7221B KOYO Single-row, matched pair angular contact ball bearings
| Brand Name: |
KOYO |
| Model Number: |
7221B |
| Series: |
234000 |
| Cone Part Number: |
EE234156 |
| Cup Part Number: |
234215W |
| Design Units: |
Imperial |
| Bearing Weight: |
44.200 Kg |
| Cage Type: |
Stamped Steel |
| d: |
396.875 mm |
| D: |
546.100 mm |
| PDF |
7221B |
Product Details
| Series |
234000 |
| Cone Part Number |
EE234156 |
| Cup Part Number |
234215W |
| Design Units |
Imperial |
| Bearing Weight |
44.200 Kg |
| Cage Type |
Stamped Steel |
| d |
396.875 mm |
| D |
546.100 mm |
| B - Cone Width |
61.120 mm |
| C - Cup Width |
55.563 mm |
| B |
76.203 mm |
| R - Cone Backface To Clear Radius1 |
6.35 mm |
| r - Cup Backface To Clear Radius2 |
6.35 mm |
| da - Cone Frontface Backing Diameter |
418.08 mm |
| db - Cone Backface Backing Diameter |
427.99 mm |
| Da - Cup Frontface Backing Diameter |
515.87 mm |
| Db - Cup Backface Backing Diameter |
503.94 mm |
| Ab - Cage-Cone Frontface Clearance |
7.9 mm |
| Aa - Cage-Cone Backface Clearance |
12.7 mm |
| a - Effective Center Location3 |
35.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
63300 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
244000 lbf |
| C0 - Static Radial Rating |
451000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
51600 lbf |
| K - Factor7 |
1.23 |
| e - ISO Factor8 |
0.48 |
| Y - ISO Factor9 |
1.26 |
| G1 - Heat Generation Factor (Roller-Raceway) |
2782.9 |
| G2 - Heat Generation Factor (Rib-Roller End) |
448.6 |
| Cg - Geometry Factor |
0.202 |