250RN51 Single Row Cylindrical Roller Bearing 250x410x57mm
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Features
250RN51 Single Row Cylindrical Roller Bearing 250x410x57mm Size Chart (mm/inches) |
|---|
| Bearing number | 71918 ACB/P4AL |
| Size (mm) | 125x90x18 |
| Bore Diameter (mm) | 125 |
| Outer Diameter (mm) | 90 |
| Width (mm) | 18 |
| d | 90 mm |
| D | 125 mm |
| B | 18 mm |
| d1 | 103 mm |
| d2 | 101.4 mm |
| D2 | 115 mm |
| b | 2.2 mm |
| C1 | 9.3 mm |
| C2 | 4.5 mm |
| C3 | 2.9 mm |
| r1,2 - min. | 1.1 mm |
| r3,4 - min. | 0.6 mm |
| a | 39 mm |
| da - min. | 96 mm |
| db - min. | 96 mm |
| Da - max. | 119 mm |
| Db - max. | 121.8 mm |
| ra - max. | 1 mm |
| rb - max. | 0.6 mm |
| dn | 103.9 mm |
| Basic dynamic load rating - C | 16.8 kN |
| Basic static load rating - C0 | 16.6 kN |
| Fatigue load limit - Pu | 0.68 kN |
| Limiting speed for grease lubrication | 12000 r/min |
| Limiting speed for oil lubrication | 19000 mm/min |
| Ball - Dw | 7.144 mm |
| Ball - z | 36 |
| Gref | 7.37 cm3 |
| Calculation factor - e | 0.68 |
| Calculation factor - Y2 | 0.87 |
| Calculation factor - Y0 | 0.38 |
| Calculation factor - X2 | 0.41 |
| Calculation factor - Y1 | 0.92 |
| Calculation factor - Y2 | 1.41 |
| Calculation factor - Y0 | 0.76 |
| Calculation factor - X2 | 0.67 |
| Preload class A - GA | 100 N |
| Preload class B - GB | 200 N |
| Preload class C - GC | 600 N |
| Calculation factor - f | 1.12 |
| Calculation factor - f1 | 0.99 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.02 |
| Calculation factor - f2C | 1.07 |
| Calculation factor - fHC | 1 |
| Preload class A | 139 N/micron |
| Preload class B | 178 N/micron |
| Preload class C | 270 N/micron |
| d1 | 103 mm |
| d2 | 101.4 mm |
| D2 | 115 mm |
| C1 | 9.3 mm |
| C2 | 4.5 mm |
| C3 | 2.9 mm |
| r1,2 min. | 1.1 mm |
| r3,4 min. | 0.6 mm |
| da min. | 96 mm |
| db min. | 96 mm |
| Da max. | 119 mm |
| Db max. | 121.8 mm |
| ra max. | 1 mm |
| rb max. | 0.6 mm |
| dn | 103.9 mm |
| Basic dynamic load rating C | 22.5 kN |
| Basic static load rating C0 | 26.5 kN |
| Fatigue load limit Pu | 0.68 kN |
| Attainable speed for grease lubrication | 12000 r/min |
| Attainable speed for oil-air lubrication | 19000 r/min |
| Ball diameter Dw | 7.144 mm |
| Number of balls z | 36 |
| Reference grease quantity Gref | 7.37 cm³ |
| Preload class A GA | 100 N |
| Static axial stiffness, preload class A | 139 N/µm |
| Preload class B GB | 200 N |
| Static axial stiffness, preload class B | 178 N/µm |
| Preload class C GC | 600 N |
| Static axial stiffness, preload class C | 270 N/µm |
| Calculation factor f | 1.12 |
| Calculation factor f1 | 0.99 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.02 |
| Calculation factor f2C | 1.07 |
| Calculation factor fHC | 1 |
| Calculation factor e | 0.68 |
| Calculation factor (single, tandem) Y2 | 0.87 |
| Calculation factor (single, tandem) Y0 | 0.38 |
| Calculation factor (single, tandem) X2 | 0.41 |
| Calculation factor (back-to-back, face-to-face) Y1 | 0.92 |
| Calculation factor (back-to-back, face-to-face) Y2 | 1.41 |
| Calculation factor (back-to-back, face-to-face) Y0 | 0.76 |
| Calculation factor (back-to-back, face-to-face) X2 | 0.67 |
| Mass bearing | 0.59 kg |