain untreated.
Friction rollers (Series 3800, 3800 light, 3870) can be fitted onlywith 2-mm lagging.

26© 12 | 2021 Interroll

General technical information

GENERAL TECHNICAL INFORMATIONFLANGESThe following roller series can be delivered with flanges:

Flanges

·
·
·
·
·
·
·

1200
1450
1700
1700 heavy
3500
3500 heavy
3950

Dimensions
When ordering a roller with flange, always specify thedimensions A to D.
FlangeRollers | Conveying elements | AccessoriessTechnical datad1

d2

Flanges guide materials and prevent their lateral wandering.
Circumferential welds ensure a high stability.

The number of flanges and the roller pitch has to be selected insuch a way that at least two flanges always guide the material at
any given time.

Max. reference length

1600 mmMaterial

Zinc-plated steel, uncoated steelbAMax. number of flanges/rollers

4

Temperature range

Depending on roller series

Fig.: Left flangesØ Flange, outsided2[mm]Flange material
thicknesss[mm]Flange width
b
[mm]

50

75

3

8.5

60

100

3

8.5

80

150

4

18.0

89

150

4

18.0

d2

d1

Ø Tube[mm]

Planning basics

Design versionsbD
Fig.: Right flange© 12 | 2021 Interroll

27

GENERAL TECHNICAL INFORMATIONANTISTATIC ELEMENT

Series 1450, 1700 and 1700 heavy with 2 flanges

Series 3500

d1
[mm]

d2
[mm]

s
[mm]

b
[mm]

Amin
[mm]

Dmin
[mm]

d1
[mm]

d2
[mm]

s
[mm]

b
[mm]

Amin
[mm]

Dmin
[mm]

50

75

3

8.5

23

23

50

75

3

8.5

20

23

60

100

3

8.5

23

23

60

100

3

8.5

20

23

80/89

150

4

18

25

25

Series 3500 heavy
d1
[mm]

d2
[mm]

s
[mm]

b
[mm]

Amin
[mm]

Dmin
[mm]

60

100

3

8.5

20

23

d1

d2

s

Antistatic elementb
A

D

Series 3950 with 2 flanges

The antistatic element creates a permanent electrical connection
between the metal tube and the shaft of the roller. If the side
profile is grounded accordingly and an electrical connection isestablished between the shaft of the roller and the side profile, nostatic charge is created on the metal tube surface.
The antistatic element can be applied for the following tube
materials or tube finishings:

d1
[mm]

d2
[mm]

s
[mm]

b
[mm]

Amin
[mm]

Dmin
[mm]

80/89

150

4

18

23

25

Material

Surface finishing

Steel

None

Steel

Zinc-plating

Steel

Carbonitriding

Stainless steel

None

Aluminum

None (no anodic oxide layer)

d1

d2

s

b
A

D

Series 1200
d1
[mm]

d2
[mm]

s
[mm]

b
[mm]

Amin
[mm]

Dmin
[mm]

50

75

3

8.5

23

23

60

100

3

8.5

23

23

28

By default, the antistatic element is applied for all conveyor
rollers with integrated groove, all polymer-based drive heads,
tube sleeves, and tapered elements and can be selected as an
option for the following roller series:
·
·
·
·
·
·
·
·
·
·

Series 1100
Series 1450
Series 1700 light
Series 1700
Series 1700KXO
Series 1700 heavy
Series 3500
Series 3500KXO light
Series 3500KXO
Series 3950

© 12 | 2021 Interroll

The antistatic element is available for the following roller
diameters:
·
·
·
·
·
·
·

20 mm
30 mm
40 mm
50 mm
60 mm
80 mm
89 mm

·
·
·
·

Series 1500
Series 1700
Series 1700 heavy
Series 3500

Rollers with noise reduction are fitted with a foam inner tube. The
foam is pressed into the tube during the production process of theroller. The noise reduction is also possible for rollers with grooves.

General technical information

GENERAL TECHNICAL INFORMATIONTUBES WITH NOISE REDUCTION

Rollers | Conveying elements | Accessories

Interroll recommends to ensure the electrical connection of theroller shaft to the side profile and to check the grounding
potential on the roller surface before and after the use of theroller. Threaded shafts are best suited to establish a reliable
electrical connection.

Tubes with noise reduction
Benefits· High noise reduction, particularly with steel containers· Reduces the frequency level and resonance when the rollers hit
the end stop

Min. reference length forattenuation

250 mmMax. reference length forattenuation*2000 mmØ Tube50 mm

Temperature range−28 to +80 °C

Tube Materials

Uncoated steel, zinc-plated steel,stainless steel, aluminum

Planning basics

Technical data

* The insulating material is inserted in the tube with a maximum length of
1,000 mm. This length is sufficient for noise reduction.

Design versions
The following series can be equipped with noise reduction:· Series 1100
· Series 1200

© 12 | 2021 Interroll

29