NTN 7028HVDBJ84 Precision Ball Bearings
| Place of Origin |
Check Distributor Service |
| Brand Name |
Check Distributor |
| Certification |
Original certificate |
| Model Number |
NTN 7028HVDBJ84 |
| Min.Order Quantity |
check bearing service company |
| Price |
Contact With Authorized agent |
| Packaging Details |
Original industrial package |
| Delivery Time |
Within 5 working days |
| Payment Terms |
paypal,UnionPay, Visa/MasterCard, Amex, Discover,T/T |
| Supply Ability |
295 |
Product Features
Check Distributor NTN 7028HVDBJ84 bearing Size Chart (mm/inches) |
|---|
| Bearing number | 71909 ACB/HCP4A |
| Size (mm) | 45x68x12 |
| Bore Diameter (mm) | 45 |
| Outer Diameter (mm) | 68 |
| Width (mm) | 12 |
| d | 45 mm |
| D | 68 mm |
| B | 12 mm |
| C | 12 mm |
| d1 | 53,5 mm |
| d2 | 52,4 mm |
| r1 min. | 0,6 mm |
| r2 min. | 0,6 mm |
| r3 min. | 0,3 mm |
| r4 min. | 0,3 mm |
| D1 | 61,8 mm |
| D2 | 61,8 mm |
| da min. | 48,2 mm |
| Da max. | 64,8 mm |
| db min | 48,2 mm |
| ra max. | 0,6 mm |
| rb max. | 0,3 mm |
| dh | 54,2 mm |
| Db max | 66 mm |
| Weight | 0,13 Kg |
| Basic dynamic load rating (C) | 7,02 kN |
| Basic static load rating (C0) | 5,4 kN |
| (Grease) Lubrication Speed | 30 000 r/min |
| (Oil) Lubrication Speed | 45 000 r/min |
| Fatigue load limit (Pu) | 0,232 |
| 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 | 22.1 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 | 9.56 kN |
| Basic static load rating C0 | 9 kN |
| Fatigue load limit Pu | 0.232 kN |
| Attainable speed for grease lubrication | 30000 r/min |
| Attainable speed for oil-air lubrication | 45000 r/min |
| Ball diameter Dw | 4.762 mm |
| Number of balls z | 27 |
| Reference grease quantity Gref | 1.75 cm³ |
| Preload class A GA | 41 N |
| Static axial stiffness, preload class A | 82 N/µm |
| Preload class B GB | 82 N |
| Static axial stiffness, preload class B | 107 N/µm |
| Preload class C GC | 245 N |
| Static axial stiffness, preload class C | 159 N/µm |
| Calculation factor f | 1.08 |
| Calculation factor f1 | 0.99 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.02 |
| Calculation factor f2C | 1.08 |
| Calculation factor fHC | 1.01 |
| 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 | 0.13 kg |