Products Power Transmission Products

  • Chain Tensioners/Idler Sprockets

FR Idler Sprockets

Bearing units with hubs provide stable rotation.

We offer a wide variety of idler sprockets to choose from. Can be used as an idler of CT-TH Type Chain Tensioners.

FR Idler Sprockets

1.Application Examples

Takes up slack on long center distances.

Application Examples fig.

Functions as a center idler on drives with multiple shafts.

Application Examples fig.

For when chain contact angle is insufficient.

Application Examples fig.

2.Specifications

Bearing Series
  • Ball Bearing Series (B)
  • Oilless Bush Series (L)
Surface Treatment
  • No plating (N)
  • Electroless nickel plating (K)

3.Model Numbering Example

FR B - RS40 - 15T - N
(1) (2) (3) (4) (5)
  1. (1) FR Idler Sprockets
  2. (2) B: Ball Bearing Series, L: Oilless Bush Series
  3. (3) Chain number
  4. (4) No. of teeth
  5. (5) N: No plating, K: Electroless nickel plating

4. Applicable chain number and number of teeth

All hardened teeth specifications.

Chain no./Teeth 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
RS35
RS40
RS50
RS60
RS80

5. Options - Idler Bolt Set -

Idler bolt set models

アイドラボルトセット写真

Model no. Size L (mm)
FR-PS45 M12 45
FR-PS55 55
FR-PS70 70
Accessories
  • One (1) bolt, one (1) nut, three (3) flat washers
  • One (1) spring washer (surface treatment: trivalent chromate)

Installation example of Idler bolts (Ball Bearing Series)

Installation example of Idler bolts fig.