Changzhou Suma Precision Machinery Co., Ltd
| Type | BB Series |
| Precision Rating | P0, P6 |
| Seals Type | sealed |
| Material | GCr15 |
| Outer diameter | 52 mm |
| Bore size | 25 mm |
| Torque Capacity | 78 Nm |
| Max Overrunning (inner) | 2500 r/min |
| Max Overrunning (outer) | 1400 r/min |
| Drag Torque | 0.017 N*m |
| Operating Temperature | -30°C to +100°C |
| Weight | 150 N |
| Bearing Load (Cr) | 10700 N |
| Bearing Load (Cor) | 6300 N |
| Keyway Dimensions | 8x5x15 (inner), 6x4x15 (outer) |
| Brand Name | SUMA or OEM |
| Model Number | BB 25-2K-K |
| Place of Origin | Jiangsu, China |
View Detail Information
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Product Specification
| Type | BB Series | Precision Rating | P0, P6 |
| Seals Type | sealed | Material | GCr15 |
| Outer diameter | 52 mm | Bore size | 25 mm |
| Torque Capacity | 78 Nm | Max Overrunning (inner) | 2500 r/min |
| Max Overrunning (outer) | 1400 r/min | Drag Torque | 0.017 N*m |
| Operating Temperature | -30°C to +100°C | Weight | 150 N |
| Bearing Load (Cr) | 10700 N | Bearing Load (Cor) | 6300 N |
| Keyway Dimensions | 8x5x15 (inner), 6x4x15 (outer) | Brand Name | SUMA or OEM |
| Model Number | BB 25-2K-K | Place of Origin | Jiangsu, China |
| High Light | 25mm one way clutch bearing ，52mm OD clutch bearing ，BB Series one way bearing | ||
One Way Clutch Bearing BB 25-2K-K Cam Clutch Industrial Bearing
BB Series
Data Sheet
| Item | BB 2K-K |
| Material | GCr15 |
| Outer dia. | 52 mm |
| Bore size | 25 mm |
| Torque Capacity | 78 Nm |
| Max. Overrunning(inner race) | 2500 r/min |
| Max. Overrunning(outer race) | 1400 r/min |
| Port | Shanghai;Ningbo |
| Delivery time | 10-15 days |
Feature
General information of Installation and usage for BB series Cam Clutch
1. BB series Cam Clutch is designed for press fit installation.
2. BB-1K-K and BB-2GD 1K-K 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 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).
Dimensions and Capacities Dimensions in mm
| odel | Torque | Max. Overrunning | Drag Torque (N·m) | A | B | C | D | r | Weight (N) | Bearing Loads | ||||||
| Inner Race | Outer Race | BB | BB-2GD | BB | BB-2GD | BB | BB-2GD | BB | BB-2GD | Cr | Cor | |||||
| N·m | r/min | r/min | N | N | ||||||||||||
| BB15 | 29 | 3600 | 2000 | 0.01 | 0.04 | 11 | 16 | 35 | 15 | 32.6 | 32.45 | 0.6 | 50 | 70 | 5950 | 3230 |
| BB17 | 43 | 3500 | 1900 | 0.01 | 0.05 | 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 | 120 | 150 | 8500 | 4900 |
| BB25 | 78 | 2500 | 1400 | 0.017 | 0.055 | 15 | 20 | 52 | 25 | 47.1 | 47.05 | 1 | 150 | 200 | 10700 | 6300 |
| BB30 | 140 | 2000 | 1100 | 0.03 | 0.058 | 16 | 21 | 62 | 30 | 56.6 | 55.6 | 1 | 230 | 280 | 11900 | 7900 |
| BB35 | 173 | 1800 | 1000 | 0.034 | 0.06 | 17 | 22 | 72 | 35 | 64 | 64.6 | 1.1 | 320 | 410 | 13500 | 9700 |
| BB40 | 260 | 1800 | 900 | 0.04 | 0.08 | 22 | 27 | 80 | 40 | 71 | 71.6 | 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 Keys and Keyways
| Model | b2js10 | t1 | t2 | b1js9 | t | Inner race | Outer race | |
| 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 | |||
Note: The dimension of t2 for BB25-1K-K, BB25-2K-K and BB25-2GD 1K-K is 0.5 mm shallow compared to
DIN 6885. 3.
Process the keyway on the shaft 0.5 mm deeply to use DIN standard key.
All other models are dimensionally interchangeable with competitors.
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.
Changzhou Suma Precision Machinery Co., Ltd(Changzhou Tianniu Clutch Factory)is a manufacturer specialized in Producing Various cam clutch, one way bearing, one way clutch, backstop clutch, overrunning clutch and other bearings with high technology.
We are following "Best Quality, Best Price, Fast Delivery, Best Serves" to make all of our old and new customers satisfied.
Our Advantages
1. Advanced producing equipment.
2. Strict requirement for the raw material
3. Complete&perfect process flow
4. Good quality of each batch of the product
5. Different grades of price for different quality
Pre-sale service:
We will delivery the goods in 10 days after your order is confirmed.
After sale service:
Our factory provide technical assistance to support every doubt during usage and maintenance.
Q: Why do we choose your company?
A: We always insist quality first. We have our bearing factory, therefore we have advantage in quality control and price of one way clutch bearing.
Q:What is the delivery time?
A: Most of the bearing we have stock. For small quantity, we will arrange delivery within 15 days.
Q: What is your payment term?
A: Our payment term include L/C, T/T, Western Union, Paypal etc.
Q: Can you send bearing samples first?
A: Yes, we can send bearing samples of one way clutch bearing to check quality first.
If you have any needs, pls contact me at any time!
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2005
Total Annual:
1000000-2000000
Employee Number:
50~51
Ecer Certification：
Verified Supplier
Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales . The main Catagories are : One Way Cl... Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales . The main Catagories are : One Way Cl...
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