Power Transmission Products Power Transmission Products

  • Mechanical Protectors

Torque Keeper

Slipping clutch and brake capable of continuous slipping, with the friction facings made of fine chemicals.

トルクキーパー

In addition to the anti-wear design, features the torque indicator and light-weight body for ease of use.

RoHS compliant

Standard

Capacity N·m Models
0.59 to 650 5 Models

1.Features

Stable slipping torque & wide torque range

Smoothly transmits slipping torque due to the small torque fluctuations. A wide range of torque to choose from for each size.

Accurate torque repeatability

Even with high-frequency, repeated slipping torque, stable torque is transmitted consistently.

Long Service Life

Using special fine chemical fibers for the friction facings, longer life can be expected than other types of brake lining.

Lightweight & compact

Light in weight with the aluminum flange. Compared with other brake mechanisms, extremely compact and helps you with space-savings.

2.Structure

TFK20, TFK25, TFK35

TFK20,TFK25,TFK35構造図

TFK50, TFK70

TFK50, TFK70構造

3.Reference Number System Torque Keeper

TFK 35 - 1 - T H 25 J D1 - N25
(1) Series (2) Size (3) Number of disc springs (4) Torque Keeper side (5) Shaft bore tolerance (6) Shaft bore diameter (1mm units) (7) Keyway tolerance (8) Set screw positioning (9) Set torque value
  1. (1) Series
  2. (2) Size
  3. (3) Number of disc springs
  4. (4) Torque Keeper side
  5. (5) Shaft bore tolerance
  6. (6) Shaft bore diameter (1mm units)
  7. (7) Keyway tolerance
  8. (8) Set screw positioning
  9. (9) Set torque value

Size

  • 20
  • 25
  • 35
  • 50
  • 70

Number of disc springs

  • 1L: Weak
  • 1: 1pc
  • 2: 2pc

Shaft bore tolerance

  • F: F7
  • G: G7
  • H: H7
  • J: JS7
  • P: P7
  • M: M7
  • N: N7
  • K: K7
  • R: R7

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)

  • D1 (Standard) Set screw positioning fig.
  • D2 Set screw positioning fig.
  • D3 Set screw positioning fig.
  • D4 Set screw positioning fig.
  • D5 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 D0 for TFK200, and D1, D3, D4 for TFK250 to 700.
  • The code T indicating Torque Keeper side will be shown for no-coupling type as well after the change.

View/Download Data

Catalog/Instruction Manual

Related Content

4.Reference Number System Torque Keeper Coupling Type

TFK 25 - 1 C - T H20JD1 X C H20J D5 - N16
(1) Series (2) Size (3) Number of disc springs (4) Type (5) Torque Keeper side (6) Same notation as no-coupling type (7) Coupling side (8) Same notation as no-coupling type (9) Set screw positioning * (10) Set torque value
  1. (1) Series
  2. (2) Size
  3. (3) Number of disc springs
  4. (4) Type
  5. (5) Torque Keeper side
  6. (6) Same notation as no-coupling type
  7. (7) Coupling side
  8. (8) Same notation as no-coupling type
  9. (9) Set screw positioning *
  10. (10) Set torque value
  • If the shaft bore is a pilot bore, the code for the Torque Keeper side will be TR and the code for the coupling side will be CR.

Size

  • 200
  • 250
  • 350
  • 500
  • 700
  • 10
  • 14
  • 20

Number of disc springs

  • [TFK200 to TFK700]
    1L, 1, 2
  • [TFK10]
    16, 24
  • [TFK14]
    10, 15
  • [TFK20]
    6, 12

Shaft bore tolerance

  • F: F7
  • G: G7
  • H: H7
  • J: JS7
  • P: P7
  • M: M7
  • N: N7
  • K: K7
  • R: R7

Keyway tolerance

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

Set screw positioning (Coupling side) *

  • D0 Set screw positioning fig.
  • D1 Set screw positioning fig.
  • D2 Set screw positioning fig.
  • D3 Set screw positioning fig.
  • D4 Set screw positioning fig.
  • D5 (Standard) 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 Torque Keeper 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.

Model numbers for Shock Guards changed on April 2, 2018.

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