External dimensions（mm)
| d | 277 |
| D | 420 |
| 2B | 130 |
| 2C | 130 |
| γ(minimum) | 4 |
| γ1(3)(minimum） | 1.5 |
Rated load（Paired Double Connection）（KN）
Rated load（Paired Double Connection）{kgf}
Bearing code
| Single -row | BT277-1 |
| DB combination | DB |
| DF combination | — |
Location of distancea0（mm）
Installation size(mm)
| da（minimum） | 307 |
| Db(minimum) | — |
| da（minimum） | — |
| Db(minimum) | 402 |
| γa(minimum) | 3 |
| γb(minimum） | 1.5 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
