| Type No. | Metric Bore Size | UCFL201 up to UCFL212 |
| UCFL305 up to UCFL328 | ||
| Inch Bore Size | UCFL201-8 up to UCFL212-39 | |
| Housing | Plastic | White Color |
| Green Color | ||
| Black Color | ||
| Stainless Steel | Standard Duty, Concave Bottom | |
| Heavy Duty, Flat Bottom | ||
| Precision | ABEC-1, ABEC-3 | |
| Vibration & Noise | Z1, Z1V1, Z2V1, Z2V2 | |
| Clearance | C0, C1,C2,C3,C4 | |
| Fitness of Bearing & Housing | H7 > J7 > K7 | |
| Working Temp. | -20 ºC up to 120 ºC (high working temp is acceptable) | |
| Lubrication | Chinese Greatwall#2, SRL,PS2, etc.. | |