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BB One way Freewheel Bearing Clutch
One way Freewheel Bearing Clutch
Product Detail

Product description:

1. BB series One way Freewheel Bearing Clutch is designed for press fit installation.

2. BB-1K-K and BB-2GD 1K-K One way Freewheel Bearing Clutch series have a keyway on the inner race. Keyways, except size 25 are manufactured to DIN 6885. 3, BB40-1K-K and BB40-2GD 1K-K are manufactured to DIN 6885. 1.

3. BB-2K-K series has a keyway on both the inner and outer race.

“-K” means keys shipped together with Cam Clutch.

4. Correct interference dimensions at the shaft and the housing must be maintained to obtain maximum bearing

and clutch performance.

5. Refer to the table on next page for tolerance of the shaft and housing for each series.

6. BB, BB-1K and BB-2K Clutches, bearing supported and delivered with grease have dust seal protection

against particles of 0.25mm and over, whereas BB-2GD and BB-2GD-1K clutches, 5mm wider than standard

BB series, have special lip seals for effective protection against any dust.

7. The arrow on the inner race shows the direction of inner race engaging.

8. To install the clutch, use a press tool of the appropriate diameter to apply even pressure over the entire face

of the inner and outer race.

9. Do not hammer or apply other shock to the clutch.

10. Make sure the housing has enough strength to withstand the pressure required for the press fitting installation

of the Clutch.

11. Operating temperature range: –30°C to +100°C (Consult us for the temperature that exceeds this range).


Mounting example:

Dimensions and Capacities:

Model

Torque
Capacity

Max. Overrunning

Drag Torque (N·m)

A



B



C

D



r

Weight (N)


Bearing Loads


Inner Race

Outer Race


BB
BB-1K-K
BB-2K-K


BB-2GD
BB-2GD 1K-K


BB
BB-1K-K
BB-2K-K


BB-2GD
BB-2GD 1K-K


BB
BB-1K-K
BB-2K-K


BB-2GD
BB-2GD 1K-K


BB
BB-1K-K
BB-2K-K


BB-2GD
BB-2GD 1K-K

Cr

Cor

N·m

r/min

r/min

N

N

BB15

29

3600

2000

0.010

0.040

11

16

35

15

32.6

32.45

0.6

50

70

5950

3230

BB17

43

3500

1900

0.010

0.050

12

17

40

17

36.1

36.45

0.6

80

100

7000

3700

BB20

61

3000

1600

0.014

0.055

14

19

47

20

41.7

42.35

1.0

120

150

8500

4900

BB25

78

2500

1400

0.017

0.055

15

20

52

25

47.1

47.05

1.0

150

200

10700

6300

BB30

140

2000

1100

0.030

0.058

16

21

62

30

56.6

55.60

1.0

230

280

11900

7900

BB35

173

1800

1000

0.034

0.060

17

22

72

35

64.0

64.60

1.1

320

410

13500

9700

BB40

260

1800

900

0.040

0.080

22

27

80

40

71.0

71.60

1.1

400

600

14500

11700

Note: Model No. marked on the inner race is only “K” for both “1K” and “2K”. (Example: the mark “BB25-K” for both

BB25-1K and BB25-2K)


Tolerance for Shaft and Housing:

Model

Shaft Dia.

Housing Dia.

BB15

BB15-2GD

15+0.023+0.012

35–0.012–0.028

BB17

BB17-2GD

17+0.023+0.012

40–0.012–0.028

BB20

BB20-2GD

20+0.028+0.015

47–0.012–0.028

BB25

BB25-2GD

25+0.028+0.015

52–0.014–0.033

BB30

BB30-2GD

30+0.028+0.015

62–0.014–0.033

BB35

BB35-2GD

35+0.033+0.017

72–0.014–0.033

BB40

BB40-2GD

40+0.033+0.017

80–0.014–0.033

Model

Shaft Dia.

Housing Dia.

BB15-1K-K

BB15-2GD 1K-K

15–0.008–0.028

35–0.012–0.028

BB17-1K-K

BB17-2GD 1K-K

17–0.008–0.028

40–0.012–0.028

BB20-1K-K

BB20-2GD 1K-K

20–0.010–0.031

47–0.012–0.028

BB25-1K-K

BB25-2GD 1K-K

25–0.010–0.031

52–0.014–0.033

BB30-1K-K

BB30-2GD 1K-K

30–0.010–0.031

62–0.014–0.033

BB35-1K-K

BB35-2GD 1K-K

35–0.012–0.037

72–0.014–0.033

BB40-1K-K

BB40-2GD 1K-K

40–0.012–0.037

80–0.014–0.033


Model

Shaft Dia.

Housing Dia.

BB15-2K-K

15–0.008–0.028

35–0.018–0.002

BB17-2K-K

17–0.008–0.028

40–0.018–0.002

BB20-2K-K

20–0.010–0.031

47–0.022–0.003

BB25-2K-K

25–0.010–0.031

52–0.022–0.003

BB30-2K-K

30–0.010–0.031

62–0.022–0.003

BB35-2K-K

35–0.012–0.037

72–0.025–0.006

BB40-2K-K

40–0.012–0.037

80–0.025–0.006

Dimensions of keyways and keys:

Model

b2js10

t1

t2

b1js9

t

Inner race
Key
b×h×length

Outer race
Key
b'× h' ×length

BB15-1K-K

BB15-2GD— 1K-K

5.0

1.9

1.2

BB15-2K-K

2.0

0.6

5x3x11

2x2x11

BB17-1K-K

BB17-2GD— 1K-K

5.0

1.9

1.2

BB17-2K-K

2.0

1

5x3x12

2x2x12

BB20-1K-K

BB20-2GD— 1K-K

6.0

2.5

1.6

BB20-2K-K

3.0

1.5

6x4x14

3x3x14

BB25-1K-K

BB25-2GD— 1K-K

8.0

3.6

1.5

BB25-2K-K

6.0

2

8x5x15

6x4x15

BB30-1K-K

BB30-2GD— 1K-K

8.0

3.1

2.0

BB30-2K-K

6.0

2

8x5x16

6x4x16

BB35-1K-K

BB35-2GD— 1K-K

10.0

3.7

2.4

BB35-2K-K

8.0

2.5

10x6x17

8x5x17

BB40-1K-K

BB40-2GD— 1K-K

12.0

5.0

3.3

BB40-2K-K

10.0

3

12x8x22

10x6x22



Lubrication:

1. Since grease is already applied before delivery, there is no need to apply grease before use.

2. If the clutch is used with an oil lubricant, the oil lubrication should be applied inside the unit always.

3. Do not use greases or lubricants with EP additives.


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