lubrication hole type: Koyo NRB B-57 Drawn Cup Needle Roller Bearings
| Place of Origin |
Japan Germany |
| Brand Name |
Koyo NRB |
| Certification |
CO CQ |
| Model Number |
B-57 |
| Min.Order Quantity |
1SET |
| Price |
Negotiation |
| Packaging Details |
Original Packing |
| Delivery Time |
Within 7 days OR according to your demand |
| Payment Terms |
MoneyGram,Western Union,T/T |
Product Features
Koyo NRB B-57 bearing Size Chart (mm/inches) |
|---|
| Bearing number | B71911-E-2RSD-T-P4S |
| Size (mm) | 55x80x13 |
| Bore Diameter (mm) | 55 |
| Outer Diameter (mm) | 80 |
| Width (mm) | 13 |
| d | 55 mm |
| D | 80 mm |
| B | 13 mm |
| a | 22 mm |
| Da | 75,5 mm / Tolerance: H12 |
| da | 60 mm / Tolerance: h12 |
| r1 min | 1 mm |
| ra max | 0,6 mm |
| ra1 max | 0,6 mm |
| rmin | 1 mm |
| α | 25 ° / Angle |
| m | 0,18 kg / Weight |
| Cr | 22200 N / Dynamic load rating (radial) |
| C0r | 13700 N / Static load rating (radial) |
| nG Fett | 15000 1/min / Limiting speed for grease lubrication |