| Bearing number |
71960 CDMA/HCP4A |
| Size (mm) |
420x300x56 |
| Bore Diameter (mm) |
420 |
| Outer Diameter (mm) |
300 |
| Width (mm) |
56 |
| d |
300 mm |
| D |
420 mm |
| B |
56 mm |
| d1 |
337 mm |
| d2 |
337 mm |
| D1 |
383 mm |
| r1,2 - min. |
3 mm |
| r3,4 - min. |
1.1 mm |
| a |
76.4 mm |
| da - min. |
313 mm |
| db - min. |
313 mm |
| Da - max. |
405 mm |
| Db - max. |
414 mm |
| ra - max. |
2.5 mm |
| rb - max. |
1 mm |
| dn |
347 mm |
| Basic dynamic load rating - C |
371 kN |
| Basic static load rating - C0 |
600 kN |
| Fatigue load limit - Pu |
13.4 kN |
| Limiting speed for grease lubrication |
3800 r/min |
| Limiting speed for oil lubrication |
5300 mm/min |
| Ball - Dw |
38.1 mm |
| Ball - z |
26 |
| Gref |
265 cm3 |
| Calculation factor - f0 |
16.3 |
| Preload class A - GA |
1400 N |
| Preload class B - GB |
2800 N |
| Preload class C - GC |
5600 N |
| Preload class D - GD |
11200 N |
| Calculation factor - f |
1 |
| Calculation factor - f2A |
1 |
| Calculation factor - f2B |
1.07 |
| Calculation factor - f2C |
1.12 |
| Calculation factor - f2D |
1.18 |
| Calculation factor - fHC |
1.04 |
| Preload class A |
302 N/micron |
| Preload class B |
409 N/micron |
| Preload class C |
570 N/micron |
| Preload class D |
822 N/micron |
| r1,2 min. |
3 mm |
| r3,4 min. |
1.1 mm |
| da min. |
313 mm |
| db min. |
313 mm |
| Da max. |
405 mm |
| Db max. |
414 mm |
| ra max. |
2.5 mm |
| rb max. |
1 mm |
| Basic dynamic load rating C |
371 kN |
| Basic static load rating C0 |
600 kN |
| Fatigue load limit Pu |
13.4 kN |
| Attainable speed for grease lubrication |
3800 r/min |
| Attainable speed for oil-air lubrication |
5300 r/min |
| Ball diameter Dw |
38.1 mm |
| Number of balls z |
26 |
| Reference grease quantity Gref |
265 cm³ |
| Preload class A GA |
1400 N |
| Static axial stiffness, preload class A |
302 N/µm |
| Preload class B GB |
2800 N |
| Static axial stiffness, preload class B |
409 N/µm |
| Preload class C GC |
5600 N |
| Static axial stiffness, preload class C |
570 N/µm |
| Preload class D GD |
11200 N |
| Static axial stiffness, preload class D |
822 N/µm |
| Calculation factor f |
1.22 |
| Calculation factor f1 |
1 |
| Calculation factor f2A |
1 |
| Calculation factor f2B |
1.07 |
| Calculation factor f2C |
1.12 |
| Calculation factor f2D |
1.18 |
| Calculation factor fHC |
1.04 |
| Calculation factor f0 |
16.3 |
| Mass bearing |
19.4 kg |