SKF deep groove ball bearing
Various part numbers in stock, welcome inquiry. Fast shipment within 2-3 working days.

| Designation | Principal dimensions | Basic loadRatings | SpeedRatings | ||||
| dynamic | static | Reference speed | Limiting speed | ||||
| d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | [r/min] | [r/min] | |
| W638/3-2RS1 | 3 | 7 | 3 | 0.178 | 0.057 | 45 000 | |
| W638/3-2Z | 3 | 7 | 3 | 0.178 | 0.057 | 160 000 | 80 000 |
| W638/4R-2RS1 | 4 | 9 | 4 | 0.364 | 0.114 | 40 000 | |
| W638/4R-2Z | 4 | 9 | 4 | 0.364 | 0.114 | 140 000 | 70 000 |
| W638/4X-2RS1 | 4 | 10 | 4 | 0.553 | 0.245 | 36 000 | |
| W638/4X-2Z | 4 | 10 | 4 | 0.553 | 0.245 | 130 000 | 63 000 |
| W638/4-2RS1 | 4 | 9 | 4 | 0.364 | 0.114 | 40 000 | |
| W638/4-2Z | 4 | 9 | 4 | 0.364 | 0.114 | 140 000 | 70 000 |
| W638/5R-2RS1 | 5 | 11 | 5 | 0.403 | 0.143 | 34 000 | |
| W638/5R-2Z | 5 | 11 | 5 | 0.403 | 0.143 | 120 000 | 60 000 |
| W638/5-2RS1 | 5 | 11 | 5 | 0.403 | 0.143 | 34 000 | |
| W638/5-2Z | 5 | 11 | 5 | 0.403 | 0.143 | 120 000 | 60 000 |
| W638/8R-2Z | 8 | 16 | 6 | 0.715 | 0.3 | 90 000 | 45 000 |
| W638/8-2Z | 8 | 16 | 6 | 0.715 | 0.3 | 90 000 | 45 000 |
| W638/9-2Z | 9 | 17 | 6 | 0.761 | 0.335 | 85 000 | 43 000 |
| W63800R-2Z | 10 | 19 | 7 | 1.48 | 0.83 | 80 000 | 38 000 |
| W63800-2Z | 10 | 19 | 7 | 1.48 | 0.83 | 80 000 | 38 000 |
| W63801-2RS1 | 12 | 21 | 7 | 1.51 | 0.9 | 20 000 | |
| W639 | 9 | 30 | 10 | 4.36 | 2.32 | 60 000 | 36 000 |
| W639-2RS1 | 9 | 30 | 10 | 4.36 | 2.32 | 16 000 | |
| W639-2Z | 9 | 30 | 10 | 4.36 | 2.32 | 60 000 | 30 000 |
| W639/1.5R-2Z | 1.5 | 5 | 2.6 | 0.135 | 0.036 | 200 000 | 100 000 |
| W639/2R-2Z | 2 | 6 | 3 | 0.19 | 0.051 | 180 000 | 90 000 |
| W639/2-2Z | 2 | 6 | 3 | 0.19 | 0.051 | 180 000 | 90 000 |
| W639/3R-2RS1 | 3 | 8 | 4 | 0.319 | 0.09 | 43 000 | |
| W639/3R-2Z | 3 | 8 | 4 | 0.319 | 0.09 | 150 000 | 75 000 |
| W639/3-2RS1 | 3 | 8 | 4 | 0.319 | 0.09 | 43 000 | |
| W639/3-2Z | 3 | 8 | 4 | 0.319 | 0.09 | 150 000 | 75 000 |
| WBB1-8700 | 1.2 | 4 | 1.8 | 0.062 | 0.016 | 220 000 | 140 000 |
| WBB1-8700-2Z | 1.2 | 4 | 2.5 | 0.062 | 0.016 | 220 000 | 110 000 |
WHCD Bearing Co.,Ltd is professional bearing supplier, engaged in bearing business with more than eighteen years, export to worldwide countries, as America, European, Middle-East, Southeast Asia …etc. with plenty long-term cooperation customers. WHCD Bearing company will provide professional and prompt solution for customers.Original Quality and Warranted, and Bearing experts team support customer service. Various bearing types for customer choose:

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