KOYO BH1812 needle roller bearings
Our M252300 Series highly-skilled M252330 Cone Part Number and factory-trained service experts have the resources to help you with all your KOYO BH1812 needle roller bearings needs – including routine maintenance, major repairs, warranty service, and equipment inspections.
| Series | M252300 |
| Cone Part Number | M252330 |
| Cup Part Number | M252310X |
| Design Units | Imperial |
| Bearing Weight | 33.5 Kg |
| Cage Type | Stamped Steel |
| d | 234.95 mm |
| D | 381.000 mm |
| B – Cone Width | 74.613 mm |
| C – Cup Width | 57.150 mm |
| B | 74.610 mm |
| R – Cone Backface To Clear Radius1 | 6.35 mm |
| r – Cup Backface To Clear Radius2 | 3.30 mm |
| da – Cone Frontface Backing Diameter | 261.11 mm |
| db – Cone Backface Backing Diameter | 271.02 mm |
| Da – Cup Frontface Backing Diameter | 364.00 mm |
| Db – Cup Backface Backing Diameter | 356.11 mm |
| Ab – Cage-Cone Frontface Clearance | 4.8 mm |
| Aa – Cage-Cone Backface Clearance | 7.6 mm |
| a – Effective Center Location3 | -6.6 mm |
| C90 – Dynamic Radial Rating (90 million revolutions)4 | 73200 lbf |
| C1 – Dynamic Radial Rating (1 million revolutions)5 | 283000 lbf |
| C0 – Static Radial Rating | 455000 lbf |
| Ca90 – Dynamic Thrust Rating (90 million revolutions)6 | 41700 lbf |
| K – Factor7 | 1.76 |
| e – ISO Factor8 | 0.33 |
| Y – ISO Factor9 | 1.8 |
| G1 – Heat Generation Factor (Roller-Raceway) | 1839.2 |
| G2 – Heat Generation Factor (Rib-Roller End) | 226.1 |
| Cg – Geometry Factor | 0.159 |
Detailed Parameters
parameter：
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