21313KC4 JAPAN NTN SPHERICAL ROLLER BEARINGS
We work closely with our 30 Bore Diameter (mm) 21313KC4 JAPAN NTN SPHERICAL ROLLER BEARINGS manufacturing 30x17x7 partners to bring the best value to Pioneer Machinery Source customers.
| Bearing number: | 71903 ACD/HCP4A |
| Size (mm): | 30x17x7 |
| Bore Diameter (mm): | 30 |
| Outer Diameter (mm): | 17 |
| Width (mm): | 7 |
| d: | 17 mm |
| D: | 30 mm |
| B: | 7 mm |
Product Details
| Bearing number | 71903 ACD/HCP4A |
| Size (mm) | 30x17x7 |
| Bore Diameter (mm) | 30 |
| Outer Diameter (mm) | 17 |
| Width (mm) | 7 |
| d | 17 mm |
| D | 30 mm |
| B | 7 mm |
| d1 | 20.9 mm |
| d2 | 20.9 mm |
| D1 | 25.7 mm |
| r1,2 - min. | 0.3 mm |
| r3,4 - min. | 0.2 mm |
| a | 9 mm |
| da - min. | 19 mm |
| db - min. | 19 mm |
| Da - max. | 28 mm |
| Db - max. | 28.6 mm |
| ra - max. | 0.3 mm |
| rb - max. | 0.2 mm |
| dn | 22.1 mm |
| Basic dynamic load rating - C | 4 kN |
| Basic static load rating - C0 | 2 kN |
| Fatigue load limit - Pu | 0.085 kN |
| Limiting speed for grease lubrication | 53000 r/min |
| Limiting speed for oil lubrication | 80000 mm/min |
| Ball - Dw | 3.969 mm |
| Ball - z | 14 |
| Gref | 0.24 cm3 |
| Calculation factor - e | 0.68 |
| Calculation factor - Y2 | 1.41 |
| Calculation factor - Y0 | 0.76 |
| Calculation factor - X2 | 0.67 |
| Calculation factor - Y1 | 0.92 |
| Preload class A - GA | 25 N |
| Preload class B - GB | 50 N |
| Preload class C - GC | 100 N |
| Preload class D - GD | 200 N |
| Calculation factor - f | 1.05 |
| Calculation factor - f1 | 0.98 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.07 |
| Calculation factor - f2C | 1.12 |
| Calculation factor - f2D | 1.17 |
| Calculation factor - fHC | 1.04 |
| Preload class A | 46 N/micron |
| Preload class B | 60 N/micron |
| Preload class C | 78 N/micron |
| Preload class D | 103 N/micron |
| r1,2 min. | 0.3 mm |
| r3,4 min. | 0.2 mm |
| da min. | 19 mm |
| db min. | 19 mm |
| Da max. | 28 mm |
| Db max. | 28.6 mm |
| ra max. | 0.3 mm |
| rb max. | 0.2 mm |
| Basic dynamic load rating C | 3.97 kN |
| Basic static load rating C0 | 2 kN |
| Fatigue load limit Pu | 0.085 kN |
| Attainable speed for grease lubrication | 53000 r/min |
| Attainable speed for oil-air lubrication | 80000 r/min |
| Ball diameter Dw | 3.969 mm |
| Number of balls z | 14 |
| Reference grease quantity Gref | 0.24 cm³ |
| Preload class A GA | 25 N |
| Static axial stiffness, preload class A | 46 N/µm |
| Preload class B GB | 50 N |
| Static axial stiffness, preload class B | 60 N/µm |
| Preload class C GC | 100 N |
| Static axial stiffness, preload class C | 78 N/µm |
| Preload class D GD | 200 N |
| Static axial stiffness, preload class D | 103 N/µm |
| Calculation factor f | 1.05 |
| Calculation factor f1 | 0.98 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.07 |
| Calculation factor f2C | 1.12 |
| Calculation factor f2D | 1.17 |
| Calculation factor fHC | 1.04 |
| 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 | 0.015 kg |
Company Profile
| Worktime |
7:00AM - 6:00PM |
| Phone |
0065 82577418 |
| Fax |
0065 82577552 |
