No.
: SE-20018-2
Issued on : Aug. 31 2023

Instruction Manual
Pearl Rotary JointRX Series
This instruction manual applies to products with type designations
that begin with RXE, RXH, or RXK.

This instruction manual describes important precautions for preventing
accidents and how to handle the product. To ensure safe use, be sure toread this manual and fully understand its contents before using this product.
Store this manual carefully so that it can be referred to at any time.

Pearl is a trade name of Showa Giken Industrial Co., Ltd.

1

Table of Contents
1. How to Read Nameplate (Nameplate Information) …………………………………………… P3
2. For Safety ……………………………………………………………………………………… P32‐1）Symbols …………………………………………………………………………………… P3
2‐2）For safe use ………………………………………………………………………………… P3
3. Product Overview ……………………………………………………………………………… P43‐1）Application ……………………………………………………………………………………P43‐2）Information indicated by model names …………………………………………………… P43‐3）Service conditions ………………………………………………………………………… P5
3‐4）Precautions for use ………………………………………………………………………… P5
3‐5）Product structures and materials ………………………………………………………… P6
3‐6）Product dimensions ………………………………………………………………………… P7
3‐7）Product masses …………………………………………………………………………… P73‐8）Accessories ………………………………………………………………………………… P8
4. Transport and Storage ……………………………………………………………………………P94‐1）Transport …………………………………………………………………………………… P94‐2）Storage ……………………………………………………………………………………… P9
5. Installation to Machinery …………………………………………………………………………P95‐1）Internal pipe (for duplex only) ……………………………………………………………… P95‐2）Installing to a roll …………………………………………………………………………… P10
5‐3）Pipe laying …………………………………………………………………………………… P115‐4）Measures for preventing rotation ……………………………………………………………P12
6. Removal from Machinery …………………………………………………………………………P12
7. Operation ………………………………………………………………………………………… P13
7‐1）Operation …………………………………………………………………………………… P13
7‐2）Operation shutdown ………………………………………………………………………… P13
8. Inspection and Maintenance …………………………………………………………………… P148‐1）Daily inspection ……………………………………………………………………………… P14
8‐2）Greasing ………………………………………………………………………………………P148‐3）Repair and replacement of consumables ……………………………………………………P15
9. Troubleshooting ………………………………………………………………………………… P16
10. Disposal ………………………………………………………………………………………… P17
11. Product Warranty ……………………………………………………………………………… P17

A. Appendix - How to Repair or Replace Consumables ………………………………………… P19
A‐1）For simplex (RXE1***, RXE21**, RXH1***, RXH21**) ………………………………… P20
A‐2）For duplex, stationary IP (RXE3***, RXE41**, RXH3***, RXH41**) …………………… P22
A‐3）For duplex, rotational IP (RXE5***, RXE61**, RXH5***, RXH61**) …………………… P24
A‐4）For RXK (RXK6081, RXK6082) …………………………………………………………… P26

2

1. How to Read Nameplate (Nameplate Information)
Ｍｏｄｅｌ Ｎａｍｅ

Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｎｏ．

Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｄａｔｅ

The nameplate attached to the product indicates the model name, manufacturing
number, and manufacturing date.

2. For Safety2‐1) Symbols
The symbols used in this instruction manual are described below.

WARNING

Indicates that failure to follow the warning message may cause bodily
accidents that may result in serious or even fatal injury.

CAUTION

Indicates that failure to follow the caution message may cause
personal injury or damage to peripheral equipment.

Instruction

Indicates that failure to follow the instruction message may cause
reduced product lifetime, product damage, or early leakage.
Indicates “prohibited actions”.

2‐2) For safe use
1. Transport, storage, installation, piping, operation, or maintenance of this product should be
carried out by an experienced expert.
2. Be sure to observe all warnings, cautions, and instructions described in each section.
3.
Never disassemble or modify this product because doing so is dangerous. We shall assume
no responsibility for any malfunctions, accidents, or the results thereof involving areassembled product after disassembly or a modified product. Also, a reassembled product after
disassembly or a modified product shall not be covered by the product warranty even if thewarranty period is still valid. This also applies to repairs done by yourself.
4. Confirm specifications (dimensions, materials, masses) indicated on individual product drawings
before staring work. Contact our sales representative for requests for product drawings.
5. Always use the latest instruction manual. You can download the latest version from our website.

33. Product Overview
3‐1) Application
A rotary joint is used for supplying fluid to or draining it from a machine rotating part called aroll, drum or cylinder, via fixed pipes.

3‐2) Information indicated by model names
Information indicated by RX series model names is described below.
The product list is shown in our catalog or on our website.

Note 1） RXE/RXH is available for up to 80A.
2） Only two types, RXK6081 for 90A and RXK6082 for 100A, are available for RXK.
3） “␣” indicates a space. A model name is indicated without spaces.
4） If two codes are selected, they are indicated in alphabetical order.
5） The selection of three or more options resulting in a long model name is indicated as“RXS****” to denote a customized product for administrative reasons.
(The asterisks (****) indicate a four-digit number allocated to each model.)If you have any questions, contact our sales representative.

43‐3) Service conditions
Service Conditions of RX Series
Series

RX

Line

Fluid

RXE

Water / Oil

RXH

Water / Thermal Oil

RXK

Water / Oil

8A～25A
32A, 40A
50A～80A
10A～25A
32A, 40A
50A～80A

Pressure
(MPa)
2.25
1.67
1.18
2.25
1.67
1.18

90A, 100A

0.98

Size

Max.
Rotation speed Temperature(℃)(min -1)
3,500
100
2,000
750
3,500
150
2,000
750
500

100

3‐4) Precautions for use
Use this product by following the warnings, cautions, and instructions described below.

WARNINGCAUTION

Instruction

1. If flammable fluids leak and ignite, bodily accidents including serious oreven fatal injury, or accidents that damage peripheral equipment may
occur due to explosion or fire. Depending on the type of fluid, thisproduct may subject to restrictions due to national laws or local
regulations.
2.
This product cannot be used for food-processing machinery.
Doing so may lead to adverse health effects.

This product cannot be used for steam applications.
Otherwise, steam leakage may result, causing burns.

1. Perform operation within the service conditions.
2.
Do not operate under conditions where both pressure and rotation speed
are close to the max. values. Doing so significantly reduces productlifetime.
3.
This product cannot be used in temperature conditions where the productambient temperature exceeds the upper limit of the service
conditions.
4.
The product cannot be used for liquid containing solid particles (slurry)or pulverulent body. The product cannot be used for fluid that causes
corrosion on it.
5.
This product cannot be used for operation with no rotation, intermittent
rotation, or low-rotation speed (a few rotations per minute).
Otherwise, fluid leakage may occur.
6. If the product is used in a high-rotation speed range, select a product installedwith a parallel thread or a flange instead of a taper thread.

53‐5) Product structures and materials

RXE

Materials of Main Components(Standard Specification)
Part Name
Rotor
CasingSeal Ring
O-ringRXH

Materials of Main Components(Standard Specification)
Part Name
Rotor
CasingSeal Ring
O-ringRXKMaterial
Stainless Steel(Seal face : Ceramic)
Copper Alloy
CarbonNBRMaterial
Stainless Steel(Seal Face : Ceramic)
Copper Alloy
CarbonFKM

Materials of Main Components(Standard Specification)
Part Name
Rotor
Casing
Head
Seal Ring
O-ring

材料
Carbon Steel(Seal Face : Ceramic)
Cast Iron
Cast Iron
CarbonNBRThe rotor and head are finishedwith electroless nickel plating.
Heat-resistant paint is applied toexternal parts.

Note ) Component materials are indicated on product drawings.
Contact our sales representative for requests for product drawings.

63‐6) Product dimensions
Product dimensions are shown on product drawings, in our catalog, or on our website.

3‐7) Product masses
Masses of RXE/RXH (Standard Specification)
Code
1***
21**
3***/5***41**/61**

8A
0.35
-

10A
0.60
-

15A
0.9
1.1
1.0
1.2

20A
1.3
1.7
1.4
1.8

25A
1.8
2.1
2.0
2.3

(kg)
32A
2.7
3.5
3.1
3.9

40A
3.4
4.0
3.7
4.3

Masses of RXE/RXH （Stainless Steel Specification）
Code
10**S
21**S
30**S
41**S

8A
0.45
-

Masses of RXK
Code
6081
6082

90A
25
-

10A
0.80
-

15A
1.2
1.4
1.3
1.5

20A
1.8
2.2
1.9
2.3

25A
2.5
2.8
2.7
3.0

32A
4.7
5.4
4.0
4.8

50A
6.5
7.4
6.7
7.6

65A
8.7
9.9
9.6
10.8

80A
12.0
13.6
11.6
13.2

(kg)
40A
5.0
5.7
4.7
5.3

50A
11.5
12.5
-

(kg)
100A
35

7

3‐8) Accessories
1. A product installed with a parallel thread is supplied with a gasket (copper plate).
Accessories
Parallel Thread Connection with Spigot

Accessories
Parallel Thread Connection without Spigot (mm)
Line

Size

10A

15A

20A
RXE
RXH
25A

32A

40A

A
G3/8
M16×1.5
5/8-18UNF
G1/2
M22×1.5
3/4-16UNF
G3/4
M26×1.5
1-14UNS
G1
M35×1.5
1 1/2 -12UNF
G1 1/4
M42×1.5
1 3/4 -12UN
G1 1/2
M50×1.5
2-12UN

GasketOuter Inner ThickDia. Dia.
ness
26
17
2
23

16.3

2

30
27.5
27.5

21.3
22.2
19.5

2
2
2

35

26.8

2

39.5
42
44

33.5
35.3
38.5

2
2
2

49

42.5

2

52
56

45
48.3

2
2

58

51

2

Line

Size

A

RXE
RXH

10A
15A
20A
25A

M16×1.5
M22×1.5
M25×1.5
M33×1.5

Ｗｉｔｈｏｕｔ Ｓｐｉｇｏｔ
ＧａｓｋｅｔＡ(mm)

GasketOuter Inner ThickDia. Dia.
ness
24
18.5
2
27.5 22.2
2
29.5 25.2
2
39.5 33.5
2

Ｗｉｔｈ Ｓｐｉｇｏｔ
ＧａｓｋｅｔＷｉｔｈ Ｓｐｉｇｏｔ １０Ａ
Ａ

ＧａｓｋｅｔＭ１６×１．５ＬｂａＫ

2. A product installed with a flange is supplied with a gasket(copper jacket) and four sets of a stud bolt (SS400), a hex. nut(SS400), and a spring washer (SWRH) for up to 80A, or six sets
thereof for 90A and 100A.
*The gasket material for RXK is copper plate.
*The gasket material for products with stainless steel
specifications (21**S or 41**S) is PTFE.
Accessories（Flange Connection）
Line

RXE
RXH

RXK

Size
15A
20A
25A
32A
40A
50A
65A
80A
90A
100A

Gasket (Copper Jacket)
Outer
Inner
ThickDia.
Dia.
ness
24
16
3.2
29
20
3.2
34
26
3.2

Ｇａｓｋｅｔ(mm)

Gasket (PTFE)
Stud Bolt
SpringOuter Inner ThickHex. NutK
L a b
Washer
Dia.
Dia.
ness
24
13.5
2
M8 36 11 18 M8 type1 M8 No.2
29.5
20
2
M10 45 15 20 M10 type1 M10 No.2
34
25
2

49

37

3.2

49

37

2

64
79
89
99
119

50
62
74
82
100

3.2
3.2
3.2
3
3

64
-

50
-

2
-

M10 48 15 20 M10 type1 M10 No.2

M12 58 18 27 M12 type1 M12 No.2
M16 69 24 28 M16 type1 M16 No.2

3. A duplex, stationary IP product is supplied with a lock nut (right-hand thread) used for securing
the internal pipe. The material for the standard specification is copper alloy for 15A to 25A, or
SS400 for 32A to 80A. The material for the stainless steel specification is SUS304.

8

4. Transport and Storage4‐1) Transport
Transport this product by following the cautions and instructions described below.

CAUTIONTo transport a product that weighs over 25 kg, use appropriate lifting
equipment to prevent injuries.

Instruction

1. Do not subject the product to undue impact while it is being transported.
Falling down or impact causes product damage (grease nipple, seal ring, etc.)
or early leakage. If the product fell down or was damaged, contact us formaintenance.
2. When transporting a product with an internal pipe, do not secure the productso that the load is directly applied to the internal pipe. Doing so may bend theinternal pipe, hindering installation to a roll. Moreover, abnormal noise or earlyleakage may result after installation.

4‐2) Storage
An improper storage method causes product damage or early leakage.
Store this product by following the instructions described below.

Instruction

1. Wrap the product before storing it to prevent the entry of foreign objects.
2. Store this product in a dry environment at 10℃ to 40℃.
3. The storage period should be within two years. If the storage period exceeds
two years, contact us for maintenance.
4. If the product is stored after use, clean and then store it under the above
conditions.

5. Installation to Machinery
Product adjustment is not required before installation.
5‐1) Internal pipe (for duplex only)
Install an internal pipe to the product according to the following instructions.

Instruction

1. When inserting an internal pipe into the product rotor, be careful so that thepipe does not hit inner parts. Failure to do so could cause inner part damage,resulting in fluid leakage.
2. When installing an internal pipe to the product, be careful not to bend the pipe.
If it is bent, product installation to a roll may be hindered. Also, vibration orabnormal noise after installation, or early leakage may result.

●Duplex, stationary IP (RXE3***, RXE41**, RXH3***, RXH41**）
Screw the G thread (right-hand thread) of an internal pipe into the casing, and then secure itwith a supplied lock nut.
●Duplex, rotational IP (RXE5***, RXE61**, RXH5***, RXH61**, RXK60**)
Insert an internal pipe into the bearing for internal pipe in the product.

95‐2) Installing to a roll
Install the product by following the warnings, cautions, and instructions described below.

WARNINGBe sure to install the product so that an inspection hole faces downward.
Also, do not block the hole. This hole is used for detecting leakage at an
early stage. If this hole is directed toward other directions or is blocked,
leakage cannot be detected at an early stage. Moreover, leaked fluid may
accumulate in a casing and ball bearings may be damaged, causing serious
bodily accidents due to resulting rotation failure.

CAUTION

In order to prevent injuries, take the product weight into consideration
before installing the product. Use equipment such as a crane as necessary.
This work should be performed by two or more persons.

Instruction

1. Remove any foreign objects in such flow passages as a pipe or a roll before
product installation. If the fluid contains foreign objects, install a strainer at
the flow passages. Foreign objects cause early leakage.
2. If the product is installed with its center misaligned or tilted, vibration orabnormal noise may result. Moreover, the product or machine equipment may
be damaged due to vibration.
3. When tightening screws or nuts, properly torque-tighten them according to thescrew type or size.
4. To prevent uneven tightening, evenly tighten flange screws in a cross pattern.
5. Perform retightening after the start of use.
6.
To prevent internal pipe damage, do not hook a webbing sling to aninternal pipe. Hook a webbing sling to a casing. For RXK lines, therotation stopper hole can be used for suspension.

●Installation: taper thread
1. Wrap seal tape around the taper thread of the rotor.
2. Use the shank on the rotor to screw the product into a roll.
●Installation: parallel thread
1. Install the supplied gasket to the rotor.
2. Use the shank on the rotor to screw the product into a roll.
●Installation: thread with spigot
1. Install the supplied gasket to the rotor.
2. Use the shank on the rotor to screw the product while inserting the rotor spigot into a roll socket.
●Installation: flange
1. Install the supplied stud bolts to a roll.
2. Install the supplied gasket to a roll socket.
3. Insert the rotor spigot into the roll socket while checking that the stud bolts go through the rotor
flange holes.
4. Set the supplied spring washers on the stud bolts, and then secure the product with the suppliednuts.
The flange of RXK is detachable. Install it to the rotor together with a split ring in advance.

105‐3) Pipe laying
Perform pipe laying work by following the warnings and instructions described below.

WARNING

Use a hose for product connection suitable for characteristics of fluid used
and operating conditions (pressure, temperature). If an unsuitable hose isused, it may be damaged, causing injury to workers or damage to peripheral
equipment.

Observe the following instructions to prevent the generation of force applied tothe sides of the product, possibly causing product damage or early leakage.
1. Use a flexible metal tube or rubber hose with adequate flexibility.

Instruction

2.

Steel pipes should not be used for pipe laying.

3.

Avoid such pipe laying where heavy items such as valves are suspended
from the product.

4. When installing a flexible metal tube, slightly bend it in the rotation direction ofroll. (See the bottom left figure.)
5. Carry out pipe laying work so that excessive “tension”, “compression”,“torsion”, or “bending” is not applied to a flexible metal tube. In particular,“torsion” may significantly reduce the lifetime of the flexible metal tube.
(See the bottom right figure.)
6. Use the following table as a guideline for the flexible metal tube length.

Rotation Direction of Roll

Flexible
Metal Tube
Slightly bend the tube
in the rotation direction.

TensionCompression

OK

TorsionBending

Unacceptable(mm)

Flexible Metal Tube Length (Guideline)
Size

8A～20A

25A

32A/40A

50A

Length300～400

400～500

600～800

900～1000

65A

80A

1200～1300 1500～1600

115‐4) Measures for preventing rotation●RXE line, RXH line
As torque of both lines is low, a measure for preventing casing rotation is not required in manycases. As an option, an anti-rotation component is available. Contact our sales representative
if you need a measure for preventing rotation.
●RXK line
A measure for preventing casing rotation is required. Take a measure according to the following
instructions.
Do not secure the rotation stopper to an anti-rotation plate or a round bar.
Doing so can apply a load to the product, causing product damage or earlyleakage.

Instruction

Example of a measure using a round bar（The periphery of a round bar that comes in contact with the rotation stopper must be smooth.）Ｒｏｕｎｄ Ｂａｒ

Ｃｌｅａｒａｎｃｅ
Ｒｏｕｎｄ Ｂａｒ

Ｒｏｔａｔｉｏｎ Ｓｔｏｐｐｅｒ

Ｒｏｔａｔｉｏｎ Ｄｉｒｅｃｔｉｏｎ ｏｆ Ｒｏｌｌ

6. Removal from Machinery
Remove the product by following the warnings, cautions, and instructions described
below in reverse order of the installation.

WARNING

In order to prevent bodily accidents due to residual fluid in the product orpipes, remove the product after fluid has been completely drained from theproduct or pipes and temperature has dropped to room temperature.

CAUTIION

In order to prevent injuries, take the product weight into consideration
before removing the product. Use equipment such as a crane as necessary.
This work should be performed by two or more persons.

Instruction

To prevent internal pipe damage, do not hook a webbing sling to an internal
pipe. Hook a webbing sling to a casing. For RXK lines, the rotation stopper
hole can be used for suspension.

127. Operation
7‐1) Operation
Perform operation by following the warnings, cautions, and instructions described below.

WARNING

Immediately stop operation if fluid leakage is detected during operation.
If operation is continued with fluid leakage not being repaired, serious
accidents including bodily accidents may result.

During rotation or high-temperature/pressure fluid flow, keep wellaway from the product to prevent injuries or burns. Do not directly
touch rotating or hot parts during operation.

CAUTION

Instruction

1. When starting operation, check for abnormal rotation (center runout, abnormal
noise, etc.) or fluid leakage from the product while gradually increasing fluidpressure and roll rotational velocity.
2. If operation is continued under a center runout condition, product damage or
fluid leakage may result.
3. The occurrence of surging or water hammer can cause product damage or fluid
leakage. Avoid such occurrence.
4.
Do not perform dry operation (operation without fluid flow) for a long time.
The product lifetime becomes shortened.

7‐2) Operation shutdown
Follow the following instructions during operation shutdown.

Instruction

1. If the product is left as is for a long time during operation shutdown, rust may
occur, causing fluid leakage after operation restart. Clean flow passages for the
product, pipes, and roll before restarting operation.
2. If water is used as the fluid, take a measure to prevent water from freezing in
the product. Freezing may cause product damage, resulting in fluid leakage
after operation restart.
3.
Do not put your hand on or ride on the product during equipment
maintenance. Doing so may cause product damage or fluid leakage after
operation restart.

13

8. Inspection and Maintenance8‐1) Daily inspection
Perform inspection according to the following instructions.

Instruction

1. Visually check pipe connections, product connections, and the product for fluid
leakage. If leakage is detected, repair the product or replace it with a new one.
2. When replacing, use the same type of product with the same size.

8‐2) Greasing●RXE line （Except for RXE****G）As grease-sealed ball bearings are used, greasing is not required.
●RXH line, RXK line, RXE****G
Periodic greasing (refilling) of ball bearings is required.
Carry out greasing according to the following instructions.

Instruction

1. Remove the grease outlet plug and fill the grease through the grease nipple(grease inlet). Continue to fill until new grease comes out from the grease
outlet.
2. If the grease is filled without removing the plug, parts inside the product may
be damaged by the grease pressure, causing fluid leakage.
3.
Use the same grease as the one filled in the product before shipment.
Do not use grease mixed with other ones. Doing so may reduce thelubricating effect.
4. Carry out greasing with reference to the frequency and amount (guideline)
shown in the following table. Failure to carry out greasing can reduce thelubricating performance of the grease, causing the reduction in the ball bearing
lifetime.

< Grease filled in the product before shipment >Daphne Eponex SR2 (Idemitsu Kosan) is filled in the RX series.
Greasing Frequency(Guideline)
Fuid Temperature
Greasing（℃）
Frequency
0～60
Every six months
60～120Every three months
120～150
Monthly

Grease Amount（Guideline）
Size
10A
15A
20A
25A
32A
40A
50A
65A
80A
90A
100A

(cm3)

First Time
Refill5
2.5～3.06
3.0～3.511
5.5～6.514
7.0～8.0
21
11～13
26
13～16
47
24～28
98
49～59
143
72～86
200
100～120350
175～210148‐3) Repair and replacement of consumables
The ball bearings and the seal face of the seal ring become worn over the course of operation time.
O-rings also deteriorate. Moreover, if the internal pipe rotates in the product, bearings that support
the pipe also become worn. Then such malfunctions as fluid leakage may occur. However, the productcan be reused by repairing or replacing worn or deteriorated parts.
Contact us for repair or parts replacement. We carry it out according to our repair program.
Depending on the products, expenses for purchasing new products may be lower than repair expenses.
Consult with us when requesting repair or replacement.
< When carrying out repair or replacement of consumables by yourself >・ Repair or replacement should be carried out by an experienced expert.
・ Perform work according to “A. Appendix - How to Repair or Replace Consumables".
・ Use our genuine parts as replacement parts.
Contact our sales representative to request genuine parts.

・ Properly dispose of waste resulting from work according to national laws or local government
regulations or ordinances.

(Attention)
If you carry out repair or replacement, we shall assume no responsibility for any productmalfunctions, equipment malfunctions or accidents resulting from such product or the results
thereof. Also, the product shall not be covered by the product warranty even if the warranty
period is still valid.

15

9. TroubleshootingThis section describes the possible causes of and countermeasures against malfunctions.
If a problem persists, contact our sales representative for assistance.
Malfunctions

Fluid is leaking from theinspection hole.

CausesCountermeasures

A load is applied to the product due to an improper
method of pipe laying.

Review the pipe laying method.

The seal ring is damaged.
The seal ring lifetime has been reached.
The rotor seal face is damaged.

Contact us for repair.

The fluid contains foreign objects.

Clean the inside of the product, pipes, androll. Install a strainer.

The O-ring adheres to the casing.

Contact us for repair.

A load is applied to the product due to impropercountermeasures for preventing rotation.

Review the countermeasure forpreventing rotation.

Operation is performed without rotation, or operationoccasionally ceases during the operation cycle.

Consult with us.

Operation is performed at low-rotation speed (a few
rotations per minute).

Consult with us.

Improper product selection.

Consult with us.

The rotation axes of a roll and the product are
misaligned with each other.
<Flange connection type>The shaft end socket of a roll is offset from the rollrotation axis.
<Thread connection type><Flange connection type>Repair the spigot /socket.
<Thread connection type>The shaft end screw hole of a roll is offset from the rollRepair the screw hole.
rotation axis.
The product has center
runout. (It is vibrating.)

Noise occurs.

The rotation axes of a roll and the product are inclined
from each other.

-<Flange connection type><Flange connection type>The shaft end socket of a roll is offset from the rollrotation axis.

Repair the installation face on the roll side
to which the product is installed.

Uneven tightening of fixing screws.

Evenly tighten the fixing screws.

<Thread connection type><Thread connection type>

The center lines of screw holes for fixing the productare inclined from the roll rotation axis.

Repair the screw hole.

The product is screwed in diagonally.
The internal pipe bends and comes in contact with theinner perimeter of the product rotor or that of the roll
shaft.
The internal pipe bent by its weight comes in contact
with the inner perimeter of the product rotor or that of
the roll shaft.
A load is applied to the product due to an improper
method of pipe laying.

Reinstall the product.

Ball bearings are damaged.

Contact us for repair.

A sliding sound is heard from the seal face.

No fault is indicated.

Straighten the bent internal pipe.

Consult with us.
Review the pipe laying method.

The rotor does not rotate. A ball bearing does not rotate.

Contact us for repair.

Oil is leaking from a ballbearing.

No fault is indicated.

Oil released from the grease seeps.

1610. Disposal
When disposing of packaging materials or products, properly dispose of them according tonational laws or local government regulations or ordinances.

11. Product Warranty
If a malfunction occurs during the warranty period, contact us or the distributor and send the
product to us. Be sure to carefully pack the product for protection before sending it.
After receiving the product, we will confirm the malfunction. If the malfunction was clearly causedby the materials of product components or the manufacturing method, we will repair the productin question or replace it with a new one free of charge.

Product Warranty Provision
1. Warranty period<New products>
One (1) year and six (6) months after shipment (from the manufacturing date) or one (1) year
after installation, whichever comes first.
<Repaired products>
Six (6) months after shipment (from the manufacturing date).
2. We charge a fee for repairs in any of the following cases.
①Failure after the warranty period has expired②Failure caused by use of the product deviating from the service conditions③Failure caused by misuse(improper storage, installation, pipe laying, operation or maintenance, etc.)④Failure caused by fluid contaminants or foreign objects in the fluid⑤Failure caused by relocation, transport, or falling of the product after delivery⑥Failure caused by disassembly, repair, or modification done by personnel other than our service
personnel⑦Failure of the product attributed to using materials or according to standards specified by thecustomer⑧Failure of the product attributed to using materials provided by the customer⑨Failure caused due to unavoidable acts of nature such as fires or other natural disasters
3. Scope of responsibility
Our responsibility shall be limited to repairs, replacements, or transport expenses covered by thisproduct warranty provision. Expenses or damages caused by said failures above shall not becovered.
4. Applicable regions
This product warranty provision shall be applicable to products installed in Japan.
Contact our sales representative if you install and use our products outside Japan.
5. Another agreement
If another product warranty agreement is made separately with us and clearly states that said
agreement shall have priority over this product warranty provision, this provision shall not beapplicable.
6. This product warranty provision shall not restrict the customer's legal rights.

17

URL https://www.sgk-p.co.jp
Export Department

Phone : +81-3-3598-1400 Fax. : +81-3-3598-2700
E-mail : sgk-tk@sgk-p.co.jp
Headquarters
7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan
Phone : +81-48-728-9460 Fax. : +81-48-728-9461
Tokyo Sales Office
2-64-11, Akabane, Kita-ku, Tokyo, 115-0045 Japan
Phone : +81-3-3598-1400 Fax. : +81-3-3598-2700
Osaka Sales Office
2-9-7, Toyosaki, Kita-ku, Osaka, 531-0072 Japan
Phone : +81-6-6371-8341 Fax. +81-6-6371-6283
Nagoya Sales Office 41-1, Higashi-Ozone-cho, Higashi-ku, Nagoya, 461-0022 Japan
Phone : +81-52-938-8825 Fax. : +81-52-938-6423

18

A. Appendix - How to Repair or Replace Consumables

19A‐1) For simplex （RXE1***, RXE21**, RXH1***, RXH21**)
An explanation is given below with reference to RXH10** (see the left figure).
＊Although the 20A or 25A flange type (RXE2120, RXE2125, RXH2120, RXH2125) has tworetaining rings ⑧ on the rotor (see the right figure), the same workflow is applied.
１１ １０ ９３

４

８Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ２ １２ ６

１３

５

７

１

Ｇｒｅａｓｅ Ｏｕｔｌｅｔ

６

８

５

１

２０Ａ ２５Ａ Ｆｌａｎｇｅ Ｔｙｐｅ

①Rotor ②Casing ③Seal Ring ④Spring Pin ⑤Ball Bearing⑥Spacer ⑦Retaining Ring ⑧Retaining Ring ⑨O-ring ⑩Washer⑪Spring ⑫Grease Nipple ⑬Plug (Set Screw)< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.

1) Disconnect all pipes, etc. connected to the product.
2） Remove grease nipple ⑫ and plug (set screw) ⑬.
3) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
4) Remove retaining ring ⑦.
5) Pull out the assembly consisting of rotor ①, ball bearings ⑤, spacer ⑥, and retaining ring ⑧(hereinafter called the rotor assembly) from casing ②.
6) Remove seal ring ③, O-ring ⑨, washer ⑩, and spring ⑪ from casing ②.
7） Remove retaining rings ⑧ from rotor ①, and then pull out ball bearings ⑤ and spacer ⑥.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 20
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑨ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.
1) Apply grease to O-ring ⑨ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
3) Install spring ⑪, washer ⑩, O-ring ⑨, and seal ring ③ to casing ② in order. At this point,align the notch of seal ring ③ with spring pin ④ before installing the seal ring.
4) Insert ball bearing ⑤, spacer ⑥, and ball bearing ⑤ to rotor ① in order, and then installretaining rings ⑧. At this point, be sure to confirm that the direction of the ball bearings iscorrect.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Install retaining ring ⑦ to casing ②.
7) Check that rotor ① smoothly rotates.
8) 【 For RXH1***, RXH21**, RXE1***G and RXE21**G only 】
Install grease nipple ⑫ and fill the grease through it. Continue to fill until new grease comesout from the grease outlet. After greasing, attach plug (set screw) ⑬.

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)21A‐2) For duplex, stationary IP (RXE3***, RXE41**, RXH3**, RXH41**)
An explanation is given below with reference to RXH30** (see the left figure).
＊Although the 20A or 25A flange type (RXE4120, RXE4125, RXH4120, RXH4125) has tworetaining rings ⑧ on the rotor (see the right figure), the same workflow is applied.
１３ １２ １１ １０ ９

３

４

８

２ １４ ６

５

７

１

８

６

５

１

Ｉｎｔｅｒｎａｌ Ｐｉｐｅ
Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ

１５

Ｇｒｅａｓｅ Ｏｕｔｌｅｔ

２０Ａ ２５Ａ Ｆｌａｎｇｅ Ｔｙｐｅ

①Rotor ②Casing ③Seal Ring ④Spring Pin ⑤Ball Bearing⑥Spacer ⑦Retaining Ring ⑧Retaining Ring ⑨O-ring ⑩Washer⑪Spring ⑫Lock Nut ⑬Elbow ⑭Grease Nipple ⑮Plug (Set Screw)< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.
1) Disconnect all pipes, etc. connected to the product.
2) Remove grease nipple ⑭ and plug (set screw) ⑮.
3) Remove elbow ⑬ from casing ②.
4) Remove lock nut ⑫ and the internal pipe.
5) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
6) Remove retaining ring ⑦.
7) Pull out the assembly consisting of rotor ①, ball bearings ⑤, spacer ⑥, and retaining ring ⑧(hereinafter called the rotor assembly) from casing ②.
8) Remove seal ring ③, O-ring ⑨, washer ⑩, and spring ⑪ from casing ②.
9) Remove retaining rings ⑧ from rotor ①, and then pull out ball bearings ⑤ and spacer ⑥.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 22
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑨ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.
1) Apply grease to O-ring ⑨ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
3) Install spring ⑪, washer ⑩, O-ring ⑨, and seal ring ③ to casing ② in order. At this point,align the notch of seal ring ③ with spring pin ④ before installing the seal ring.
4) Insert ball bearing ⑤, spacer ⑥, and ball bearing ⑤ to rotor ① in order, and then installretaining rings ⑧. At this point, be sure to confirm that the direction of the ball bearings iscorrect.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Install retaining ring ⑦ to casing ②.
7) Check that rotor ① smoothly rotates.
8) 【 For RXH3***, RXH41**, RXE3***G and RXE41**G only 】
Install grease nipple ⑭ and fill the grease through it. Continue to fill until new grease comesout from the grease outlet. After greasing, attach plug (set screw) ⑮.
9) Screw the internal pipe into the product and secure it with lock nut ⑫.
10) Wrap seal tape around the taper thread of casing ②, and then install elbow ⑬.

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)23A‐3) For duplex, rotational IP (RXE5***, RXE61**, RXH5***, RXH61**)
An explanation is given below with reference to RXH50** (see the left figure).
＊Although the 20A or 25A flange type (RXE6120, RXE6125, RXH6120, RXH6125) has tworetaining rings ⑧ on the rotor (see the right figure), the same workflow is applied.
＊For 80A, ⑫ indicates a Teflon liner.
１３ １２ １１ １０ ９

３

４

８

２ １４ ６

５

７

１

８

６

５

１

Ｉｎｔｅｒｎａｌ Ｐｉｐｅ
Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ

１５

Ｇｒｅａｓｅ Ｏｕｔｌｅｔ

２０Ａ ２５Ａ Ｆｌａｎｇｅ Ｔｙｐｅ

①Rotor ②Casing ③Seal Ring ④Spring Pin ⑤Ball Bearing⑥Spacer ⑦Retaining Ring ⑧Retaining Ring ⑨O-ring ⑩Washer⑪Spring ⑫Bush ⑬Elbow ⑭Grease Nipple ⑮Plug (Set Screw)< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.

1) Disconnect all pipes, etc. connected to the product.
2) Remove grease nipple ⑭ and plug (set screw) ⑮.
3) Remove elbow ⑬ from casing ②.
4) Pull out the internal pipe.
5) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
6) Remove retaining ring ⑦.
7) Pull out the assembly consisting of rotor ①, ball bearings ⑤, spacer ⑥, and retaining ring ⑧(hereinafter called the rotor assembly) from casing ②.
8) Remove seal ring ③, O-ring ⑨, washer ⑩, and spring ⑪ from casing ②.
9) Remove retaining rings ⑧ from rotor ①, and then pull out ball bearings ⑤ and spacer ⑥.
（＊）For a product type whose internal pipe is secured to a roll, the internal pipe comes offfrom the product when the product is removed from the roll. Therefore, steps 3) and 4)
are not required.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 24
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③, and check the damage condition of Bush ⑫.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑨ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.
1) Apply grease to O-ring ⑨ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
3) Install spring ⑪, washer ⑩, O-ring ⑨, and seal ring ③ to casing ② in order. At this point,align the notch of seal ring ③ with spring pin ④ before installing the seal ring.
4) Insert ball bearing ⑤, spacer ⑥, and ball bearing ⑤ to rotor ① in order, and then installretaining rings ⑧. At this point, be sure to confirm that the direction of the ball bearings iscorrect.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Install retaining ring ⑦ to casing ②.
7) Check that rotor ① smoothly rotates.
8) 【 For RXH5***, RXH61**, RXE5***G and RXE61**G only 】
Install grease nipple ⑭ and fill the grease through it. Continue to fill until new grease comesout from the grease outlet. After greasing, attach plug (set screw) ⑮.
9) Insert the internal pipe into the product.
10) Wrap seal tape around the taper thread of casing ②, and then install elbow ⑬.
（＊）For a product type whose internal pipe is secured to a roll, install the internal pipe to aroll and then install the product to the roll. After installing the product to the roll, perform
steps 9) and 10).

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)25A‐4) For RXK (RXK6081, RXK6082)
An explanation is given below with reference to RXK6081 (figure shown below).
The same workflow is applied to RXK6082.
１３ １２

１１ １０ ９

８

４

３

１７ １６

Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ

５ １４

１５

６

２

７

１

１８ １９

Ｉｎｔｅｒｎａｌ Ｐｉｐｅ
Ｇｒｅａｓｅ Ｏｕｔｌｅｔ①Rotor ②Casing ③Head ④Seal Ring ⑤Ball Bearing⑥Spacer ⑦Retaining Ring ⑧O-ring ⑨Washer ⑩Spring⑪Spring Guide ⑫Teflon liner ⑬Elbow ⑭Grease Nipple ⑮Square Head Plug
⑯Hex. Bolt ⑰Spring Washer ⑱Rotor Flange ⑲Sprit Ring

< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.
1) Disconnect all pipes, etc. connected to the product.
2) Remove grease nipple ⑭ and square head plug ⑮.
3) Move rotor flange ⑱ to the casing ② side and remove split ring ⑲. Then pull out rotor flange ⑱
from rotor ①.
4) Remove elbow ⑬ from head ③.
5) Pull out the internal pipe.
6) Clamp head ③ with a vice, etc. so that rotor ① faces upward.
7) Unscrew hex. bolt ⑯ and remove the assembly consisting of rotor ①, ball bearings ⑤, spacer ⑥,
and retaining ring ⑦ (hereinafter called the rotor assembly) together with casing ②.
8) Remove seal ring ④, O-ring ⑧, washer ⑨, and spring ⑩ from head ③.
9) Remove the rotor assembly from casing ②.
10） Remove retaining rings ⑦ from rotor ①, and then pull out ball bearings ⑤ and spacer ⑥.
（＊）For a product type whose internal pipe is secured to a roll, the internal pipe comes offfrom the product when the product is removed from the roll. Therefore, steps 4) and 5)
are not required.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 26
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ④, and check the damage condition of Teflon liner ⑫.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑨ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.

1) Apply grease to O-ring ⑧ and the inner perimeter of head ③ with which the O-ring comes incontact.
2) Clamp head ③ with a vice, etc. so that the rotor side faces upward.
3) Put spring ⑩ through spring guide ⑪, and then install washer ⑨, O-ring ⑧, and seal ring ④ tohead ③ in order. At this point, install so that the pin of seal ring ④ fits into the groove onhead ③.
4) Insert ball bearing ⑤, spacer ⑥, and ball bearing ⑤ to rotor ① in order, and then installretaining rings ⑦. At this point, be sure to confirm that the direction of the ball bearings iscorrect.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Use hex. bolt ⑯ and spring washer ⑰ to secure casing ② to head ③.
7) Check that rotor ① smoothly rotates.
8) Insert rotor flange ⑱ into rotor ① and install split ring ⑲. Then move rotor flange ⑱ to thesplit ring ⑲ side.
9) Install grease nipple ⑭ and fill the grease through it. Continue to fill until new grease comesout from the grease outlet. After greasing, attach square head plug ⑮.
10) Insert the internal pipe into the product.
11) Wrap seal tape around the taper thread of head ③, and then install elbow ⑬.
（＊） For a product type whose internal pipe is secured to a roll, install the internal pipe to aroll and then install the product to the roll. After installing the product to the roll, perform
steps 9) and 10).

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)27