PSTPICO SYNCHRO

PICO SYNCHRO

PICO SYNCHROR

PST Series

INDEX★
Overview ････････････････････････････････････････････782
Explanation, Example of Use, Installation Method ･･･783
Operating Principle, Stopping Accuracy of Driven Table ･･･784
Stroke Adjustment Mechanism, About Stroke ･･････785
Model Code No. ･････････････････････････････････････786
Speciﬁcations, Guide to be used, Eﬀective Trust of Table, Product Mass ･･787
Spare Parts Code ･･･････････････････････････････････788
Structure and Principal Components････････････････789
Positioning Pin Hole, Main Body / Load Instllation Method･･･790
Note for Usage ･･･････････････････････････････792, 793
To use as a Gripper ･･･････････････････････････794, 795
Allowable Load Mass, Allowable Load, Allowable Moment･･･796, 797
Outside Dimensions ･･････････････････････････798〜801
Switch Installation, Custom Made･･･････････････････802

PICO SYNCHRO

Accuracy････････････････････････････････････････････791

PST
781

PICO SYNCHROPST Series（φ6）

A new idea, Thin Type High Accurate Air Gripper
which is with Two Synchronously Moving Tables
Arranged in Parallel.
Running Parallelism 0.005㎜ Mounting Parallelism 0.03㎜
Linear GuideHigh Accuracy, High Rigidity
Linear Guide is built-in.
As tables or escapes······Compactness, high-precision, high-rigidity and synchronized movement(table stroke: 5mm and 10 mm)
As air chucks······Compactness, high-precision, high-rigidity and large open-close stroke(10mm and 20 mm)

Positioning Pin HolePin holes for attaching/ detaching
reproducibility are provided on top
surface of the table and bottom
surface of guide rail

Table for Work

Stroke Adjuster

Work can be directly
mounted on the table top
and side surfaces.

Metal and rubber stoppers
are available.
Stroke at the both ends ofguide table is adjustablewithin one plane.

Linear Guide
Corrosion
Resistance

High-precision. high-rigidity linear
guide of limited Unear movement
type

Stainless steel, withsuperior corrosion
resistance is adopted
for the linear guide4-Points Contact

PICO SYNCHRO

4-point contact guide. which wellendures variable load andcombined load, is adopted for the
linear guide.

PST
782

One-Side
Concentrated
PipingSwitch8 types of switches
can be mounted.

Countermeasure for Copper Parts
Copper parts are not used.

PST

PICO SYNCHRO

Summary of The PICO SYNCHRO
PICO SYNCHRO has been developed as a series of small high-accuracy air chucks capable ofrealizing the high accuracy and high rigidity of linear guides by integrating air cylinders in two
small linear guides provided in parallel and operating in synchronization.
This innovative product solves problems with conventional air chucks such as insuﬃcientrigidity, long overall length and longitudinal dimension, short opening/closing stroke andnon-adjustability of the opening/closing stroke.
It has excellent features including high accuracy and high rigidity, compact and thin unit andlarge opening/closing stroke. For stroke adjustment, two means have been made optionallyavailable: metal stopper and rubber stopper.
The ports are concentrated on one side, providing a neat appearance.
The structure with linear guide tables provided in parallel operating in synchronization allows
the product to be used for a wide variety of applications such as escape and transport table.

As an Escapement

Chucking of Small Parts

Chucking of Electronic component

Chucking in a narrow place■MAIN BODY INSTALLATION（Bolt as shown in the ﬁgure are not supplied with products）

Top Mounting(Body Tap)

Top Mounting(by Means of LB ﬁxture)■MOUNTING（Bolt as shown in the ﬁgure are not supplied with products）

Top Mounting

PICO SYNCHRO■Application Examples : PICO SYNCHRO

PST
783

OPERATING PRINCIPLE
When a pressure is applied to the port of Pica Synchro, table of the pressurized side (driving table) starts move.
At the same time, the other table which is not pressurized (driven table) moves in the direction opposite todriving table. When the driving table stops, driven table also stops.
Adjusting Bolt

Driving Table

Pressurization

Side Plate

Driven Table
Pressurization from the Port

When the driving table starts tomove, the driven table moves in the
opposite direction.

When the driving table stops at thestroke end, the driven table stops
as well.

When the driving table moves. a pin pushes U-shaped groove on the cam disk to rotate the cam disk, making thedriven table move in the opposite direction synchronously.

Driving Table

Driven Table

Pressurization
Piston Rod
Pin

U-shaped groove

Cam Disk
Movement of both tables aresynchronized by pins and a cam disk.

When the port at one side is pressurized.
the driving table starts to move, making
the pin move at thesame time. The pin
makes the cam disk rotate to move thedriven pin in the opposite direction.
This, in turn, makes driven table move.

When the driving table is stopped by
the side plate (or adjusting bolt), thedriven table stops, too.

PICO SYNCHROSTOPPING ACCURACY OF DRIVEN TABLE
Pico Synchro is so constructed that the movement of both tables are synchronized by the pins and the cam
disk. When this device is used in the manner where the pressurized (driving) tabte is stopped by being pressedagainst the side plate or adjusting bolt, the driven table is also stopped. As clearance is provided at pins, pinholes of tables and U-shaped grooves on the cam disk. there exists a slight play in the stroke direction. This play
is approximately ±0.3mm.

●When used as a table or an escape
In designing a system, care should be taken to the playshown above.

Driving Table

PST●When used as an air chuck
If a work is held by pressing it, the tables are stopped by
the contact with the work without generating any play.
In such cases as to hook a work where the table is stopped bybeing pressed against the side plate or adjusting bolt,
a play will be generated at the driven table.

784

ay

Pl

Pressurization

Driven Table

PST

PICO SYNCHROSTROKE ADJUSTMENT MECHANISM

B

A

5

A

B

A

B

A

Doesn t move
any more（

But there isa play5

7

7

As Pico Synchro has a structure in which two tables are synchronized, if the stroke of the table on one side isadjusted, the stroke of the other table is also determined.
For example, when the stroke of the table A is set to 7mm and the table A is stopped by the stopper, table B is
also stopped after a movement of 7 mm and doesn't move any more. As the table B works as the driven table inthis case, a slight play will be generated in the stroke direction.
When the stroke of the table B is set to 5mm. the stroke of table A also becomes 5mm. As the table A works as
the driven table in this case, a short play will be generated in the stroke direction.
As to play of stroke
Page 784 (Stopping accuracy of driven table)

Doesn t move
any more）（

But there isa play）Pressurization
Stroke of the table A is
set to 7mm.

B

Pressurization

Stroke of the table B also
becomes 7 mm.

Sets stroke of the table B
is set to 5mm.

Stroke of the table B also
becomes 5 mm.

When stroke is adjusted. also consider the position of the table not adjusted.
Necessary amount of stroke diﬀers among applications. See page 787.

ABOUT STROKE
Necessary amount of Meaning of stroke to Pico Synchro is diﬀers among applications.

●When used as a table or an escapeThe stroke indicated in the model number of product (5mm or 10mm) is the maximum
travel of the table.

●When used as an air chuck

Double the stroke indicated in the model number of product (10mm or 20mm) is
the open-close stroke to hold a work.

Avalable Stroke
PST−SD6−5

PST−SD6−10

When used as a table or an escape510

When used as an air chuck

10

20

Ex: When PST−SD6−10 is used as an air chuck.

3㎜
en： ：13
e
os
Cl

Op
0㎜

e1

rok

St

0㎜

e1

rok

St

PST

When the maximum distance at opened claws is 33mm andthe minimum distance at closed claws is 13 mm, thenopen-close stroke is 20mm.

3㎜

PICO SYNCHRO

Application

785

Custom Made
Grease Converted Product802 Page

PICO TABLE Standard TypePPT Series
39 Page

Model Code Example

PSTS−SD6−10−QR−RD−RB1 2 LA

Series Name●No Code●Cable Length

Stroke●Magnet and Switch Rail●
None

5

5（＊1）

No Code1ｍ

10

10（＊2）

LA

3ｍ

Use with stroke adjuster
mechanism for intermediatestroke.
for an air chuck application.

●Number of Switches＊1：Open-close stroke is
10mm＊2：Open-close stroke is
20mm

S

Magnet and Switch RailFor details

Page 785

No CodeRB1●Bore Size

RC1

φ6

RB2
RC2
RB4

Switch RailA magnet and switch rail isrequired when mounting switches.

RC4
RB5
RC5

Mounting
SD

1

2

2

SwitchMagnet

6

1

None
With
DC12〜24V
Indicator
2 Wires
Angle
Reed Switch Light
Straight DC12〜24V Without
Indicator
2 Wires
Angle
Reed Switch LightWith
DC12〜24V
Straight
2 Wires Solid Indicator
Angle
State Switch Light
With
Straight DC5〜24V
3 Wires Solid Indicator
Angle
State Switch Light
Straight

Direction of Cable Outlet

Basic

RB････
Straight Outlet Cable

RC････
Angle Outlet Cable

For details

Page 1066, 1067

●Location of Magnet and Switch Rail
LB

With Bracket

No Code Right Side of the PortRD

Left Side of the Port

PICO SYNCHRO

Port

PST
786

Port

BracketStroke Adjustment Mechanism●
No CodeWithout Stroke Adjustment

QR

Metal Stopper

Adjustment･･･5㎜

QT

Rubber Stopper

Adjustment･･･5㎜

PST

PICO SYNCHRO

SPECIFICATIONS
φ6㎜

Bore Size
Maximum
Load Mass

Without Stroke Adjustment

0.1 kgWith Rubber Stopper

0.1 kg0.15kgWith Shock AbsorberPort Size

M3×0.5

Guide Mechanism

Linear Guide

Type of Operation

Double Acting

Fluid

Air

Maximum Operating Pressure

0.7 MPa

Minimum Operating Pressure

0.3 MPa

Proof Pressure

1.05MPa

Operating Temperature

5〜60℃

Maximum Operating Speed

120c.p.m

Lubrication

Not required●Stroke and Adjustable Stroke Range

Pico Synchro is an actuator with two synchronously moving tables arranged in parallel.
On page 785. stroke and adjustable stroke mean the ones of each table.
Stroke and adjustable stroke. according to the application are as follows.

Application

PST−SD6−5

PST−SD6−10

Table, Escapement

5㎜

10㎜

5㎜

Air Chuck

10㎜

20㎜

Open Side 5㎜, Close Side 5㎜

Stroke Adjustment

THE TYPE OF LINEAR GUIDE
Model

Type

PST6

Rail Size 7
Pre-load:Zero or slightly pre-loaded

MASS

PST6

Unit：gStroke

Basic
Mass

5

70

10

75

Mass added for Mass added for model with Stroke Adjuster Mass added formodel withmodel with
Magnet(PSTS) Metal Stopper（QR） Rubber Stopper（QT） Bracket(LB)
8
5
5
27
8

5

Mass of Switch

Unit：ｇType

Mass

RB1, RC1, RB2, RC2

5

METHOD TO CALCULATE THE MASS
Ex. PSTS−LB6−10−QT−RC52LA
Basic Mass ････････････････････････75g
Additional mass with magnet････････8g
Additional mass with bracket ･･････30g
Additional mass with rubber stopper ･･5g
Switch mass ･･･････････････35×2＝70g

15RB4, RC4, RB5, RC5
RB1LA, RC1LA, RB2LA, RC2LA
RB4LA, RC4LA, RB5LA, RC5LA

30

35

PICO SYNCHRO

Model

75＋8＋30＋5＋70＝188g

Bore Size
(㎜)
φ6

Table

Page 794）

Unit： N

Operating Pressure MPa
0.3

0.4

0.5

0.6

0.7

Drive Table

4.9

6.9

8.8

10.8

12.7

Driven Table

2.1

2.7

3.4

4.1

4.8

PST

Eﬀective Thrust of Table （For air chuck application

787

OPTIONAL PARTS CODES
Name

Switch Fixture

Reed Switch（2 Wires, with Indicator Light）

Reed Switch（2 Wires, without Indicator Light）

Straight Outlet Cable Angle Outlet Cable

Straight Outlet Cable Angle Outlet Cable

PARTS CODE

BF（PST）

RB1（PST）

RC1（PST）

RB2（PST）

RC2（PST）

Note

Screw, Nut

Cable Length:1mCable Length:1mCable Length:1mCable Length:1m

PARTS CODE

RB1LA（PST）

RC1LA（PST）

RB2LA（PST）

RC2LA（PST）

Note

Cable Length:3mCable Length:3mCable Length:3mCable Length:3mwith ﬁxture

with ﬁxture

with ﬁxture

with ﬁxture

Content

MagnetSolid State Switch（2 Wires, with Indicator Light）

Solid State Switch（3 Wires, with Indicator Light）

Straight Outlet Cable Angle Outlet Cable

Straight Outlet Cable Angle Outlet Cable

RK（PST）

RB4（PST）

RC4（PST）

RB5（PST）

RC5（PST）

Before mounting, apply
anaerodic adhesive tothe screws.

Cable Length:1mCable Length:1mCable Length:1mCable Length:1mwith mounting screws,
spacer

RB4LA（PST）

RC4LA（PST）

RB5LA（PST）

RC5LA（PST）

Cable Length:3mCable Length:3mCable Length:3mCable Length:3mwith ﬁxture

with ﬁxture

with ﬁxture

with ﬁxture

Repair Parts Set
HP（PST6）

Switch Rail
RJ（PST6−（Stroke））
Example: For 10 stroke
RJ(PST6-10)

For details
Page 789with mounting screws

PICO SYNCHRO

Adjuster Bolt with Lock Nut

Adjuster Bolt

Model

PARTS CODE

Model

M5（M5×0.8）

NTA（M5）

PST6− 5
PST6−10

PST

Common use for Adjust Bolt,
Adjust Bolt with Rubber

788with Lock Nut

PARTS CODE

AJ（M5−16）

Bracket
LB（PST6−（Stroke））
Example: For 10 stroke
RJ(PST6-10)

Adjuster Bolt with Rubber with Lock Nut
Model

PST6− 5
PST6−10PARTS CODE

AR（M5−16）with mounting bolt

PST

PICO SYNCHROSTRUCTURE AND PRINCIPAL COMPONENTS

With Rubber StopperWith Metal Stopper, with Bracket

Name

Material

1

Guide Table

Stainless Steel (Heat Treatment)

2

Guide Table

3

Ball

4
5

Remarks

Name

Material

Remarks

11

Circlip

Steel

Nickel Plating

Stainless Steel (Heat Treatment)

12

Hexagon Socket Bolt

Steel

Nickel Plating

Stainless Steel (Heat Treatment)

13

Hexagon Socket Locking Screw

Steel

Nickel Plating

Guide Rail

Stainless Steel (Heat Treatment)

14

Adjusting Bolt

Steel (Heat Treatment)

Nickel Plating

Side Plate

Aluminum Alloy

Electroless Nickel Plating

15

Adjusting Bolt with Rubber

Stainless Steel
Urethane RubberSide Plate

Steel

Electroless Nickel Plating

16

Cushion Rubber

7

Piston Rod

Aluminum Alloy

Electroless Nickel Plating

17

Lock Nut

Steel

Nickel Plating8

Cam Disk

Stainless Steel (Heat Treatment)

18

Bracket

Aluminum Alloy

Electroless Nickel Plating

9

Pin

Steel (Heat Treatment)

19

Pin

Steel (Heat Treatment)

10

Spring Pin

Steel

20

Hexagon Socket Bolt

Steel

Nickel Plating

Name

Material

Qty

23

Stopper Ring for Shaft

Steel

2

REPAIR PARTS
Name

Material

Qty

21

Piston Seal

NBR

2

22

Wear Ring

Synthetic Resin

2

Remarks

Remarks

PST

6

PICO SYNCHRO

PRINCIPAL COMPONENTS

789

BODY INSTALLATION
Mounting by Bracket (Thru Hole)

L

H

L

H

Bottom Mounting(Body Tap)

φD
φD

Model

Bolt Size

PST6

M3×0.5Screw Depth Fastening Torque Pin Holes for Positioning
L(mm)
N･m
φD×H(mm)31.1

φ3＋0.05
depth30ModelBolt Size

PST6

M3×0.5

Thru Hole Length Fastening Torque Pin Holes for Positioning
L(mm)
N･m
φD×H(mm)2.8

1.1

φ3＋0.05
depth30

MOUNTING ON TABLE
Top Mounting

Side Mounting

φD

PICO SYNCHRO

PST
790

L

L

H

L

Model

Bolt Size

PST6

M3×0.5Screw Depth Fastening Torque Pin Holes for Positioning
L(mm)
N･m
φD×H(mm)31.1

φ3＋0.05
depth2.50ModelBolt Size

PST6

M3×0.5Screw Depth Fastening Torque
N･m
L(mm)
3

1.1

Note: The surface can not be used in case ofwith Magnet and Switch Rail.

PST

PICO SYNCHRO

Accuracy■Bearing Accuracy

E

H

F

I

C

Port

K

J

D

G
B

A

Unit：㎜

Parallelism

Plane C and D with respect to Plane A

PST6
0.03

Plane E and F with respect to Plane B

0.03

Running Plane C and D with respect to Plane A
Parallelism Plane E and F with respect to Plane B

0.005

Level diﬀerence between surface C and D

0.02

Tolerance of Dimension G

0−0.1

Tolerance of Dimension H0−0.1

Tolerance of Dimension I

0
−0.1

0.005

Tolerance of Dimension J±0.05

Tolerance of Dimension K±0.05

PICO SYNCHRO

Model

PST
791

PRECAUTIONS FOR DESIGN AND USE
Warning
Breakdown in Power Supply and Abnormal Condition in Supply Pressure
If supply pressure goes up/ down abnormally by abreakdown of power supply such as electricity or airpressure, thrust power of actuator also changes
corresponding to that and malfunction may occur.
Take measures against this situation not to damage
human or devices.

Thrust Power
By the structure of Pico Synchro. eﬀective thrust is
diﬀerent between pressurized table (driving table ) andnot pressurized table (driven table ). Take note this fact
when this device is used as a table or an escape.
Eﬀective thrustPage 787

Gripping Power
When the device is used as an air-chuck, allow
enough margin of safety for eﬀective holding power.
Eﬀective holding power
Page 794

Gripping Point
When the device is used as an air-chuck, in case limit
range of holding point is exceeded, moment load acted ona guide table becomes larger, it may cause a breakdown.

Reliable Gripping
When the device is used as an air-chuck, hold a work at theplace near the center of mass with stability. A work shallbe hold at the middle of open-close stroke as possible.

Attachment
When the device is used as an air-chuck, if attachment
to hold a work is long and large or heavy, an inertial
force at open-close action and moment load generated
at a guide table become larger, which may have adeleterious eﬀect on performance.

PICO SYNCHRO

StrokePSTWhen the device is used as an air -chuck, design shallbe made considering work dimension and variations inholding position. If there is little margin of safety,
mal-holding or fall of a work may occur. If a switch isused, consider responding diﬀerence for the
open-close stroke. Non-contact type switch with ashort working range is recommended for a shortstroke operation. Set a stroke to act as longer as
possible. If a stroke isset shorter, guide table andsliding surface of cylinder lack enough lubrication,
which may cause malfunction. If operating stroke
can't be set enough longer, operate it regularly with along stroke to maintain enough lubrication.

792

Speed Adjustment of Guide Table
When the device is used as an air -chuck, if impulsive force
at holding a work is large, moment generated at guide tablebecomes larger to bring about breakdown or damage ofwork. Hold a work as softly as possible using a speed
controller, etc. At test run, operate the device at low speed
manually or make the supply pressure small verifying that
impulse is not exerted on the guide table.

Removal of an Actuator
If an actuator is removed from the device in the case of
modiﬁcation or maintenance, check that it doesn't hold a work,
cut oﬀ supply of compressed air and exhaust residual pressure.

At operation
When actuator is moving or power supply is not cut oﬀ, if
the moving part of the device or the actuator is touched byﬁngers, hands or tools, it may cause injury or accident.

Setting of a Cover
Water, oil, cutting ﬂuid, dust. iron powder, spatter, etc aredeposited on sliding part or linear guide part of the guidetable, damage or rust of bearing and packing, etc, may
occur to cause leakage of air or mal-function. Set a cover on
the part to prevent the deposition.

Mounting, Adjustment
When a part is mounted on the guide table, bear the partwith a wrench, etc, to prevent applying load and impulse to
the guide table. When Pico Synchro is used as an
air-chuck, set up a clearance in order not to apply load andimpulse to the guide table by the crash of work or
attachment at ﬁnger open-close or stroke end of transfer.

Dimensional Restrictions on Joints and Speed Controllers
The distance from the table top side to the port is 4.5 mm.
Accordingly, if the part mounted on the table top side may
come above the joint or speed controller, provide a recess
for avoiding contact. Use of the following joints eliminates
the need for providing a recess.
Recommended one-touch joints
NITTA････････AC4−M3A−M
NIHON PISCO･････POC4−M3M

Rolling Feel in Linear Guide
When the table is moved by hand, rolling of balls inside thelinear guide may cause slight feel of operation discontinuity
or diﬀerence in the rolling resistance between products. Thisis due to preload of the linear guide and does not aﬀect theperformance.

Positioning Pin Holes in Table and Rail
Press-ﬁtting a pin into a positioning pin hole may cause failure
due to deformation of the rolling surface of the linear guide orexcessive load applied during press-ﬁtting. The pin hole ishardened by heat treatment and crack or damage may occur.
Ensure that the ﬁt allows for a clearance between the hole andthe pin (clearance ﬁt: tolerance class position g max.).

PST

PICO SYNCHRO

CautionMoment due to Cylinder Thrust in case of Oﬀset Contact
When a loaded work contacts the objective at theoﬀset point from thebearing in the middle of stroke. alarge moment will be generated due tothe thrust by
the cylinder itself. Static rated moment
Page 797.

Pitching moment

Yawning Moment

Cylinder Thrust

Cylinder ThrustCenter of Contact

Center of Contact

MomentL

L

Moment②Datum plane of the guide rail and guide table.

Page 791③If the corner of the surface to which the guide rail or guidetable is to be installd has a larger roundness than theguide rail or guide table chanter dimensions, they may notcome in proper contact with the mating surface.
Design the dimensional contour as shown below.
Ａ

R0.2 or lessA section
R0.2 or lessB
B section④If the guide rail or guide table installation surface
and its mating surface have improper squareness.
proper contact can not be gotton. Care should betaken to the angle error of the squareness.
θ°A section

θ°

Rigidity of Mounting Base (ﬁxed portion)
Since the accuracy of a machinery as a whole varies
with the rigidity of the component parts even if thesame actuator equipped, be sure to design amachinery in full consideration of the regidity of thecomponent parts such as mounting base and table.

OilingLubricant is enclosed in the linear guide in advance but theperformance will be deteriorated by a long operating time,
operating conditions, environment, etc. Using without
lubrication may accelerate wear of the rolling part or cause
earlier end of the service life. The timing of regreasing
depends on the operating conditions and environment. As arule, regrease at intervals of travel of 100 km or one month.
After wiping the old grease oﬀ, supply lithium soap-based
grease to the bearing rolling surface of the guide rail.
Supplying a diﬀerent type of grease may cause malfunction
or failure due to lubrication performance degradation or
chemical change. Turbine oil can be applied or drop-fed foruse. Do not use spindle oil or machine oil because they
adversely aﬀect the packing.
Area to apply grease

PICO SYNCHRO

Accuracy of Mounting Surface①The performance of the Pico Table will be seriously
aﬀected by the accuracy of the mating mounting surface
and the datum mounting surface. Accordingly it isnecessary to consider the machining accuracy of themouning surface. (The recommended ﬂatness shall be
0.05mm or less.)

B section

Magnetization of Table and RailMartensite stainless steel, as material of table andbody, must be magnetized easily by contacting
magnet and magnetic thing. Once that steel ismagnetized, it keeps this state.
Note that there is a possibility that the switch might
not work correctly by this magnetization.

PST⑤When designing the mating surface. its height and thickness
should be carefully determined. If it is too high, it may
interfere with the guide table. If too low. on the contraty,
proper mating cannot be provided due to the chanter of theguide rail or guide table. If the thickness is not enough,proper accuracy may not be obtained due to insuﬃcientrigidity when lateral load is given or insuﬃcient rigidity of themating surface when positioning with a cross feed bolt.

793

FOR AN AIR-CHUCK APPLICATION■Eﬀective Gripping Force in Close Direction
Caution●Model Selection for Mass of Work

Gripping Force N

4
0.7MPa3

0.6MPa0.5MPa2

0.4MPa10.3MPa

0

10

20

30

40

PICO SYNCHRO

Gripping Point

PST
794

50

L（㎜）

60

Mass of work to be hold shall be 5-10% of eﬀective
holding power depending on material, shape andsurface condition of work and attachment. In thecase large acceleration or impulse is exerted withhigh speed movement made by robot when work ishold, suﬃcient margin of safety shall be provided ingripping force.

PST

PICO SYNCHRO■Range of Gripping Point
Warning●Attachment

40

Distance of gripping point L and amount of overhang
H, which indicate work holding point of attachment
shall be within the range shown in the diagram. If it
exceeds the range, too large moment will be applied
to guide section and may shorten life by backlash
generated in guide section.
Even if it is within the limit, attachment shall besmall and light as possible. If attachment is long andheavy, it has larger inertial force at open-close,
which aﬀects adversely guide section.

.4

0
a

20

P

M

30

a
P
a
M
P
.5
0 6M Pa.
0 7M.
0Amout of Overhung

50

a
P
M
.3
0

H
（㎜）

60

10

0

10

20

30

40

Gripping Point

50

60

L（㎜）

PICO SYNCHRO

Distance of gripping point L and amount of overhang H ismeasured from center of guide. For dimension of guide
position, see p.796.

PST
795

ALLOWABLE LOAD MASS, ALLOWABLE LOAD AND ALLOWABLE MOMENT
CautionUse this device after verifying that the applied load is within the allowable value.
Any service conditions exceeding the allowable values may aﬀect operation, accuracy and life,and may even result in the breakage.
Type of Load Situation of the Actuator Situation of Load
Loaded Work

OperatingExternal Force Not operating

Items to be conﬁrmed

Continuous Acting

Allowable Load Mass, Allowable Work Moment, Allowable Inertial Mass

Temparary Acting

Basic Static Rated Load, Static Rated Moment■Direction of Moment
The moment directions are classiﬁed into three types in accordance with the mounting conditionof a load to the actuator.

Pitching

YawingRolling

Mp
Pitching

My
YawingW

Mr
Rolling

W
W
F＝9.8×W

F＝9.8×W
F＝9.8×W
Ly

Lp
Unit：ｍModel
PST6Distance between Guide Center Line and Table End Surface
0.00850.0067Lr

W（kg）：Mass of loaded work
F（N）
：Gravitation acting on a loaded work
Lp、Ly、Lr（m）：Distance between guide center line and center of gravity of load
ℓp、
ℓy（m）
：Distance between guide center line and table end surface■Allowable Load Mass, Allowable Loaded Work Moment
When the actuator is operated with a load mounted, conﬁrm that the following two values arerespectivety within the allowable range.

①Allowable Load Mass
PICO SYNCHRO

Model
Maximum Mass of Load

Unit：kg

Standard Type Metal Stopper（QR） Rubber Stopper（QT）
0.1

0.1

0.15

②Allowable Loaded Work Moment

The moment in each direction generated by the gravity acting on aloaded work is calculated by
the formulas below. These calculated values shall not exceed the allowable loaded work moment.

PST(Loaded work moment)=(Gravity acting on a load: F)X(Distance between guide center line
and center of gravity of a loaded work: L)=9.8X(Load mass: W)X(Distance between guide center line andcenter of gravity of a loaded work:L)(Gravity acting on a load: F)=9.8X(Load mass: W)
Pitching: Mp (N·m)=9.8 X W(kg) X Lp(m)Yawing: My (N·m)=9.8 X W(kg) X Ly(m)Rolling: Mr (N·m)=9.8 X W(kg) X Lr(m)796

Allowable Loaded Work Moment
Model
PST6

Unit：N・m

Allowable Moment of Load
Mp

My

Mr

0.29

0.29

0.54

PST

PICO SYNCHRO■Allowable Load and Allowable Moment in case of an External force(When the actuator is stopped)
When an external force is applied temporarily with the actuator stopped at the stroke end andthe like, conﬁrm that the following two values are respectively within the allowable range.

①External Force Value (Basic Static Rated Load)②External Force Moment (Static Rated Moment)
Note: The arm length of a monent shall be obtained as a length from the guide center and the point where
an external force is applied.

When an excessive load or impact is applied with the table stopped. permanent deformation is locallygenerated between the ball and the ball rolling surface. This deformation will prevent the actuator fromsmooth operation when it develops more than the allowable limit. The basic static rated load C0, thestatic rated moment Mp0, My0, and Mr0 mean such a static load and static moment of constantdirection and value that the sum of the permanent deformation values at the ball and ball rolling surface
is 0.0001 of times the ball diameter on the contact surface receiving the maximum stress.
Co≧fs・P

Co：Basic rated static load N
P ：Static load N
fs：Static safety coeﬃcientM p 0≧f s・M p 1
M y 0≧f s・M y 1
M r 0≧f s・M r 1

Mp0、My0、Mr0：Rated static moment N・m
Mp1、My1、Mr1：Static morment N・m
fs ：Static safely coeﬃciente

Static Safety Coeﬃcientfs

Load Conditions

Lower Lmit of fs

In case with a Light Load and no Impact

1.0〜1.3

In case with a Heavy Load and no Impact

2.0〜3.0

Basic Rated Static Load, Rated Static Moment
Model

Stroke（㎜）

N・m

Mp0

My0

Mr0

1040

2.02

2.02

3.79

5

PST6

Rated Static Moment

Basic Rated Static Load C0
N

10

THEORETICAL DISPLACEMENT OF TABLE BY MOMENT
Bearings used for PST are preloaded, but the table incline under external moment because ofelastic deformation of balls and races.

YawingMy

Pitching

Mp

PICO SYNCHRO

0.12

Mp、My

0.10

Mr

0.08
0.06
0.04

Rolling

0.02
0

0.2

0.4

Bending Moment

0.6

0.8

Mr

PST

Theoretical Displacement Angle (deg)PST6−5, −10

N・m

797

DIMENSIONS(mm)PST6−5BASIC

PSTS−SD6−5（−RD）
Bore Size

2−M2.5×0.45depth3（for mounting of Switch Rail）

2−M3×0.5depth3

102−M2×0.4depth2.5(for mounting of Magnet)

9
6.5

14.7

5.5

3.5

0.5

14.7

Option mark RD means mounting position of magnet
and switch rail is on the opposite side of the center lineof the ﬁgure.

14

0.5

5.5

With Magnet and Switch Rail

33

4.5

Stroke

39
5.5

28

5＋0.7
0 （Stroke）

φ3

2.2

depth2.5

D

8.2
3.2

16
0
22.4 −0.1

2−M3（Port）

5＋0.7
0 （Stroke）

13025−0.1

3 ＋0.05
depth3
0

23

1

10

35

B
B

D − Datum Plane
18

PICO SYNCHRO

A

1.8

11.5

16±0.051

10

6

3 ＋0.05
depth2.5
04

2−M3×0.5depth3＋0.05
02−M3×0.5depth3

0

2.2

1

3.2
φ3 ＋0.05
depth2.5
0

0

12

4

8.2

10−0.124.4 ±0.05

12

10.5
23
A Arrow view

6

10−0.110

0.3±0.1

16

3 ＋0.05
depth2.50

2−M5×0.8depth5(for mounting of Adjusting Bolt)

5.5

022.4 −0.1

PST

φ3 ＋0.05
depth3
0

5
22

798

4−M3×0.5depth3

PST

PICO SYNCHRO

Without Magnet and Switch Rail
102−M2.5×0.45depth3(for ﬁxing Switch Rail)33

2−M3×0.5depth3

5.5

14

3.5

5.5

2−M2×0.4depth2.5(for ﬁxing Magnet)

4.5

PST−SD6−5

With Metal Stopper, Rubber Stopper

10.5

PST(S)−SD6−5−QR
QT

OR: Metal Stopper
QT: Rubber Stopper
Stroke Adjustment: 5mm

MAX49.5
16
Width across ﬂast 7

Width acrossﬂast socket 2.5

104With Bracket
PST（S）−LB6−5

22
4

46

4

φ3

10

φ3 ＋0.05
depth30

6PST

depth354

4−φ3.5thru
φ6 counterbore
depth3.2

PICO SYNCHRO

4

＋0.05
0

30

With Bracket

34

799

DIMENSIONS(mm)PST6−10BASIC

PSTS−SD6−10（−RD）
Bore Size

2−M2.5×0.45depth3（for mounting of Switch Rail）

9

5.5

14.7
10
2−M2×0.4depth2.5(for mounting of Magnet)

6.5

Option mark RD means mounting position of magnet
and switch rail is on the opposite side of the center lineof the ﬁgure.
2−M3×0.5depth3

4.5

14.7

3.5

19

0.5

5.5

With Magnet and Switch Rail

38

0.5

Stroke44
5.5

33

2−M3×0.5depth3

2.2

0

2.2
φ3

depth2.5

8.2
3.2

6
16

0
22.4 −0.1

2−M3（Port）

10＋0.70 （Stroke）

1323
025−0.1

3 ＋0.05
depth3
0

1

10

35

B
B

D − Datum Plane
18

PICO SYNCHRO

A

1.8

11.5

16±0.051

10

4

2−M3×0.5depth3＋0.05
0

φ3 ＋0.05
depth2.5
0

0

12

1

D
0.3±0.1

4

3.2
8.2

10−0.124.4 ±0.05

12

10.5
23
A Arrow view

6

10−0.110(for mounting of
Adjusting Bolt)

16

3 ＋0.05
depth2.50

2−M5×0.8depth5

5.5

022.4 −0.1

3 ＋0.05
depth2.50

10 ＋0.70 （Stroke）

PST

φ3 ＋0.05
depth3
0

5
27

800

4−M3×0.5depth3

PST

PICO SYNCHRO

Without Magnet and Switch Rail
102−M2.5×0.45depth3(for ﬁxing Switch Rail)38

2−M3×0.5depth3

5.5

19

3.5

5.5

2−M2×0.4depth2.5(for ﬁxing Magnet)

4.5

PST−SD6−10

With Metal Stopper, Rubber Stopper

10.5

PST（S）−SD6−10−QR
QT

OR: Metal Stopper
QT: Rubber Stopper
Stroke Adjustment: 5mm

MAX54.5
16
Width across ﬂast 7

Width acrossﬂast socket 2.5

104With Bracket
PST（S）−LB6−10

22
4

51

φ3

4
10

φ3 ＋0.05
depth30

6PST

depth359

4−φ3.5thru
φ6 counterbore
depth3.2

PICO SYNCHRO

4

＋0.05
0

30

With Bracket

39

801

INSTALLATION OF SWITCH■Switch Setting Position
B
A

RB（RC）1, 2 Switch
Model

Unit：㎜

Switch Setting Position On Hold Hysteresis
Distance（c）
A
B

PST6− 53

9

PST6−103

14

6

１ or less

RB（RC）4, 5 Switch
Model

Unit：㎜

Switch Setting Position On Hold Hysteresis
Distance（c）
A
B

PST6− 5

5

11

PST6−10

5

16

Explanation of hysteresis and on hold distance.

■Installataion of Switch
Assemble the ﬁxing screw with a nut to the switch.
Insert the switch into the groove.
After setting the position, fasten the screw bya screwdriver.
Fastening torgue of ﬁxing screw must be 0.1 N・m.

NutFixing screw M2.5×4.5

SwitchCUSTOM MADE

PICO SYNCHRO■To change grease●Change the grease of bearing part to the other grease.
●There is a case might not be handled depends on kind of grease or request.
●Cylinder part is lithium soap grease or ﬂuorine grease.
●Grease of purchased item can not be exchanged.
●Please contact us if double packing is requied.

Please ask us for more detailed infomation.

PST
802

2.5

１ or less

Switch Catalogue

■M E M O ■803

■M E M O ■804