Products Power Transmission Products

  • Shock Guard®

TGB Shock Guard®

Standard

Capacity N·m Repeat working torque precision Backlash Reset Method
0.3 to 7150 ±10% Small Automatic

1.Features

  • The trip accuracy is within ±10%
  • Extended our lineup with 58 models in different sizes.
  • Automatically resets just by rotating the drive side
  • The unique combination of ball and pocket configuration only engages in one position
  • With the non-contact type TG sensor detecting the overload, the motor can be stopped and an alarm signal can be sent (optional).
  • The TGB coupling type is also available

2.Structure

TGB08 to 16

TGB08 to 16 Structure

TGB20 to 130

TGB20 to 130 Structure

TGB70 and above have a slightly different construction.

3.Principle of operation

Animation showing the operating principle of the TGB Series

Example for TGB08 - 16

TGB08 to 16 Animation GIF
During normal operation (engagement)
Torque is transmitted through several balls. The balls are unevenly arranged so that they engage in only one position. Balls are held and pressurized so that there are no gaps, and their engagement with the pocket creates no backlash.
Torque is transmitted from the center flange (pocket) to the ball to the hub (pocket) to the shaft. (Or the reverse.)
During overload (trip)
When the device trips from an overload, the ball pops out of the center flange pocket and slides between the plate and center flange.

Example for TGB20 - 50

TGB20 to 50 Animation GIF
During normal operation (engagement)
Torque is transmitted through several balls. The balls are unevenly arranged so that they engage in only one position.
Torque is transmitted from the center flange (pocket) to the ball to the hub (pocket) to the shaft. (Or the reverse.)
During overload (trip)
When the device trips from an overload, the ball pops out of the hub pocket and rotates between the plate and hub. The rotating portion when tripped is received by bearings so it rotates lightly and smoothly.

TGB70 - 130 use the same operating principle.

4.Model Numbering Example - TGB Series

TGB 30 - H - T H 30 J D2 - N147
Series Size Spring strength Shock Guard side Shaft bore tolerance Shaft bore diameter (1mm units) Keyway tolerance Set screw positioning Set torque value

Size

  • 08
  • 12
  • 16
  • 20
  • 30
  • 50
  • 70
  • 90
  • 110
  • 130

Spring strength

  • L: Weak
  • M: Medium
  • H: Strong
  • *The spring type differs depending on size.

Shaft bore tolerance

  • F: F7
  • G: G7
  • H: H7
  • J: JS7
  • P: P7
  • M: M7
  • N: N7
  • K: K7
  • R: R7
  • *TGB08 to 16: Grade 8

Keyway tolerance

  • J: New JIS Js9
  • P: New JIS P9
  • F: Old JIS F7
  • E: Old JIS E9

Set screw positioning (Position from adjusting nut side)

  • D0 Set screw positioning fig.
  • D1 Set screw positioning fig.
  • D2 (Standard) Set screw positioning fig.
  • D3 Set screw positioning fig.
  • D4 Set screw positioning fig.
  • D5 Set screw positioning fig.
  • D6 Set screw positioning fig.
  • D7 Set screw positioning fig.
  • D8 Set screw positioning fig.

Set torque value

  • The torque setting is shown in N·m units.
  • *Shown to one decimal place when the torque setting is less than 10N·m.
  • We can provide only D2 for TGB08 to TGB16
  • Code T indicating Shock Guard side is used for no-coupling types as well.

5.Model Numbering Example - TGB Series Coupling Type

TGB 50 - L C - T H35JD2 X C H45ED2 - N98
Series Size Spring strength Type Shock Guard side Same notation as no-coupling type Coupling side Same notation as no-coupling type Set torque value

If the shaft bore is a pilot bore, the code for the Shock Guard side will be TR and the code for the coupling side will be CR.

Size

  • 08
  • 12
  • 16
  • 20
  • 30
  • 50
  • 70
  • 90
  • 110
  • 130

Spring strength

  • L: Weak
  • M: Medium
  • H: Strong
  • *The spring type differs depending on size.

Shaft bore tolerance

  • F: F7
  • G: G7
  • H: H7
  • J: JS7
  • P: P7
  • M: M7
  • N: N7
  • K: K7
  • R: R7
  • *The shaft bore tolerances are all Grade 7.

Keyway tolerance

  • J: New JIS Js9
  • P: New JIS P9
  • F: Old JIS F7
  • E: Old JIS E9

Set screw positioning *

  • D0 Set screw positioning fig.
  • D1 Set screw positioning fig.
  • D2 (Standard) Set screw positioning fig.
  • D3 Set screw positioning fig.
  • D4 Set screw positioning fig.
  • D5 Set screw positioning fig.
  • D6 Set screw positioning fig.
  • D7 Set screw positioning fig.
  • D8 Set screw positioning fig.

Set torque value

  • The torque setting is shown in N·m units.
  • *Shown to one decimal place when the torque setting is less than 10N·m.
  • Note: The set screw position of the Shock Guard side is as seen from the adjusting nut side, and the set screw position of the coupling side is as seen from the hub side.