komatsu 21M-60-11240 box Size Chart (mm/inches) |
|---|
| Bearing number | S7213 ACD/P4A |
| Size (mm) | 120x65x23 |
| Bore Diameter (mm) | 120 |
| Outer Diameter (mm) | 65 |
| Width (mm) | 23 |
| d | 65 mm |
| D | 120 mm |
| B | 23 mm |
| d1 | 82.9 mm |
| d2 | 82.9 mm |
| D2 | 105.3 mm |
| r1,2 - min. | 1.5 mm |
| r3,4 - min. | 0.6 mm |
| a | 33.2 mm |
| da - min. | 74 mm |
| da - max. | 82.1 mm |
| db - min. | 74 mm |
| db - max. | 82.1 mm |
| Da - max. | 111 mm |
| Db - max. | 115.8 mm |
| ra - max. | 1.5 mm |
| rb - max. | 0.6 mm |
| Basic dynamic load rating - C | 63.7 kN |
| Basic static load rating - C0 | 51 kN |
| Fatigue load limit - Pu | 2.2 kN |
| Limiting speed for grease lubrication | 10000 r/min |
| Ball - Dw | 15.875 mm |
| Ball - z | 15 |
| 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 | 400 N |
| Preload class B - GB | 800 N |
| Preload class C - GC | 1600 N |
| Preload class D - GD | 3200 N |
| Calculation factor - f | 1.07 |
| Calculation factor - f1 | 0.99 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.01 |
| Calculation factor - f2C | 1.02 |
| Calculation factor - f2D | 1.05 |
| Calculation factor - fHC | 1 |
| Preload class A | 189 N/micron |
| Preload class B | 245 N/micron |
| Preload class C | 324 N/micron |
| Preload class D | 437 N/micron |
| d1 | 82.9 mm |
| d2 | 82.9 mm |
| D2 | 105.3 mm |
| r1,2 min. | 1.5 mm |
| r3,4 min. | 0.6 mm |
| da min. | 74 mm |
| da max. | 82.1 mm |
| db min. | 74 mm |
| db max. | 82.1 mm |
| Da max. | 111 mm |
| Db max. | 115.8 mm |
| ra max. | 1.5 mm |
| rb max. | 0.6 mm |
| Basic dynamic load rating C | 63.7 kN |
| Basic static load rating C0 | 51 kN |
| Fatigue load limit Pu | 2.2 kN |
| Attainable speed for grease lubrication | 10000 r/min |
| Ball diameter Dw | 15.875 mm |
| Number of balls z | 15 |
| Preload class A GA | 400 N |
| Static axial stiffness, preload class A | 189 N/µm |
| Preload class B GB | 800 N |
| Static axial stiffness, preload class B | 245 N/µm |
| Preload class C GC | 1600 N |
| Static axial stiffness, preload class C | 324 N/µm |
| Preload class D GD | 3200 N |
| Static axial stiffness, preload class D | 437 N/µm |
| Calculation factor f | 1.07 |
| Calculation factor f1 | 0.99 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.01 |
| Calculation factor f2C | 1.02 |
| Calculation factor f2D | 1.05 |
| 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 | 1.03 kg |