KOYO MK1071 Needle bearing
| Brand Name |
KOYO |
| Model Number |
MK1071 |
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Features
KOYO MK1071 bearing Size Chart (mm/inches) |
|---|
| Bearing number | 71956 CD/P4A |
| Size (mm) | 380x280x46 |
| Bore Diameter (mm) | 380 |
| Outer Diameter (mm) | 280 |
| Width (mm) | 46 |
| d | 280 mm |
| D | 380 mm |
| B | 46 mm |
| d1 | 311.8 mm |
| d2 | 311.8 mm |
| D1 | 348.2 mm |
| r1,2 - min. | 2.1 mm |
| r3,4 - min. | 1.1 mm |
| a | 67.4 mm |
| da - min. | 291 mm |
| db - min. | 291 mm |
| Da - max. | 369 mm |
| Db - max. | 374 mm |
| ra - max. | 2 mm |
| rb - max. | 1 mm |
| dn | 319.7 mm |
| Basic dynamic load rating - C | 291 kN |
| Basic static load rating - C0 | 455 kN |
| Fatigue load limit - Pu | 10.6 kN |
| Limiting speed for grease lubrication | 3200 r/min |
| Limiting speed for oil lubrication | 4800 mm/min |
| Ball - Dw | 30.162 mm |
| Ball - z | 31 |
| Gref | 159 cm3 |
| Calculation factor - f0 | 16.7 |
| Preload class A - GA | 1090 N |
| Preload class B - GB | 2180 N |
| Preload class C - GC | 4360 N |
| Preload class D - GD | 8720 N |
| Calculation factor - f | 1.27 |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.04 |
| Calculation factor - f2C | 1.09 |
| Calculation factor - f2D | 1.15 |
| Calculation factor - fHC | 1 |
| Preload class A | 266 N/micron |
| Preload class B | 363 N/micron |
| Preload class C | 509 N/micron |
| Preload class D | 741 N/micron |
| d1 | 311.8 mm |
| d2 | 311.8 mm |
| D1 | 348.2 mm |
| r1,2 min. | 2.1 mm |
| r3,4 min. | 1.1 mm |
| da min. | 291 mm |
| db min. | 291 mm |
| Da max. | 369 mm |
| Db max. | 374 mm |
| ra max. | 2 mm |
| rb max. | 1 mm |
| dn | 319.7 mm |
| Basic dynamic load rating C | 291 kN |
| Basic static load rating C0 | 455 kN |
| Fatigue load limit Pu | 10.6 kN |
| Attainable speed for grease lubrication | 3200 r/min |
| Attainable speed for oil-air lubrication | 4800 r/min |
| Ball diameter Dw | 30.162 mm |
| Number of balls z | 31 |
| Reference grease quantity Gref | 159 cm³ |
| Preload class A GA | 1090 N |
| Static axial stiffness, preload class A | 266 N/µm |
| Preload class B GB | 2180 N |
| Static axial stiffness, preload class B | 363 N/µm |
| Preload class C GC | 4360 N |
| Static axial stiffness, preload class C | 509 N/µm |
| Preload class D GD | 8720 N |
| Static axial stiffness, preload class D | 741 N/µm |
| Calculation factor f | 1.27 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.04 |
| Calculation factor f2C | 1.09 |
| Calculation factor f2D | 1.15 |
| Calculation factor fHC | 1 |
| Calculation factor f0 | 16.7 |
| Mass bearing | 12.9 kg |