Original SKF Cylindrical Roller Bearings NU330 KOYO
Various SWEDEN SKF Cylindrical Roller Bearings Jinan Excavator Parts Company 12x21x5 12x21x5 Size (mm) types and sizes to accommodate your Original SKF Cylindrical Roller Bearings NU330 KOYO requirements. 12 Bore Diameter (mm)
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Details
| Bearing number | 71801 ACD/P4 |
| Size (mm) | 12x21x5 |
| Bore Diameter (mm) | 12 |
| Outer Diameter (mm) | 21 |
| Width (mm) | 5 |
| d | 12 mm |
| D | 21 mm |
| B | 5 mm |
| C | 5 mm |
| d1 | 15.1 mm |
| d2 | 15.1 mm |
| r1 min. | 0,3 mm |
| r2 min. | 0,3 mm |
| r3 min. | 0,15 mm |
| r4 min. | 0,15 mm |
| D1 | 18.1 mm |
| D2 | – mm |
| da min. | 14 mm |
| Da max. | 19 mm |
| db min | 14 mm |
| ra max. | 0.3 mm |
| rb max. | 0.15 mm |
| dh | 15,4 mm |
| Db max | 20,2 mm |
| Weight | 0,006 Kg |
| Basic dynamic load rating (C) | 1,95 kN |
| Basic static load rating (C0) | 1,12 kN |
| (Grease) Lubrication Speed | 63 000 r/min |
| (Oil) Lubrication Speed | 95 000 r/min |
| Fatigue load limit (Pu) | 0,048 |
| r1,2 min. | 0.3 mm |
| r3,4 min. | 0.15 mm |
| a | 6.4 mm |
| db min. | 14 mm |
| Db max. | 20.2 mm |
| dn | 15.4 mm |
| Basic dynamic load rating C | 1.95 kN |
| Basic static load rating C0 | 1.12 kN |
| Fatigue load limit Pu | 0.048 kN |
| Attainable speed for grease lubrication | 63000 r/min |
| Attainable speed for oil-air lubrication | 95000 r/min |
| Ball diameter Dw | 2.381 mm |
| Number of balls z | 14 |
| Reference grease quantity Gref | 0.07 cm³ |
| Preload class A GA | 17 N |
| Static axial stiffness, preload class A | 34 N/µm |
| Preload class B GB | 53 N |
| Static axial stiffness, preload class B | 54 N/µm |
| Preload class C GC | 105 N |
| Static axial stiffness, preload class C | 72 N/µm |
| Calculation factor f | 1.06 |
| Calculation factor f1 | 0.97 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.08 |
| Calculation factor f2C | 1.15 |
| 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 | 0.006 kg |
Company Profile
| Worktime |
9:00-18:00(Beijing time) |
| Phone |
86 0531-8299 9952 |
| Fax |
86 0531 -82990353 |
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