| Bearing model | Boundary Dimensions（mm） | Speed Rating(ipm) | Load Rating （kn） | Bearing type | ||||
|---|---|---|---|---|---|---|---|---|
| d | D | B | Grease lubrication | Oil lubrication | Dynamic Cr | Static Cor | ||
| W 63803-2RS1 | 17 | 26 | 7 | 1.78 | 1.27 | 16000 | Deep groove ball bearing | |
| W 63803-2RZ | 17 | 26 | 7 | 1.78 | 1.27 | 56000 | 28000 | Deep groove ball bearing |
| W 63803-2Z | 17 | 26 | 7 | 1.78 | 1.27 | 56000 | 28000 | Deep groove ball bearing |
| W 63804 | 20 | 32 | 10 | 3.12 | 2.08 | 48000 | 30000 | Deep groove ball bearing |
| W 63804 R | 20 | 32 | 10 | 3.12 | 2.08 | 48000 | 30000 | Deep groove ball bearing |
| W 63804 R-2Z | 20 | 32 | 10 | 3.12 | 2.08 | 48000 | 24000 | Deep groove ball bearing |
| W 63804-2RS1 | 20 | 32 | 10 | 3.12 | 2.08 | 13000 | Deep groove ball bearing | |
| W 63804-2RZ | 20 | 32 | 10 | 3.12 | 2.08 | 48000 | 24000 | Deep groove ball bearing |
| W 63804-2Z | 20 | 32 | 10 | 3.12 | 2.08 | 48000 | 24000 | Deep groove ball bearing |
| W 63805 | 25 | 37 | 10 | 3.38 | 2.5 | 38000 | 24000 | Deep groove ball bearing |
| W 63805 R | 25 | 37 | 10 | 3.38 | 2.5 | 38000 | 24000 | Deep groove ball bearing |
| W 63805 R-2Z | 25 | 37 | 10 | 3.38 | 2.5 | 38000 | 19000 | Deep groove ball bearing |
| W 63805-2RS1 | 25 | 37 | 10 | 3.38 | 2.5 | 11000 | Deep groove ball bearing | |
| W 63805-2RZ | 25 | 37 | 10 | 3.38 | 2.5 | 38000 | 19000 | Deep groove ball bearing |
| W 63805-2Z | 25 | 37 | 10 | 3.38 | 2.5 | 38000 | 19000 | Deep groove ball bearing |
| W 63806 | 30 | 42 | 10 | 3.58 | 2.9 | 34000 | 20000 | Deep groove ball bearing |
| W 63806 R | 30 | 42 | 10 | 3.58 | 2.9 | 34000 | 20000 | Deep groove ball bearing |
| W 63806 R-2Z | 30 | 42 | 10 | 3.58 | 2.9 | 34000 | 17000 | Deep groove ball bearing |
| W 63806-2RS1 | 30 | 42 | 10 | 3.58 | 2.9 | 9500 | Deep groove ball bearing | |
| W 63806-2RZ | 30 | 42 | 10 | 3.58 | 2.9 | 34000 | 17000 | Deep groove ball bearing |
| W 63806-2Z | 30 | 42 | 10 | 3.58 | 2.9 | 34000 | 17000 | Deep groove ball bearing |
| W 638-2RS1 | 8 | 28 | 9 | 3.97 | 1.96 | 19000 | Deep groove ball bearing | |
| W 638-2RZ | 8 | 28 | 9 | 3.97 | 1.96 | 67000 | 32000 | Deep groove ball bearing |
| W 638-2Z | 8 | 28 | 9 | 3.97 | 1.96 | 67000 | 32000 | Deep groove ball bearing |
| W 639 | 9 | 30 | 10 | 4.36 | 2.32 | 60000 | 36000 | Deep groove ball bearing |
| W 639/1.5 R-2Z | 1.5 | 5 | 2.6 | 0.135 | 0.036 | 200000 | 100000 | Deep groove ball bearing |
| W 639/1.5-2Z | 1.5 | 5 | 2.6 | 0.135 | 0.036 | 200000 | 100000 | Deep groove ball bearing |
| W 639/2 R-2Z | 2 | 6 | 3 | 0.19 | 0.051 | 180000 | 90000 | Deep groove ball bearing |
| W 639/2.5 R-2ZS | 2.5 | 7 | 3.5 | 0.221 | 0.067 | 160000 | 80000 | Deep groove ball bearing |
| W 639/2.5-2ZS | 2.5 | 7 | 3.5 | 0.221 | 0.067 | 160000 | 80000 | Deep groove ball bearing |
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