Rexnord ZB2308S Flange-Mount Roller Bearing Units
| Brand Name |
Rexnord |
| Model Number |
ZB2308S |
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Features
Rexnord ZB2308S bearing Size Chart (mm/inches) |
|---|
| Bearing number | 71811 CD/HCP4 |
| Size (mm) | 72x55x9 |
| Bore Diameter (mm) | 72 |
| Outer Diameter (mm) | 55 |
| Width (mm) | 9 |
| d | 55 mm |
| D | 72 mm |
| B | 9 mm |
| d1 | 60.7 mm |
| d2 | 60.7 mm |
| D1 | 66.5 mm |
| r1,2 - min. | 0.3 mm |
| r3,4 - min. | 0.15 mm |
| a | 13 mm |
| da - min. | 57 mm |
| db - min. | 57 mm |
| Da - max. | 70 mm |
| Db - max. | 71.2 mm |
| ra - max. | 0.3 mm |
| rb - max. | 0.15 mm |
| dn | 61.3 mm |
| Basic dynamic load rating - C | 10.1 kN |
| Basic static load rating - C0 | 10.8 kN |
| Fatigue load limit - Pu | 0.455 kN |
| Limiting speed for grease lubrication | 22000 r/min |
| Limiting speed for oil lubrication | 32000 mm/min |
| Ball - Dw | 4.762 mm |
| Ball - z | 29 |
| Gref | 0.88 cm3 |
| Calculation factor - f0 | 17.1 |
| Preload class A - GA | 55 N |
| Preload class B - GB | 165 N |
| Preload class C - GC | 330 N |
| Calculation factor - f | 1.27 |
| Calculation factor - f | 1 |
| Calculation factor - f2A | 1 |
| Calculation factor - f2B | 1.1 |
| Calculation factor - f2C | 1.18 |
| Calculation factor - fHC | 1.02 |
| Preload class A | 59 N/micron |
| Preload class B | 101 N/micron |
| Preload class C | 150 N/micron |
| d1 | 60.7 mm |
| d2 | 60.7 mm |
| D1 | 66.5 mm |
| r1,2 min. | 0.3 mm |
| r3,4 min. | 0.15 mm |
| da min. | 57 mm |
| db min. | 57 mm |
| Da max. | 70 mm |
| Db max. | 71.2 mm |
| ra max. | 0.3 mm |
| rb max. | 0.15 mm |
| dn | 61.3 mm |
| Basic dynamic load rating C | 10.1 kN |
| Basic static load rating C0 | 10.8 kN |
| Fatigue load limit Pu | 0.455 kN |
| Attainable speed for grease lubrication | 22000 r/min |
| Attainable speed for oil-air lubrication | 32000 r/min |
| Ball diameter Dw | 4.762 mm |
| Number of balls z | 29 |
| Reference grease quantity Gref | 0.88 cm³ |
| Preload class A GA | 55 N |
| Static axial stiffness, preload class A | 59 N/µm |
| Preload class B GB | 165 N |
| Static axial stiffness, preload class B | 101 N/µm |
| Preload class C GC | 330 N |
| Static axial stiffness, preload class C | 150 N/µm |
| Calculation factor f | 1.27 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.1 |
| Calculation factor f2C | 1.18 |
| Calculation factor fHC | 1.02 |
| Calculation factor f0 | 17.1 |
| Mass bearing | 0.073 kg |