komatsu 705-18-20010 box Size Chart (mm/inches) |
|---|
| Bearing number | 71902 CE/P4AH |
| Size (mm) | 28x15x7 |
| Bore Diameter (mm) | 28 |
| Outer Diameter (mm) | 15 |
| Width (mm) | 7 |
| d | 15 mm |
| D | 28 mm |
| B | 7 mm |
| d1 | 19.1 mm |
| d2 | 18.1 mm |
| D1 | 23.9 mm |
| K | 0.5 mm |
| C1 | 4.3 mm |
| r1,2 - min. | 0.3 mm |
| r3,4 - min. | 0.15 mm |
| a | 6.7 mm |
| da - min. | 17 mm |
| db - min. | 17 mm |
| Da - max. | 26 mm |
| Db - max. | 27.2 mm |
| ra - max. | 0.3 mm |
| rb - max. | 0.15 mm |
| dn | 20 mm |
| Basic dynamic load rating - C | 3.2 kN |
| Basic static load rating - C0 | 1.4 kN |
| Fatigue load limit - Pu | 0.06 kN |
| Limiting speed for grease lubrication | 75000 r/min |
| Limiting speed for oil lubrication | 115000 mm/min |
| Ball - Dw | 3.969 mm |
| Ball - z | 12 |
| Gref | 0.2 cm3 |
| Calculation factor - f0 | 7.7 |
| Preload class A - GA | 17 N |
| Preload class B - GB | 51 N |
| Preload class C - GC | 102 N |
| Calculation factor - f | 1.04 |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.04 |
| Calculation factor - f2C | 1.08 |
| Calculation factor - fHC | 1 |
| Preload class A | 13 N/micron |
| Preload class B | 21 N/micron |
| Preload class C | 29 N/micron |
| d1 | 19.1 mm |
| d2 | 18.1 mm |
| D1 | 23.9 mm |
| C1 | 4.3 mm |
| r1,2 min. | 0.3 mm |
| r3,4 min. | 0.15 mm |
| da min. | 17 mm |
| db min. | 17 mm |
| Da max. | 26 mm |
| Db max. | 27.2 mm |
| ra max. | 0.3 mm |
| rb max. | 0.15 mm |
| dn | 20 mm |
| Basic dynamic load rating C | 3.19 kN |
| Basic static load rating C0 | 1.4 kN |
| Fatigue load limit Pu | 0.06 kN |
| Attainable speed for grease lubrication | 75000 r/min |
| Attainable speed for oil-air lubrication | 115000 r/min |
| Ball diameter Dw | 3.969 mm |
| Number of balls z | 12 |
| Reference grease quantity Gref | 0.2 cm³ |
| Preload class A GA | 17 N |
| Static axial stiffness, preload class A | 13 N/µm |
| Preload class B GB | 51 N |
| Static axial stiffness, preload class B | 21 N/µm |
| Preload class C GC | 102 N |
| Static axial stiffness, preload class C | 29 N/µm |
| Calculation factor f | 1.04 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.04 |
| Calculation factor f2C | 1.08 |
| Calculation factor fHC | 1 |
| Calculation factor f0 | 7.7 |
| Mass bearing | 0.015 kg |