NTN
Deep groove ball bearings 63/28NR
Bearing NTN 63/28NR, Ø28×68×18 mm. Request a quote — worldwide shipping.
Type Deep groove ball bearings
Dimensions
Ø 28 × 68 × 18 mm
d28Bore Ø (mm)
×
D68Outer Ø (mm)
×
B18Width (mm)
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In stock
Technical specifications
| Brand | NTN |
| d - Internal diameter | 28 mm |
| D - External diameter | 68 mm |
| B - Bearing/Inner ring width | 18 mm |
| a min - Min position Groove | 3,07 mm |
| a max - Max position groove | 3,28 mm |
| rs - Min fillet radius | 1,1 mm |
| rNs - Min fillet radius | 0,5 mm |
| D3 - Max bottom groove diameter | 64,82 mm |
| b min - Min groove width | 1,9 mm |
| b max - Max groove width | 2,2 mm |
| r0 max - Max bottom groove radius | 0,6 mm |
| D4 max - Max outer diameter of assembled stop ring | 74,6 mm |
| f - Stop ring thickness | 1,7 mm |
| Snap ring reference | R68 |
| Radial clearance class | CN |
| Mass | 0,284 kg |
| C - Dynamic load | 29600000 mN |
| C0 - Static load | 14000000 mN |
| Cu - Fatigue limit load | 1100000 mN |
| f0 - Coefficient | 12.4 |
| N lim - Oil lubrication limit speed | 78000 °/s |
| N lim - Grease lubrication limit speed | 66000 °/s |
| Tmin - Min operating temperature | 233,15 °K |
| Tmax - Max operating temperature | 393,15 °K |
| da min - Min shoulder diameter IR | 34,5 mm |
| Da max - Max shoulder diameter OR | 61,5 mm |
| ra max - Max shaft & housing fillet radius | 1 mm |
| rNa max - Max fillet radius on segment side | 0,5 mm |
| Ca min - Mini segment position | 4,77 mm |
| Ca max - Max segment position | 4,98 mm |
| Db min - Min stop ring position diameter | 76 mm |
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NTN 63/28NR