Original SKF Cylindrical Roller Bearings NUP 2309 SIGMA
Original SKF Cylindrical Roller Bearings NUP 2309 SIGMA Engineering Calculator , SWEDEN SKF Cylindrical Roller Bearings Manufacturing Service 250x140x42 Size (mm) . Jinan Excavator Parts Company 250 Bore Diameter (mm) Get Your 250x140x42 Free.
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Details
| Bearing number | 7228 CD/P4A |
| Size (mm) | 250x140x42 |
| Bore Diameter (mm) | 250 |
| Outer Diameter (mm) | 140 |
| Width (mm) | 42 |
| d | 140 mm |
| D | 250 mm |
| B | 42 mm |
| d1 | 176.8 mm |
| d2 | 176.8 mm |
| D1 | 213.2 mm |
| r1,2 - min. | 3 mm |
| r3,4 - min. | 1.5 mm |
| a | 47.3 mm |
| da - min. | 154 mm |
| db - min. | 154 mm |
| Da - max. | 236 mm |
| Db - max. | 241 mm |
| ra - max. | 2.5 mm |
| rb - max. | 1.5 mm |
| dn | 184.8 mm |
| Basic dynamic load rating - C | 221 kN |
| Basic static load rating - C0 | 240 kN |
| Fatigue load limit - Pu | 7.4 kN |
| Limiting speed for grease lubrication | 5600 r/min |
| Limiting speed for oil lubrication | 8500 mm/min |
| Ball - Dw | 30.162 mm |
| Ball - z | 18 |
| Gref | 83.931 cm3 |
| Calculation factor - f0 | 15.2 |
| Preload class A - GA | 850 N |
| Preload class B - GB | 1700 N |
| Preload class C - GC | 3400 N |
| Preload class D - GD | 6800 N |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.01 |
| Calculation factor - f2C | 1.03 |
| Calculation factor - f2D | 1.05 |
| Calculation factor - fHC | 1 |
| Preload class A | 163 N/micron |
| Preload class B | 220 N/micron |
| Preload class C | 305 N/micron |
| Preload class D | 437 N/micron |
| r1,2 min. | 3 mm |
| r3,4 min. | 1.5 mm |
| da min. | 154 mm |
| db min. | 154 mm |
| Da max. | 236 mm |
| Db max. | 241 mm |
| ra max. | 2.5 mm |
| rb max. | 1.5 mm |
| Basic dynamic load rating C | 221 kN |
| Basic static load rating C0 | 240 kN |
| Fatigue load limit Pu | 7.35 kN |
| Attainable speed for grease lubrication | 5600 r/min |
| Attainable speed for oil-air lubrication | 8500 r/min |
| Ball diameter Dw | 30.162 mm |
| Number of balls z | 18 |
| Reference grease quantity Gref | 83.931 cm³ |
| Preload class A GA | 850 N |
| Static axial stiffness, preload class A | 163 N/µm |
| Preload class B GB | 1700 N |
| Static axial stiffness, preload class B | 220 N/µm |
| Preload class C GC | 3400 N |
| Static axial stiffness, preload class C | 305 N/µm |
| Preload class D GD | 6800 N |
| Static axial stiffness, preload class D | 437 N/µm |
| Calculation factor f | 1.09 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.01 |
| Calculation factor f2C | 1.03 |
| Calculation factor f2D | 1.05 |
| Calculation factor fHC | 1 |
| Calculation factor f0 | 15.2 |
| Mass bearing | 8.14 kg |
Company Profile
| Worktime |
9:00-18:00(Beijing time) |
| Phone |
86 0531-8299 9952 |
| Fax |
86 0531 -82990353 |
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