Overload Protection and Safety Devicestsubaki.ca/pdf/library/L14007_SAFCON_revised.pdf · Tsubaki®: The choice for overload protection and safety The truth is, any machine can break

Overload Protection and Safety Devices Protecting Your Equipment, Protecting Your Investment

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SAFCON

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YOU PROTECT WHAT YOU VALUE

Protect Cutter

Protect Roller

Protect Conveyor

Protect Machine

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INTR

O


Tsubaki®: The choice for overload protection and safety

The truth is, any machine can break.

Of this we can be sure: Eventually something always happens. And

there’s no predicting. It’s almost a law of nature.

We often learn the hard way: Protection is smart. It saves money. It

saves time. In today’s environment of cost cutting and just in time

delivery, being prepared is just good business sense.

Unintended load changes in the workplace can have big consequences.

As equipment becomes more integrated, a shock or jam in one part of

the production layout can snowball into a complete system shutdown

— damaging equipment and losing product.

It doesn’t have to happen.

Tsubaki’s SAFCON® family of overload and protection devices offer a

solution to fit every need and keep you productive all day, every day,

without interruption, so you can get your product out the door.

Tsubaki offers not only the finest parts in the industry for your

equipment, it also offers protection for those parts and the machinery

they belong to. Our SAFCON® family – Shock Relay, Shock Guard,

Torque Limiter, and Axial Guard – covers the whole range of needs.

One-stop shopping.

You protect what you value. You use seat belts. You have a sump

pump in your basement. You wear a helmet when you cycle. Not

because things happen everyday, but because they CAN happen.

Are you protecting your equipment?

1

SHOCK RELAY

SHOCK GUARD

TORQUE LIMITER

AXIAL GUARD

0.00

SAFCON®

SHO

CK R

ELAY

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Shock Relay Pioneered by Tsubaki, the Shock Relay protects your equipment

against unexpected shock loads, overloads, and underloads

before damage occurs. Shock Relay protects the mechanical parts

of your equipment by monitoring the current on your motor and

shutting it down when the motor works too hard for too long.

Advantages to you:

Back to work with the press of a button

No parts to replace

Precision adjustment and setting

Little potential for nuisance trips

Monitors and protects equipment from up to 1,000 feet away

The Shock Relay adapts to virtually any kind of equipment that’s

driven by an electric motor and is used in applications in a broad

variety of industries, including:

INDUSTRY APPLICATION

Material handling Conveyors, turntables, elevators

Water treatment plants Pumps, scrappers, water screens

Food machineryScrew and belt conveyors, bucket elevators

Machine tool Tapping machines, drill presses

Chemical Pumps, agitators, filters

We’ve thought of everything.The Shock Relay knows when the motor driving your operation is

working too hard. It’s simple: you set the load current so Shock

Relay knows where your motor should be operating. And it

knows, too, when a surge is dangerous because you determine

the time of an acceptable momentary surge, allowing Shock

Relay to ignore small variations. Your adjustment of the start time

setting prevents the Shock Relay from engaging during start up

when the current draw of a motor is greater than the running

current.

Unlike mechanical devices like the Shear Pin Sprocket, which

requires downtime to fix, U.S. Tsubaki’s Shock Relay resets at the

press of a button. That’s it.

Sample Wiring Configuration

No advanced knowledge of electronics is necessary.

Motor size does not determine cost. Bigger motors don’t require a more

expensive Shock Relay.

UL Certification

RoHS Compliant

Shock Relay accepts single and three-phase motors up to 600 volts.

Operating Power 24-240 VAC/DC

Shock Relay selection is simple; it is based on the motor amperage of your machinery.

Shock Relay has an unlimited life - it does not wear out.

Adding the Tsubaki Shock Relay to your existing Start/Stop

circuit is easy. Generally, no advanced knowledge of electronics

is necessary. Just a few wires and a few adjustments quickly can

result in less down time and lower maintenance costs.

The Shock Relay protects your mechanical components.

Thermal relays and Inverters do not, their purpose is different,

their protection is different. Using the correct tool saves time

and money.

In the past, heavy loads and hard-working equipment required

large shear pins and bulky safety devices. Tsubaki has changed

the equation. Bigger motors do not equal a more expensive

Shock Relay. Simple, reliable, user-friendly.

SAFCON®

SHO

CK R

ELAY

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TSBSB SERIES2.44H x 2.13W x 2.60D

The most popular model for overload protection. Has

a built-in reset button, test button or automatic reset.

Unit has UL/cUL Certification, CE marking and is RoHS

compliant.

TSB150 SERIES 4.5H x 4.9W x 4.33D

The original Shock Relay with self-holding circuit and

analog meter. Four series available: Standard Overload,

Pre-Alarm notification, Impact detection, Over and

Underload protection.

TSB50 Automatic reset with fixed start-time to accommodate

motor in-rush current. Dual output contacts allow many

wiring options. Two-piece construction aids fitting into

crowded panels.

2.75H x 2.36W x 3.07D

TSBSM SERIES2.96H x 2.16W x 3.03D

MODEL SIZE AMPERAGE

RANGE

START TIME

RANGE

SHOCK TIME

RANGE

OUTPUT

CONTACT

RATING

MOUNTING

TSB150 151 0.3 ~ 16A 0.2 ~ 20s 0.2 ~ 3s 0.2A,

250VAC

Two components, both surface mount152-100 10 ~ 100A

Std, A, M, and

W styles

152-200 60 ~ 200A

152-300 90 ~ 300A

152-400 120 ~ 400A

TSBSB 05 0.5 ~ 6A 0.2 ~ 10s

0.2 ~ 10s

0.2 ~ 10s

0.2 ~ 5s

0.2 ~ 5s

0.2 ~ 5s

3A, 250VAC

3A, 250VAC

3A, 250VAC

35mm DIN or surface mount

10

30

1 ~ 12A

3 ~ 30A

60 5 ~ 60A

100 10 ~ 100A TSBSB05 plus surface mount transformer200 20 ~ 200A

300 30 ~ 300A

TSB50 0.4 ~ 16A 3s fixed 0.3 ~ 3s 0.1A,

250VAC

Two components, both surface mount

TSBSM 02 0.5 ~ 2A 1.5s fixed 1.0s fixed 3A, 250VAC Surface mount

Setup is typically easiest when the max amperage of the Shock Relay is close to the motor amperage.

TSBED SERIES2.77H x 2.20W x 3.04D

Designed to work with inverters. Digital display. Built-

in tamper-proof cover and built-in test button. Choose

between self-holding output relay and automatic reset.

Compact, all-in-one, and economically priced. Limited

features but perfect for the OEM customer. Special MTO

amperages available.

TSBED 020 0.2 ~ 2.4A 0.2 ~ 10s 0.2 ~ 5.0s 3A, 250VAC 35mm DIN or surface

mount075 1.2 ~ 5.8A

220 3.0 ~ 14A

550 6.0 ~ 34A

0.00

SAFCON®

TORQ

UE

SHIE

LD

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6 7 More information at www.ustsubaki.comMore information at www.ustsubaki.com


Shock Guard Tsubaki’s Shock Guard is a ball and detent mechanical device

that offers enhanced precision over other mechanical devices.

Bearing the brunt of the load when tripped, the Shock Guard

reacts instantly to save equipment and product. The Shock

Guard’s one-position design allows each ball to return to its

unique location when it resets so that your equipment resumes

its work exactly where it was before the jam or overload.

Advantages over other devices:

Instant and complete disengagement

Accurate and consistent torque setting Automatic re-engagement limits downtime and need for maintenance worker to switch tasks

Externally adjustable trip torque speed installation and setup

Backlash free operation

The Shock Guard is ideal in a wide range of settings and is

especially suited for more sophisticated applications that may

be prone to jams. Users require a consistent and predictable trip

point with quick resetting so that production is maintained and

each line stays in sync with where it left off.

Shock Guard is easy to set and adjust with its built-in meter

and indicator having distinct torque setting points for easy

verification. The asymmetrical arrangement of balls and pockets

allows for same-position resetting. Once the jam or overload is

removed, Shock Guard reengages automatically by jogging the

outer drive hub. Tsubaki offers a series of four categories of

Shock Guard to support all your protection needs.


Transport Conveyors, turntables, elevators

Pumping Pumps, agitators, filters

Plastic processingScrew and belt conveyors, bucket elevators

Metal working Tapping machines, drill presses

Environmental Water gate, water screen

PackagingBag making, cartoning, vacuum packing

Food processing Noodle making, flour mill

TGB SERIES An economical choice for general use. The TGB series can be

used with almost any machine. Offers automatic resetting,

easy-to-read torque indicator, and no backlash.

TGM SERIES The gasket and O-ring sealed construction in the TGM series is

unique. Excels in wet, dusty, and oily applications. Designed for

long life, tough environments.

TGX SERIES A high-precision option, the TGX series features no backlash

and unsurpassed operation rigidity. Ideal for machines that

require accurate positioning.

TGZ SERIES A release-type protection device, the TGZ series offers

on-off clutch capability. Its simple and straightforward

adjustments make it easy to use.

Manual disengagement feature assists with machine maintenance.

High speed or low speed service, bi-directional rotation.

Disengages at a pre-set torque rating. Protects your equipment against the unexpected.

Quick and easy reset.

Shock Guard Series

SAFCON®

TORQ

UE

SHIE

LD

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MODELTORQUE RANGE

(FT. - LBS.)MAXIMUM

RPMROUGH STOCK

BORE

MAXIMUM BORE

DIAMETERA E F (P.C.D.) G WT (LBS.)

TGB08-L 0.2 ~ 1.1

1200 0.20 0.31 1.54 1.575 1.339 1.02 0.3TGB08-M 0.6 ~ 1.6

TGB08-H 0.9 ~ 2.2

TGB12-L 0.5 ~ 2.2

1000 0.24 0.47 1.85 1.890 1.575 1.26 0.5TGB12-M 1.4 ~ 3.6

TGB12-H 2.2 ~ 4.3

TGB16-L 1.1 ~ 3.6

900 0.28 0.63 2.20 2.283 1.969 1.54 1.0TGB16-M 2.2 ~ 5.8

TGB16-H 4.3 ~ 8.7

TGB20-H 7.0 ~ 33 700 0.31 0.79 1.85 3.543 3.071 2.44 2.0

TGB30-L 14 ~ 40500 0.47 1.18 2.36 4.449 3.937 3.23 4.4

TGB30-H 39 ~ 123

TGB50-L 50 ~ 109

300 0.87 1.97 3.19 6.299 5.591 4.80 13.0TGB50-M 100 ~ 304

TGB50-H 144 ~ 398

TGB70-H 216 ~ 796 160 1.26 2.76 4.33 8.661 7.874 6.69 37.5

TGB90-L 325 ~ 976120 1.65 3.54 6.18 11.61 10.433 9.29 82.7

TGB90-H 686 ~ 2,313

TGB110-L 506 ~ 1,446100 2.05 4.33 7.68 13.98 12.795 11.30 153

TGB110-H 1,156 ~ 3,760

TGB130-L 868 ~ 2,24080 2.36 5.12 9.06 15.75 14.173 12.56 225

TGB130-H 1,950 ~ 5,200

TGB SERIES An economical choice for general use.

The TGB series can be used with almost any

machine. Offers automatic resetting, easy-to-read

torque indicator, and no backlash.

TGM SERIES The gasket and O-ring sealed construction in

the TGM series is unique. Excels in wet, dusty,

and oily applications. Designed for long life,

tough environments.

MODELTORQUE RANGE

(LBS. - FT.)MAXIMUM

RPMBORE RANGE A F G H I WT (LBS.)

TGM3 1.1 ~ 2.7 600 0.39 ~ 0.55 2.36 3.15 0.87 1.181 1.97 1.3TGM6 1.8 ~ 4.7 600 0.39 ~ 0.55 2.36 3.15 0.87 1.181 1.97 1.3

TGM20 4.7 ~ 14.5 500 0.55 ~ 0.79 2.76 3.94 1.18 1.575 2.36 2.4

TGM60 14.5 ~ 50 300 0.79 ~ 1.18 3.50 5.24 1.87 2.362 3.39 5.5

TGM200 50 ~ 166 200 1.10 ~ 1.97 4.33 7.00 2.75 3.228 5.24 11.9

TGM400 166 ~ 333 150 1.50 ~ 2.36 6.18 10.75 3.50 4.488 7.48 37.8TGM800 333 ~ 665 150 1.50 ~ 2.36 6.18 10.75 3.50 4.488 7.48 37.8

Select based on torque required, rpm, and shaft diameter:


SPECIFICATIONS

SELECTION

TGB08~TGB16 TGB20~TGB50 TGB70~TGB130

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TORQ

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LD

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TGX SERIES A high-precision option, the TGX series features no

backlash and unsurpassed operation rigidity. Ideal for

machines that require accurate positioning.

TGZ SERIES A release-type protection device, the TGZ series

offers on-off clutch capability. Its simple and

straightforward adjustments make it easy to use.

MODELTORQUE

RANGE (FT. - LBS.)

MAXIMUMRPM

ROUGH STOCK BORE

MAXIMUM BORE

DIAMETERA H J K (PCD) L

U (SCREW DIA. AND LENGTH)

WT (LBS.)

TGZ20-L 1.7 ~ 6.1

1800 0.32 0.79 2.91 0.43 3.78 3.386 2.835 M5 X 10 5.7TGZ20-M 3.0 ~ 11.6

TGZ20-H 6.0 ~ 23.1

TGZ30-L 4.3 ~ 15.21800 0.47 1.18 3.29 0.45 4.65 4.173 3.425 M6 X 12 9.2TGZ30-M 14.5 ~ 38.3

TGZ30-H 28.9 ~ 79.5TGZ40-L 18 ~ 69

1800 0.67 1.57 3.98 0.55 5.98 5.472 4.488 M6 X 12 19TGZ40-M 32 ~ 94

TGZ40-H 65 ~ 181TGZ50-L 46 ~ 116

1800 0.87 1.97 4.51 0.63 7.01 6.378 5.236 M80 X 16 30TGZ50-M 94 ~ 224

TGZ50-H 181 ~ 333

MODELTORQUE RANGE

(FT. - LBS.)

MAXIMUMRPM

ROUGH STOCK BORE

MAXIMUM BORE

DIAMETERA G H (PCD) J (PCD)

Q (SCREW DIA. AND LENGTH)

U (SCREW DIA. AND LENGTH)

WT (LBS.)

TGX10-L 1.2 ~ 4.7

1400 0.27 0.59 2.09 2.441 2.126 1.339 M4 x 6 M4 X 7 1.7TGX10-M 4.0 ~ 10.9

TGX10-H 8.0 ~ 21.7

TGX20-L 4.8 ~ 17.4

1100 0.33 0.98 2.52 3.386 2.913 1.969 M5 x 8 M4 X 7 3.7TGX20-M 9.6 ~ 25.1

TGX20-H 18.8 ~ 50TGX35-L 17 ~ 50

800 0.47 1.38 2.68 4.213 3.465 2.362 M6 x 7 M5 X 8 5.5TGX35-M 32 ~ 72TGX35-H 64 ~ 145TGX50-L 33 ~ 87

600 0.71 2.17 3.62 5.827 5.118 – M8 x 13 – 15TGX50-M 66 ~ 145

TGX50-H 130 ~ 289

TGX70-L 94 ~ 268480 0.91 2.76 3.86 7.283 6.457 – M10 x 13 – 25TGX70-M 195 ~ 376

TGX70-H 289 ~ 578



SELECTION

SELECTION

SAFCON®

TORQ

UE

LIM

ITER

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Torque Limiter Refined by Tsubakimoto in Japan for over 40 years, the Torque

Limiter is a simple and inexpensive mechanical device that, true

to its name, limits damage to equipment when an unexpected

increase in torque occurs because of a jam or overload.

Easy to install, the Torque Limiter attaches to a shaft and holds

the drive or driven sprocket, gear, or sheave. A frictional system,

the Torque Limiter reacts instantly when there is a jam by slipping

and absorbing the brunt of the force, preventing the increased

power from damaging your equipment.


Competitively priced

No resetting is required

Adaptable to thousands of types of equipment configurations

Can be used alone or in conjunction with other process controls.

Not all Torque Limiters are created equally.

Tsubaki has developed a superior Torque Limiter that allows

for more precise adjustments than other products of the same

name. We accomplish this by using a finer-pitch thread on the

adjustment bolts enabling accurate setting of the slip-point – no

longer settle for just a ballpark value. Tsubaki Torque Limiters use

specially-formulated friction materials to extend time between

replacement and improve repeatability of the slip-point. Tsubaki

Torque Limiters provide long life, consistent performance, and the

best value over years of operation.


Material handling Conveyors, turntables, elevators

Water treatment plants Pumps, scrappers, water screens

Food machineryScrew and belt conveyors, bucket elevators

Machine tool Tapping machines, drill presses

Chemical Pumps, agitators, filters

Environmentally safe, Tsubaki Torque Limiter contains no asbestos and no lead.

Torque Limiter can be used with a sprocket, sheave, or gear.

Tsubaki Torque Limiter’s finer adjustment screw pitch means more precision.

Excellent for hard work and heavy use.

TL SERIES Traditional machine protection. Friction-type

construction. Slip-torque setting is done by simply

tightening the adjusting nut or bolts. Competitively

priced and easy to use.

MODELTORQUE RANGE

(LBS. - FT.)MAXIMUM

RPM

ROUGH STOCK BORE

MAX. BORE W.STD. KW

BUSHING LENGTHS D DH L S (MAX.)WT

(LBS.)

TL200-1L 0.7 ~ 1.5

1800 0.28 0.55 0.150, 0.236 2.0 0.95 1.14 0.276 0.44TL200-1 2.2 ~ 7.2

TL200-2 5.0 ~ 15

TL250-1L 2.2 ~ 5.0

1800 0.39 0.88 0.177, 0.256 2.5 1.38 1.88 0.354 1.32TL250-1 5.0 ~ 20

TL250-2 10 ~ 40TL350-1L 7.0 ~ 15

1800 0.67 1.00 0.177, 0.256, 0.374 3.5 1.65 2.44 0.630 2.65TL350-1 15 ~ 55TL350-2 25 ~ 110

TL500-1L 15 ~ 361800 0.78 1.75 0.256, 0.374 5.0 2.56 3.0 0.630 7.72TL500-1 35 ~ 155

TL500-2 65 ~ 310TL700-1L 36 ~ 87

1800 1.18 2.63 0.374, 0.492 7.0 3.75 3.86 1.142 18.5TL700-1 85 ~ 420

TL700-2 165 ~ 800

TL10-16 289 ~ 9401000 1.18 2.84 0.492, 0.610, 0.768 10 3.94 4.53 0.945 46.3

TL10-24 435 ~ 1,370

TL14-10 651 ~ 1,960500 1.57 3.94 0.610, 0.768, 0.925 14 5.71 5.91 1.142 115

TL14-15 1,446 ~ 2,890

TL20-6 1,807 ~ 3,615500 1.97 5.12 0.610, 0.768, 0.925 20 7.28 6.89 1.22 258

TL20-12 3,400 ~ 6,870

Select based on torque required, rpm, and shaft diameter. Bushing Length selection should be equal to or shorter than width of center member (sprocket, etc.):

SELECTION

TL200~TL350 TL500~TL700 TL10~TL20

SAFCON®

LIN

EAR

SHIE

LD

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Select based on thrust load:

Axial Guard Straight-line operations like pushers and cranks present

unique challenges for determining and deflecting overload.

Distinguished in the marketplace, U.S. Tsubaki’s Axial Guard

offers a new style of protection using ball and grooves that

provide a consistent, repeatable, user-defined trip point.


Highly-accurate repeatable trip point

No parts to replace

Easy installation using tapped end caps

Load adjustment set with a single screw

Non-backlash design allows a “rigid” installation

Axial Guard offers overload protection where motion is back

and forth rather than rotating. This new-style mechanical

protection device is easy to install and to adjust.

Axial Guard works in either pushing or pulling applications

– and the trip point in either direction is identical. When

overloads occur, the Axial Guard “trips” and eliminates the

overload that can result in damage and downtime. To reset,

a small pull or push in the opposite direction is all it takes to

return Tsubaki’s Axial Guard to operation. Downtime has been

limited and production is up and going quickly.


Bulk handlingConveyor torque arms, damper doors

Assembly equipmentInserters, pick and place equipment

Metal-forming equipment Extruders, formers

Packaging equipment Carton sealing, labeling

Axial Guard is a new style of machine protection.

Axial Guard mounts directlyto shaft.

Axial Guard provides immediate release when overload occurs.

Axial Guard addresses the difficult problem of straight-line operations.

AXIAL GUARD An all new mechanical-type overload device,

the Axial Guard protects when the load acts

linearly, as with pushers or cranks.

MODELTHRUST LOAD RANGE (LBS.)

A N P U X WT (LBS.)

TGA65 33 ~ 143 1.3 2.3 0.6 M6 M3 0.4

TGA150 132 ~ 330 1.5 2.8 0.8 M8 M4 0.9

TGA250 165 ~ 550 1.8 3.5 0.9 M12 M5 1.5

TGA350 220 ~ 770 2.2 4.3 1.2 M14 M6 2.6

SELECTION

The cam pushes the work piece. When overload occurs due to the over-weighted work piece or jamming, the Axial Guard trips and protects the machine.

SAFCON®

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16More information at www.ustsubaki.com

C

Rubbing Surface on both ends

OB

OA

0.0012

0.0012

A

A

A

A 0.0019

0.0019

A A

Hub Hub

C

Rubbing Surface on both ends

OB

OA

0.0012

0.0012

A

A

A

A 0.0019

0.0019

A A

Hub Hub

MODEL RS35 RS40 RS50 RS60 RS80 RS100 RS120 RS140 RS160

TL200 20 16

TL250 20 17

TL350 26 21 18 15

TL500 29 25 19

TL700 33 26 21 16

TL10 29 24 22

TL14 39 33 29 26

TL20 54 46 40 35

MINIMUM ROLLER CHAIN SPROCKET SIZE AND NUMBER OF TEETH

MODELA

MIN. DIA.B

BOREC

MAXSURFACE FINISH-

A&B

TL200 2.17 1.1811 ~ 1.1822 0.276

TL250 2.76 1.6141 ~ 1.6161 0.354

TL350 3.74 1.9291 ~ 1.9311 0.630

TL500 5.24 2.9133 ~ 2.9154 0.630

TL700 7.25 4.1338 ~ 4.1358 1.142

TL10 10.24 5.1349 ~ 5.3177 0.945

TL14 14.25 7.2047 ~ 7.2075 1.142

TL20 20.24 8.8976 ~ 8.9004 1.220

CENTER MEMBER MACHINING TOLERANCES

63 micro-inch finish max.

Drawing illustrates hub held in machining center. Note machining values, H7 bore tolerances recommended.

TORQUE LIMITER HUB MACHINING

TORQUE LIMITER MACHINING GUIDELINES

C

Rubbing Surfaceon both ends

OB

OA

0.0012

0.0012

A

A

A

A0.0019

0.0019

A A

Hub Hub

C

Rubbing Surfaceon both ends

OB

OA

0.0012

0.0012

A

A

A

A0.0019

0.0019

A A

Hub Hub

TL200~700 TL10~20

Sprocket

TORQ

UE

LIM

ITER

Tsubaki: The choice for overload protection and safety

MODEL RS25 RS35 RS40 RS50 RS60 RS80 RS100 TS120 RS140 RS160

TGB08 24 17 14 12 10

TGB12 28 20 16 13 11

TGB16 32 23 18 15 14

TGB20 48 34 26 22 19 15 13 11

TGB30 60 41 32 26 22 18 15 13

TGB50 57 43 35 30 24 20 17

TGB70 58 47 40 31 26 22

TGB90 62 52 40 33 28 25 22

TGB110 74 62 48 39 33 29 26

TGB130 83 70 53 43 37 32 24

MINIMUM ROLLER CHAIN SPROCKET SIZE AND NUMBER OF TEETH

Drawing illustrates hub held in machining center. Note machining values, H7 bore tolerances recommended.

TGB TORQUE SHIELD HUB MACHINING

TGB SHOCK GUARD MACHINING GUIDELINES

MODELA

PCDB C D E F

TGB08 1.339 3 0.139 1.5748 -H7 1.103 0.118

TGB12 1.575 3 0.177 1.8898 - H7 1.299 0.118

TGB16 1.969 3 0.177 2.2835 - H7 1.614 0.118

TGB20 3.071 4 0.217 3.5433 - H7 2.520 0.118

TGB30 3.937 6 0.260 4.4488 - H7 3.307 0.157

TGB50 5.591 6 0.354 6.2992 - H7 4.882 0.197

TGB70 7.874 6 0.433 8.6614 - H7 6.772 0.197

TGB90 10.433 8 0.531 11.6141 - H7 9.449 0.197

TGB110 12.795 6 0.689 13.9763 - H7 11.496 0.197

TGB130 14.173 8 0.689 15.7840 - H7 12.795 0.197

DRIVE MEMBER MACHINING TOLERANCES

B O C drilled hole

DO E

O

Hub

0.0012 A

0.0012 A

0.0012 A

0.0012 A

A

Hub

A

FDCP A

B O C drilled hole

D

O E

O

Hub

0.0012 A

0.0012 A

0.0012 A

0.0012 A

A

Hub

A

F D C

P A

B O C drilled hole

D

O E

O

Hub

0.0012 A

0.0012 A

0.0012 A

0.0012 A

A

Hub

A

F D C

P A

TGB08~16 TGB20~130

B O C drilled hole

DO E

O

Hub

0.0012 A

0.0012 A

0.0012 A

0.0012 A

A

Hub

A

FDCP A

B O C drilled hole

DO E

O

Hub

0.0012 A

0.0012 A

0.0012 A

0.0012 A

A

Hub

A

FDCP A

Sprocket


Pneumatic torque adjustment mechanism

One position type

High accuracy

Air clutch ON-OFF mechanism

This uniquely assembled torque transmission element ball and pocket configuration only engages in one position.

You can remotely adjust the torque during operation by adjusting the air pressure in the regulator.

Achieves minimal backlash.

Also usable as an ON-OFF clutch in remote control.

A multifunctional product combining a ball type overload protection device and an air clutch function.

Features

Shock Guard TGK Series

ＴＧＫ

Type 2Enables direct mounting of A type sprockets and pulleys.

Type 5

The Echt -F lex Coupl ing provides angular tolerance.Parallelism errors are not allowed.

Type 7The Echt -F lex Coup l ing provides angular tolerance and parallelism tolerance.

(Ex-MYTORQ 630 Series)

79

TGK Series

Shock Guard

Construction andOperating Principles

TGK20 to 45

The TGK series transfers driving force from the hub to the drive plate on the output side via drive balls (and vice versa).Bolt a sprocket or timing pulley directly to the drive plate.The hub fl ange has several holes to hold the drive balls.There are pockets on the drive plate on the output side, and the drive balls are fi tted intothe pockets.If you feed air into the cylinder through the air supply port, the piston moves toward the drive plate.Then, the drive balls are pushed via the slide plate and transfer the driving force.You can change the torque according to the load during operation. You can also change the torque automatically by making a system to change the pressure using a timer or controller.For instance, by using such a system to switch between a high torque corresponding to the starting torque and a low operating torque, you can set the torque to the optimal value for the machine.When an overload occurs, the drive balls push back the slide plate toward the cylinder against the air pressure.The drive balls then come out of the pockets and start to idle.

By detecting the amount of movement of the sensor target toward the cylinder by a limit switch and removing the force applied to the drive balls by removing the air from the cylinder, you can completely release the driving force and protect the machine.Clutch mechanismTo disconnect the drive source for adjustment or maintenance of the machine, stop feeding air and remove the air from the cylinder. The housing and slide plate are then pushed back toward the cylinder by the built-in spring.Consequently, the drive balls come out of the pockets on the drive plate for declutching.The drive plate has a bearing inside, and therefore there are no problems even if the drive plate is left to idle for a long period of time.Resetting (clutching) procedureIf you supply air from the air supply port and restart the operation, the drive balls automatically return to their positions within one revolution.If you continue to rotate the TGK series while feeding air after the occurrence of an overload, the TGK series repeatedly reset. Therefore, detect overloads using a limit switch or a similar device and stop feeding air.

During normal operation (engagement) During overload (trip)

Slide plate

Drive plate（pocket）

Drive ball（Steel ball）

Piston Air supply port

Cylinder

Hub

Sensor target

Construction andOperating Principles

34

219

175

1814

15

1

166

22

2321

2028

27

1213

1124

7

2526

9

108

29

① Hub② End nut③ Hexagon socket head set screw

④ Set piece⑤ Drive plate⑥ Slide plate⑦ Cylinder⑧ Pipe joint⑨ Cylinder cover

⑩ Hex cap countersunk screw

⑪ Piston⑫ Seal A⑬ Seal B⑭ Drive ball　 (Steel ball A)

⑮ Bush⑯ Snap ring A⑰ Radial　bearing⑱⑲ Thrust　　bearing A⑳ Housing㉑ Hex cap countersunk screw

㉒ Thrustbearing B

㉓ Thrust race㉔ Dry bearing㉕ Ball bearing㉖ Snap ring B㉗ Sensor target㉘ Hex nut㉙ Grease nipple

TGK20 to 45

80

Shock Guard

Transmissible Capacity/DimensionsφH h6

P.C.D.φG

φF

φE

φL1φS

R

D

U Amount of movement due to overload

O2

2-Q through2×90°

Z2

Z1

2-Z

2-O16-N6×60°

φY

B

C

A

J1

Y1

φI

φM

U1 Displacement during declutching

⑲

④ ② ③ ⑪ ⑬⑫ ⑦ ⑨ ①

⑩ ⑧⑰ ⑤ ⑱ ⑭ ⑮ ⑯ ㉙ ⑥ ㉒㉓ ⑳ ㉕㉖

㉘㉑㉗㉔

O3 O3O4

■TGK20-A2・TGK30-A2・TGK45-A2

⑥ Slide plate⑦ Cylinder⑧ Pipe joint⑨ Cylinder cover⑩ Hex cap countersunk screw⑪ Piston⑫ Seal A⑬ Seal B⑭ Drive ball (Steel ball A)⑮ Bush⑯ Snap ring A⑰ Radial bearing⑱⑲ Thrust bearing A⑳ Housing㉑ Hex cap countersunk screw㉒ Thrust bearing B㉓ Thrust race㉔ Dry bearing㉕ Ball bearing㉖ Snap ring B㉗ Sensor target㉘ Hex nut㉙ Grease nipple

① Hub② End nut③ Hexagon socket head set screw

④ Set piece⑤ Drive plate

Unit : mm

Model No. Set torque rangeN・m

Max. rpmr/min*1

Air pressureMPa

Shock Guard SA B C D E F G

P.C.D.Hh6 IRough bore

diamterMin. borediameter

JIS keyway for max. bore dia.

TGK20-A2 15 to 65 340 0.14 to 0.55 8 10 20 79 11 3.5 45.5 88 80 70 57 51

TGK30-A2 30 to 147 230 0.14 to 0.55 10 12 30 95 13 5.5 53 115 100 90 75 69

TGK45-A2 90 to 392 430 0.14 to 0.55 20 22 45 124 15.5 7 74.4 159 140 125 100 94

Model No. J1 L1 MN screw

diameter×length

O1 screw diameter×

lengthO2 O3 O4 Q screw

diameter*2 R*2 U U1Air supply

portY*3

Y1

TGK20-A2 61 88 30 M5×9 M5×10 21 135° 90° M5 5 1.2 1.8 4 21

TGK30-A2 75 115 45 M6×11 M6×12 23 135° 90° M6 5 1.8 2.0 8 23

TGK45-A2 98 159 60 M8×13 M8×15 34 120° 90° M8 8 2.2 2.9 8 34

Model No.Z

Z1 Z2 Mass*4

kgMoment of inertia*4

kg・m2Allowable radial

load NScrew diamter × length

Facing diameter × Depth

TGK20-A2 M4×10 φ5×3.5 15 35 2.3 0.00061 6200

TGK30-A2 M4×10 φ5×4.5 16.5 45 4.6 0.00201 9500

TGK45-A2 M5×10 φ6×5 20 65 11.2 0.00854 12700

*1. Contact us for details on use at speeds higher than the maximum speed. 2. Setscrew taps are not processed. Dimensions are for reference only. 3. Y represents the outer diameter of the applicable tube. 4. Mass and moment of inertia are based on the bores' maximum diameters.Note) When installing a pulley or sprocket, use high-tensile bolts (G10.9 or higher) and determine the length carefully so that the bolts are not buried deeper than the

mounting tap depth N.The air supply port is a pipe joint applicable to both nylon and urethane tubes.An example of the installation of a limit switch is shown on page 84.

Type ２

81

TGK Series

Shock Guard

Transmissible Capacity/Dimensions

φL1φS

D

O2

2×90°

Z2

2-Z

2-O1

φY

B2

A

J1

Y1

φE1

φF1

φS1

B1

A1

A3

C1 A2

X

2-P1

4-N1

R1

2×90°

φM

R

② ③ ⑤ ⑥ ④ ⑦ ①

⑧⑨

⑩⑪

Z1

O3 O3O4

This is acombination of the TGK-A2 and the Echt-Flex Coupling NEF Series Single Type.

U Amount of movement due to overload

2-Q through2-Q1 through

U1 Displacement during declutching


① Mounting adapter② Coupling hub③ Reamer bolt④ Washer A⑤ Washer B⑥ Disk⑦ U nut⑧ Hex cap bolt⑨ Spring washer⑩ Hexagon socket head set screw

⑪ Set piece

Unit : mm


Max. rpmr/min*1

Air pressureMPa

Shock Guard S Coupling S1A A1 A2 A3 B1 B2 C1 DRough bore



Rough borediamter

Min. borediameter


TGK20-A5 15 to 65 340 0.14 to 0.55 8 10 20 15 17 42 79 33.5 88.3 133 24.5 14 11.2 45.5

TGK30-A5 30 to 147 230 0.14 to 0.55 10 12 30 15 17 60 95 47.8 115.5 175 33.8 22 11.7 53

TGK45-A5 90 to 392 430 0.14 to 0.55 20 22 45 25 27 74 124 57.2 137.5 211.5 43.2 17 16.8 74.4

Model No. E1 F1 J1 L1 MN1 screwdiamter ×

length

O1 screw diameter×length

O2 O3 O4P1 screw diameter×length

Q screw diameter

*2

Q1 screw diameter

*2R*2 R1*2 U U1

Air supply port Y*3 Y1

TGK20-A5 104 61 61 88 30 M5×20 M5×10 21 135° 90° M4×6 M5 M5 5 8 1.2 1.8 4 21

TGK30-A5 143 84 75 115 45 M6×25 M6×12 23 135° 90° M5×6 M6 M6 5 12 1.8 2.0 8 23

TGK45-A5 168 106 98 159 60 M8×25 M8×15 34 120° 90° M5×6 M8 M8 8 15 2.2 2.9 8 34

Model No.Z

Z1 Z2 Mass*4


kg・m2Coupling

model No. X*5

Allowable MisalignmentScrew diamter × length

Facing diameter × Depth

Angularmisalignment deg

Shaft direction displacement*6

TGK20-A5 M4×10 φ5×3.5 15 35 4.2 0.00319 NEF25S 21 1 ±1.4

TGK30-A5 M4×10 φ5×4.5 16.5 45 9.9 0.0164 NEF80S 29.5 1 ±1.8

TGK45-A5 M5×10 φ6×5 20 65 18.4 0.0359 NEF130S 20 1 ±2.5

*1. Contact us for details on use at speeds higher than the maximum speed. 2. Setscrew taps are not processed. Dimensions are for reference only. 3. Y represents the outer diameter of the applicable tube. 4. Mass and moment of inertia are based on the bores' maximum diameters. 5. This is the space required for the insertion of a reamer bolt. 6. The allowable displacement in the shaft direction is the value when the angular error is zero.Note) The air supply port is a pipe joint applicable to both nylon and urethane tubes.

An example of the installation of a limit switch is shown on page 84.Parallelism errors are not allowed.

Type ５

82

Shock Guard

Transmissible Capacity/Dimensions

φL1 Ｚ1

φS

R

D

O2

2×90°

Z2

2-Z

2-O1

φY

B2

A

J1

Y1

φE1

φF1φS1

C1

A3

C2 A2

X

A1

C1B1

4-N1

2-P1

R12×90°

φM

② ⑧⑤⑦⑥④③ ①

⑨⑩

⑪⑫

O3 O3O42-Q through

U Amount of movement due to overloadU1 Displacement during declutching

This is acombination of the TGK-A2 and the Echt-Flex Coupling NEF Series Long Spacer Type.

2-Q1through


① Mounting adapter② Coupling hub③ Long spacer④ Reamer bolt⑤ Washer A⑥ Washer B⑦ Disk⑧ U nut⑨ Hex cap bolt⑩ Spring washer⑪ Hexagon socket head set screw

⑫ Set piece

Unit : mm


Max. rpmr/min*1

Air pressureMPa

Shock Guard S Coupling S1A A1 A2 A3 B1 B2 C1 C2 DRough bore



Rough borediamter

Min. borediameter


TGK20-A7 15 to 65 340 0.14 to 0.55 8 10 20 15 17 42 79 33.5 88.3 221.8 24.5 14 11.2 100 45.5

TGK30-A7 30 to 147 230 0.14 to 0.55 10 12 30 15 17 60 95 47.8 115.5 290.3 33.8 22 11.7 127 53

TGK45-A7 90 to 392 430 0.14 to 0.55 20 22 45 25 27 74 124 57.2 137.5 334.7 43.2 17 16.8 140 74.4

Model No. E1 F1 J1 L1 MN1 screwdiamter ×

length

O1 screw diameter×length

O2 O3 O4P1 screw diameter×length

Q screw diameter

*2

Q1 screw diameter

*2R*2 R1*2 U U1

Air supply port Y*3 Y1

TGK20-A7 104 61 61 88 30 M5×20 M5×10 21 135° 90° M4×6 M5 M5 5 8 1.2 1.8 4 21

TGK30-A7 143 84 75 115 45 M6×25 M6×12 23 135° 90° M5×6 M6 M6 5 12 1.8 2.0 8 23

TGK45-A7 168 106 98 159 60 M8×25 M8×15 34 120° 90° M5×6 M8 M8 8 15 2.2 2.9 8 34

Model No.Z

Z1 Z2 Mass*4


kg・m2Coupling

model No. X*5

Allowable MisalignmentSrew diamter ×

lengthFacing diameter × Depth

Angularmisalignment deg

Shaft direction displacement*6

Parallelmisalignment

TGK20-A7 M4×10 φ5×3.5 15 35 5.7 0.00540 NEF25W 21 2 ±2.8 1.5

TGK30-A7 M4×10 φ5×4.5 16.5 45 13.8 0.0276 NEF80W 29.5 2 ±3.6 2.0

TGK45-A7 M5×10 φ6×5 20 65 23.5 0.0573 NEF130W 20 2 ±5.0 2.1

*1. Contact us for details on use at speeds higher than the maximum speed. 2. Setscrew taps are not processed. Dimensions are for reference only. 3. Y represents the outer diameter of the applicable tube. 4. Mass and moment of inertia are based on the bores' maximum diameters. 5. This is the space required for the insertion of a reamer bolt. 6. The allowable displacement in the shaft direction is the value when the angular error is zero.Note) The air supply port is a pipe joint applicable to both nylon and urethane tubes.

An example of the installation of a limit switch is shown on page 84.

Type ７

83

TGK Series

Shock Guard

Torque adjustment

Air control system

Limit Switch Installation Example (Standard option）

You can adjust the torque precisely by adjusting the air pressure corresponding to the required torque. To adjust the air pressure, use a regulator (pressure controller), refer to the torque correlation charts, and feed air into the cylinder of the TGK series. You can even change the operating torque during operation by changing the air pressure. Operating air pressure: 0.14 to 0.55 MPa(Note) Be careful to keep the air supply source pressure

higher than the preset pressure.

The operating torque of existing protection devices cannot be changed during operation.However, it is possible to change the operating torque of the TGK series during operation by changing the air pressure. Therefore, you can protect the machine by setting the torque higher than the starting torque only at startup, and then change the torque to the optimal value at a later time (refer to the figure on the right).

Upon request, the product is delivered with a limit switch installed.

Torque Correlation Chart

00.6 0.5 0.4 0.3 0.2 0.1

10

20

30

40

50

60

70

90

80

Air pressure MPa

TORQUEN・m

0

1

2

3

4

5

6

7

8

9

00.6 0.5 0.4 0.3 0.2 0.1

25

50

75

100

125

150

175

225

200

0

2.5

5.0

7.5

10.0

12.5

15.0

17.5

20.0

22.5

Air pressure MPa

TORQUEN・m

00.6 0.5 0.4 0.3 0.2 0.1

50

100

150

200

250

300

350

450

400

0

5

10

15

20

25

30

35

40

45

Air pressure MPaTORQUEN・m

Size Minimum torque N・m Maximum torque N・m

TGK20 15.0 65.0

TGK30 30.0 147

TGK45 90.0 392

Size LA LB LC LD LE Model of limit switch (Omron)

TGK20 73.5 17.5 59 71.5 16.2

SHL-Q55TGK30 73.5 17.5 73.5 86 10.2

TGK45 73.5 17.5 95.5 108.5 －

LE

LA LB

LC LD

0

TORQUE

100%

Time

Starting torque

Operating torque of the TGK

TGK20 TGK45TGK30

84

Shock Guard

Air intake

Size　Ｗ 200mm、Ｈ 190mm、Ｄ 90mm

To TGK air supply port

1 4 8 9

2 3 7

Motor startPB1

MS1

Motor stopPB2 R2 R1

Pressure switchPS1

R1

R2 S1

Limit switch

OX

Selecting switchSS1

OX

Selecting switchSS1

MS1 Motor start

R1 Pressure switch

R2

Solenoid valve

Single air control system

Air device configuration

Electrical diagram

Basic operation

Part number Device name Referential model number（SMC）

1 Air fi lter AF20-02

2 Regulator AR20-02

3 Pressure gauge G36-02

4 Spacer with bracket Y200T

5 －－

6 －－

7 3-port solenoid valve VT307-1G-02

8 Silencer AN20-02

9 Pressure switch IS3000-02

Air intake To TGK air supply port

Electrical diagram

Selecting switch (SS1) is set to "AIR ON."Press the motor start button (PB1). The motor starts and the TGK series returns to the "CLUTCH ON" state. The limit switch is turned on, the self-holding of the motor is completed, and the motor continues to rotate even if you release the motor start button (PB1)Note) If the pressure switch is off, the motor does not rotate even if

you press the motor start button (PB1).

The sensor target of the TGK series moves simultaneously when an overload occurs, and the amount of movement is detected by a limit switch or a similar device.If the limit switch is turned off, the solenoid valve (S1) switches to turn off the self-holding of the motor, and then the motor stops.In the "CLUTCH OFF" state, you can do this by turning the selecting switch (SS1) to "AIR OFF." When turned to "AIR OFF," the solenoid valve switches, the air supply to the TGK series stops, the TGK series turns to "CLUTCH OFF," and the motor continues to rotate, but the driving force is not transferred to the driven side.

This system is for simple torque adjustment.You can adjust the torque within an air pressure range of 0.14 to 0.55 MPa.

PB１ Motor start button

PB２ Motor stop button

SS１ Selecting switch

SS２ Pressure switch

S１ Solenoid valve

85

TGK Series

Shock Guard1 2 4 6 3 8 9

5 2 3 7 7

Air intake

Size　Ｗ 250mm、Ｈ 200mm、Ｄ 90mm


Motor startPB1 Motor stop

PB2 R2 R1

T1 S1

Pressure switchPS1

R2 OX

Selecting switchSS1 S2

Limit switch

MS1

OX

Selecting switchSS1

R1

MS1

T1

R1

R2

Motor start

タイマー

Solenoid valve 1

Pressure switch

Solenoid valve 2

Air device configuration

Electrical diagram

Dual air control system

Part number Device name Referential model number（SMC）

1 Air fi lter AF20-02

2 Regulator AR20-02

3 Pressure gauge G36-02

4 Spacer with bracket Y200T

5 Spacer Y200

6 T type spacer Y210-02

7 3-port solenoid valve VT307-1G-02

8 Silencer AN20-02

9 Pressure switch IS3000-02

Air intake


Electrical diagram

Basic operationSelecting switch (SS1) is set to "AIR ON."Press the motor start button (PB1). The motor starts and the TGK series returns to the "CLUTCH ON" state. The limit switch is turned on, the self-holding of the motor is completed, and the motor continues to rotate even if you release the motor start button (PB1)Note) If the pressure switch is off, the motor does not rotate even if

you press the motor start button (PB1).

The sensor target of the TGK series moves simultaneously when an overload occurs, and the amount of movement is detected by a limit switch or a similar device.If the limit switch is turned off, the solenoid valve (S1) switches to turn off the self-holding of the motor, and then the motor stops.In the "CLUTCH OFF" state, you can do this by turning the selecting switch (SS1) to "AIR OFF." When turned to "AIR OFF," the solenoid valve switches, the air supply to the TGK series stops, the TGK series turns to "CLUTCH OFF," and the motor continues to rotate, but the driving force is not transferred to the driven side.

PB１ Motor start button

PB２ Motor stop button

SS１ Selecting switch

SS２ Pressure switch

S１ Solenoid valve １

S２ Solenoid valve ２

This system uses two regulators. At the time of startup, the regulator set to the higher pressure feeds air to the TGK series. A timer is used to count several seconds (1 to 10 seconds), and then the regulator set to the lower pressure is switched in order to reset the torque to the optimal value. Such a system enables various types of automatic torque adjustments during operation.

86

©2016 U.S. Tsubaki Power Transmission, LLCAll Rights Reserved. Printed in U.S.A.

10/16 Rev. 2 L14024

®

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Documents

Overload Protection and Safety Devicestsubaki.ca/pdf/library/L14007_SAFCON_revised.pdf · Tsubaki®: The choice for overload protection and safety The truth is, any machine can break