KOYO 453A Tapered Roller Bearings
| Bearing number: | 7018 CB/HCP4A |
| Size (mm): | 140x90x24 |
| Bore Diameter (mm): | 140 |
| Outer Diameter (mm): | 90 |
| Width (mm): | 24 |
| d: | 90 mm |
| D: | 140 mm |
| B: | 24 mm |
Product Details
| Bearing number | 7018 CB/HCP4A |
| Size (mm) | 140x90x24 |
| Bore Diameter (mm) | 140 |
| Outer Diameter (mm) | 90 |
| Width (mm) | 24 |
| d | 90 mm |
| D | 140 mm |
| B | 24 mm |
| d1 | 108.7 mm |
| d2 | 106.13 mm |
| D2 | 125 mm |
| r1,2 - min. | 1.5 mm |
| r3,4 - min. | 1 mm |
| a | 27.5 mm |
| da - min. | 97 mm |
| db - min. | 97 mm |
| Da - max. | 133 mm |
| Db - max. | 135.4 mm |
| ra - max. | 1.5 mm |
| rb - max. | 1 mm |
| dn | 110 mm |
| Basic dynamic load rating - C | 29.1 kN |
| Basic static load rating - C0 | 25 kN |
| Fatigue load limit - Pu | 0.98 kN |
| Limiting speed for grease lubrication | 15000 r/min |
| Limiting speed for oil lubrication | 24000 mm/min |
| Ball - Dw | 10.319 mm |
| Ball - z | 25 |
| Gref | 14.1 cm3 |
| Calculation factor - f0 | 9.7 |
| Preload class A - GA | 92 N |
| Preload class B - GB | 185 N |
| Preload class C - GC | 550 N |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.02 |
| Calculation factor - f2C | 1.05 |
| Calculation factor - fHC | 1.01 |
| Preload class A | 61 N/micron |
| Preload class B | 79 N/micron |
| Preload class C | 124 N/micron |
| r1,2 min. | 1.5 mm |
| r3,4 min. | 1 mm |
| da min. | 97 mm |
| db min. | 97 mm |
| Da max. | 133 mm |
| Db max. | 135.4 mm |
| ra max. | 1.5 mm |
| rb max. | 1 mm |
| Basic dynamic load rating C | 37.7 kN |
| Basic static load rating C0 | 43 kN |
| Fatigue load limit Pu | 0.98 kN |
| Attainable speed for grease lubrication | 15000 r/min |
| Attainable speed for oil-air lubrication | 24000 r/min |
| Ball diameter Dw | 10.319 mm |
| Number of balls z | 25 |
| Reference grease quantity Gref | 14.1 cm³ |
| Preload class A GA | 92 N |
| Static axial stiffness, preload class A | 61 N/µm |
| Preload class B GB | 185 N |
| Static axial stiffness, preload class B | 79 N/µm |
| Preload class C GC | 550 N |
| Static axial stiffness, preload class C | 124 N/µm |
| Calculation factor f | 1.07 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.02 |
| Calculation factor f2C | 1.05 |
| Calculation factor fHC | 1.01 |
| Calculation factor f0 | 9.7 |
| Mass bearing | 1.18 kg |
