Komatsu 20K-910-1330 set Size Chart (mm/inches) |
|---|
| Bearing number | S71907 CB/HCP4A |
| Size (mm) | 55x35x10 |
| Bore Diameter (mm) | 55 |
| Outer Diameter (mm) | 35 |
| Width (mm) | 10 |
| d | 35 mm |
| D | 55 mm |
| B | 10 mm |
| d1 | 42.46 mm |
| d2 | 41.56 mm |
| D2 | 49.5 mm |
| r1,2 - min. | 0.6 mm |
| r3,4 - min. | 0.3 mm |
| a | 13.6 mm |
| da - min. | 38.2 mm |
| da - max. | 41.9 mm |
| db - min. | 38.2 mm |
| db - max. | 41 mm |
| Da - max. | 51.8 mm |
| Db - max. | 53 mm |
| ra - max. | 0.6 mm |
| rb - max. | 0.3 mm |
| Basic dynamic load rating - C | 5.2 kN |
| Basic static load rating - C0 | 3.6 kN |
| Fatigue load limit - Pu | 0.156 kN |
| Limiting speed for grease lubrication | 40000 r/min |
| Ball - Dw | 3.969 mm |
| Ball - z | 25 |
| Calculation factor - f0 | 9.7 |
| Preload class A - GA | 17 N |
| Preload class B - GB | 34 N |
| Preload class C - GC | 100 N |
| Calculation factor - f | 1.06 |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.03 |
| Calculation factor - f2C | 1.08 |
| Calculation factor - fHC | 1.01 |
| Preload class A | 25 N/micron |
| Preload class B | 33 N/micron |
| Preload class C | 52 N/micron |
| d1 | 42.46 mm |
| d2 | 41.56 mm |
| D2 | 49.5 mm |
| r1,2 min. | 0.6 mm |
| r3,4 min. | 0.3 mm |
| da min. | 38.2 mm |
| da max. | 41.9 mm |
| db min. | 38.2 mm |
| db max. | 41 mm |
| Da max. | 51.8 mm |
| Db max. | 53 mm |
| ra max. | 0.6 mm |
| rb max. | 0.3 mm |
| Basic dynamic load rating C | 6.89 kN |
| Basic static load rating C0 | 6.2 kN |
| Fatigue load limit Pu | 0.156 kN |
| Attainable speed for grease lubrication | 40000 r/min |
| Ball diameter Dw | 3.969 mm |
| Number of balls z | 25 |
| Preload class A GA | 17 N |
| Static axial stiffness, preload class A | 25 N/µm |
| Preload class B GB | 34 N |
| Static axial stiffness, preload class B | 33 N/µm |
| Preload class C GC | 100 N |
| Static axial stiffness, preload class C | 52 N/µm |
| Calculation factor f | 1.06 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.03 |
| Calculation factor f2C | 1.08 |
| Calculation factor fHC | 1.01 |
| Calculation factor f0 | 9.7 |
| Mass bearing | 0.077 kg |