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NTN 7903UG/GMP4 Super Pricision Single Row Angular Contact Ball Bearing 17x30x7mm
Equivalent to: 7903UG/GMP4U3G
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| d - Inside diameter | = | 17mm |
| D - Outside diameter | = | 30mm |
| B - Width | = | 7mm |
| d1 - Inner ring outside diameter | = | 21.3mm |
| d2 - Inner ring outside diameter | = | 20.3mm |
| D1 - Inner ring inside diameter | = | 25.7mm |
| D2 - Inner ring inside diameter | = | 27.7mm |
| a - Charge load application point | = | 10.3mm |
| Contact angle | = | 30 degrees |
| rs min - Minimum fillet radius | = | 0.3mm |
| r1s min - Minimum fillet radius | = | 0.15mm |
| Precision class | = | P4 |
| C - Dynamic load rating | = | 5.4 kN |
| C0 - Static load rating | = | 2.95 kN |
| Preload level | = | GM |
| Preload value | = | 127 N |
| N Lim - Oil limiting speed | = | 49800 tr/min |
| N Lim - Grease limiting speed | = | 36600 tr/min |
| da min - Inner ring minimum shoulder diameter | = | 19.5mm |
| Da max - Outer ring maximum shoulder diameter | = | 27.5mm |
| Db max - Outer ring maximum shoulder diameter | = | 28.8mm |
| r1a max - Maximum fillet radius | = | 0.15mm |
| ra max - Maximum shaft & housing fillet radius | = | 0.3mm |
| Tmin - Minimum operating temperature | = | -20 Deg C |
| Tmax - Maximum operating temperature | = | +120 Deg C |
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