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UKC 12 ZZ Sprag Types of One Way Clutch Bearings
The Uk..zz series is a freewheel incorporating a 62..series bearing.
the self-centring freewheels are already grease-lubricated and come with dust-proof protectio
The UKC..ZZ model is equipped with a keyway on the inner race and should be fitted on k6 tolerance shafts. Seat fitting must be carried out with n6 keying tolerance.
The UKCC..ZZ model is equipped with a keyway on the inner and outer race, the tolerances are h6 for the shaft and h6 for the rigid seat.
Product name | Types of One Way Clutch Bearings |
Model | UKC 12 ZZ |
Material | GCr15 |
Inner diameter | 12mm |
Outer diameter | 32mm |
Thickness | 10mm |
Torque capacity | 9.3Nm |
Weight | 0.04kg |
Structure | Sprag type |
Application | Textile machine, fans, ventilators, printing machine |
Package | Tube / Carton Box, Pallet |
Payment terms | TT. L/C, D/A,D/P,Western Union |
Delivery time | 2-4 days for the sample, 7 days for big order |
Catalogue of Types of One Way Clutch Bearings for your choice
Tips: All the UK versions are equippede with " formchromed" sprags. This process increases several times the overrunning life time.

| Type | Size | Bearing series | Bearing loads | Weight | Drag torque | |||||||
| dynamic | static | |||||||||||
| UKC...ZZ | d | TKN1) | nmax | D | L | b | t | C | C0 | TR | ||
| [mm] | [Nm] | [min-1] | [mm] | [mm] | [mm] | [mm] | [kN] | [kN] | [kg] | [Ncm] | ||
| 12 | 6201 | 9.3 | 10000 | 32 | 10 | 6.1 | 2.77 | 0.04 | 0.7 | |||
| 15 | 6202 | 17 | 8400 | 35 | 11 | 7.4 | 3.42 | 0.06 | 0.9 | |||
| 17 | 6203 | 30 | 7350 | 40 | 12 | 7.9 | 3.8 | 0.07 | 1.1 | |||
| 20 | 6204 | 50 | 6000 | 47 | 14 | 9.4 | 4.46 | 0.11 | 1.3 | |||
| 25 | 6205 | 85 | 5200 | 52 | 15 | 10.7 | 5.46 | 0.14 | 2 | |||
| 30 | 6206 | 138 | 4200 | 62 | 16 | 11.7 | 6.45 | 0.21 | 4.4 | |||
| 35 | 6207 | 175 | 3600 | 72 | 17 | 12.6 | 7.28 | 0.3 | 5.8 | |||
| 40 | – | 325 | 3000 | 80 | 22 | 15.54 | 12.25 | 0.5 | 7 | |||
| UKCC...ZZ | 15 | 6202 | 17 | 8400 | 35 | 11 | 2 | 0.6 | 7.4 | 3.42 | 0.06 | 0.9 |
| 17 | 6203 | 30 | 7350 | 40 | 12 | 2 | 1 | 7.9 | 3.8 | 0.07 | 1.1 | |
| 20 | 6204 | 50 | 6000 | 47 | 14 | 3 | 1.5 | 9.4 | 4.46 | 0.11 | 1.3 | |
| 25 | 6205 | 85 | 5200 | 52 | 15 | 6 | 2 | 10.7 | 5.46 | 0.14 | 2 | |
| 30 | 6206 | 138 | 4200 | 62 | 16 | 6 | 2 | 11.7 | 6.45 | 0.21 | 4.4 | |
| 35 | 6207 | 175 | 3600 | 72 | 17 | 8 | 2.5 | 12.6 | 7.28 | 0.3 | 5.8 | |
| 40 | – | 325 | 3000 | 80 | 22 | 10 | 3 | 15.54 | 12.25 | 0.5 | 7 | |
| 45 | _ | 218 | 1600 | 85 | 19 | 12 | 2.5 | 18.36 | 15.35 | 0.44 | 9.3 | |
| 50 | _ | 230 | 1500 | 90 | 20 | 12 | 2.5 | 19.53 | 17.68 | 0.49 | ||
| UKC...2RS | 12 | – | 9.3 | 10000 | 32 | 14 | 6.1 | 2.77 | 0.05 | 3 | ||
| 15 | – | 17 | 8400 | 35 | 16 | 7.4 | 3.42 | 0.07 | 4 | |||
| 17 | – | 30 | 7350 | 40 | 17 | 7.9 | 3.8 | 0.09 | 5.6 | |||
| 20 | – | 50 | 6000 | 47 | 19 | 9.4 | 4.46 | 0.145 | 6 | |||
| 25 | – | 85 | 5200 | 52 | 20 | 10.7 | 5.46 | 0.175 | 6 | |||
| 30 | – | 138 | 4200 | 62 | 21 | 11.7 | 6.45 | 0.27 | 7.5 | |||
| 35 | – | 175 | 3600 | 72 | 22 | 12.6 | 7.28 | 0.4 | 8.2 | |||
| 40 | – | 325 | 3000 | 80 | 27 | 15.54 | 12.25 | 0.6 | 10 | |||





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.


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: How do you pack the goods?
Q: Can i get the samples from you?
A: It is highly encouraged to ask for the samples for quality check.
Q: Can you promise to deliver the goods in time?
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