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[China]
Trade Verify
Address: No. 203, Gaotiantou, Liudao Industrial Park, Yaoguan Town, Wujin District, Changzhou City, Jiangsu Province
Contact name:Christina Liu
Changzhou TIANNIU Transmission Equipment Co., Ltd |
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Verified Suppliers
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One Way Cam Clutch Bearing BB Series Sprag Backstop Freewheel Clutch
Production introduction
1. BB series One way Freewheel Bearing Clutch is designed for press fit installation.
2. 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.
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-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.
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).
Products Parameters
Dimensions and Capacities:
| Model | Torque Capacity | Max. Overrunning | Drag Torque (N·m) | A | B | C | D | r | Weight (N) | Bearing Loads | ||||||
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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 |
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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 | |||
