KOYO HK2018RS Needle Non Thrust Roller Bearings
| Brand Name |
KOYO HK2018RS Needle Non Thrust Roller Bearings |
| Model Number |
HK2018RS |
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
| PDF |
HK2018RS |
Product Details
| Bearing number | 71909 CB/HCP4A |
| Size (mm) | 68x45x12 |
| Bore Diameter (mm) | 68 |
| Outer Diameter (mm) | 45 |
| Width (mm) | 12 |
| d | 45 mm |
| D | 68 mm |
| B | 12 mm |
| d1 | 53.45 mm |
| d2 | 52.4 mm |
| D2 | 61.8 mm |
| r1,2 - min. | 0.6 mm |
| r3,4 - min. | 0.3 mm |
| a | 16.1 mm |
| da - min. | 48.2 mm |
| db - min. | 48.2 mm |
| Da - max. | 64.8 mm |
| Db - max. | 66 mm |
| ra - max. | 0.6 mm |
| rb - max. | 0.3 mm |
| dn | 54.2 mm |
| Basic dynamic load rating - C | 7.4 kN |
| Basic static load rating - C0 | 5.7 kN |
| Fatigue load limit - Pu | 0.245 kN |
| Limiting speed for grease lubrication | 32000 r/min |
| Limiting speed for oil lubrication | 50000 mm/min |
| Ball - Dw | 4.762 mm |
| Ball - z | 27 |
| Gref | 1.75 cm3 |
| Calculation factor - f0 | 9.7 |
| Preload class A - GA | 24 N |
| Preload class B - GB | 48 N |
| Preload class C - GC | 145 N |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.03 |
| Calculation factor - f2C | 1.08 |
| Calculation factor - fHC | 1.01 |
| Preload class A | 32 N/micron |
| Preload class B | 41 N/micron |
| Preload class C | 66 N/micron |
| r1,2 min. | 0.6 mm |
| r3,4 min. | 0.3 mm |
| da min. | 48.2 mm |
| db min. | 48.2 mm |
| Da max. | 64.8 mm |
| Db max. | 66 mm |
| ra max. | 0.6 mm |
| rb max. | 0.3 mm |
| Basic dynamic load rating C | 9.95 kN |
| Basic static load rating C0 | 9.65 kN |
| Fatigue load limit Pu | 0.245 kN |
| Attainable speed for grease lubrication | 32000 r/min |
| Attainable speed for oil-air lubrication | 50000 r/min |
| Ball diameter Dw | 4.762 mm |
| Number of balls z | 27 |
| Reference grease quantity Gref | 1.75 cm³ |
| Preload class A GA | 24 N |
| Static axial stiffness, preload class A | 32 N/µm |
| Preload class B GB | 48 N |
| Static axial stiffness, preload class B | 41 N/µm |
| Preload class C GC | 145 N |
| Static axial stiffness, preload class C | 66 N/µm |
| Calculation factor f | 1.08 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.03 |
| Calculation factor f2C | 1.08 |
| Calculation factor fHC | 1.01 |
| Calculation factor f0 | 9.7 |
| Mass bearing | 0.13 kg |
Company Profile
| Worktime |
Seg - Sex (9.00 - 18.00) Sáb (9: 00-12: 00) |
| Phone |
(65) 8257 8518 |
| Fax |
(65) 6258 7399 |
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