One way Bearings, also know as Freewheels are directional couplings, which means that the driving member rotates the driven member in one direction, while automatically disengaging itself from the driven member when the direction of rotation is reversed, the two operating states are: 

1. Transmission of torque.
2. Idling (overrunning).

The freewheels may be employed as:

1. Overrunning clutch, the freewheel disengages automatically when the driven member rotates faster than the driving member.
2. Indexing clutch, the freewheel allows the conversion of reciprocating motion into rotational movement.
3. Backstop, the freewheel allows rotation in one direction only, it overruns continuously during operation, the freewheel prevents reverse rotation if the drive is disconnected.

Two basic versions are available, the overrunning speed determines the selection of the appropriate model:

1. Grip-roller freewheels for low to medium overrunning speeds and for indexing clutches.
2. Sprag freewheels for high overrunning speeds and for backstops.

Bearing model

Overall dimension(mm)

Rated
torsion Tkn(N.m)

Weight (KG)

Application

DTB

GERMANY

JAPAN

d

D

B

OW608

CSK8

8

22

9

2.5

0.015

Motor

Washing
machine

Printing machinery

Electric
roller

Textile machinery

OW6201

CSK12

12

32

10

7.5

0.04

OW6202

CSK15

BB15

15

35

11

13.5

0.05

OW6203

CSK17

BB17

17

40

12

24.5

0.07

OW6204

CSK20

BB20

20

47

14

40

0.11

OW6205

CSK25

BB25

25

52

15

68

0.14

OW6206

CSK30

BB30

30

62

16

110

0.21

OW6207

CSK35

BB35

35

72

17

140

0.30

OW6208

CSK40

BB40

40

80

22

260

0.50

OW6205-2RS

25

52

15

60

0.14

OW6006-2RS

30

55

14

60

B205

23.622

52

25

80

0.45

UF20B

20

60

20

120

Bearing
model

Overall
dimension(mm)

Bearing load

Rated torsion
Tkn(N.m)

Weight(KG)

Application

d

D

B

C[Kn]

Co[Kn]

CSK8 2RS

8

22

9

3.28

0.86

2.5

0.015

electric motor car

washing machine

print machinery

electronic cylinder

fabrics machine

CSK12 2RS

12

32

14

6.1

2.77

7.5

0.05

CSK15 2RS

15

35

16

7.4

3.42

13.5

0.07

CSK17 2RS

17

40

17

7.9

3.8

24.5

0.09

CSK20 2RS

20

47

19

9.4

4.46

40

0.145

CSK25 2RS

25

52

20

10.7

5.46

68

0.175

CSK30 2RS

30

62

21

11.7

6.45

110

0.270

CSK35 2RS

35

72

22

12.6

7.28

140

0.4

CSK40 2RS

40

80

27

15.54

12.25

260

0.6ou