| Width across Flat | W | 6 | mm |
| Mounting dimension | JB | 20 | mm |
| Lower tolerance | Tol H2 | -0,1 | |
| Tolerance | ±0,15 |
| Sie thread fixing screws above | K5 | M10 | |
| Mounting thread below | G2 | M12 | |
| Upper tolerance | Tol A5 | +0,1 |
| heigth | H | 73,50 | mm |
| Width across flats | B | 87 | mm |
| Diameter | D | 40 | mm |
| length | L | 40 | mm |
| Tolerance | H8 |
| Fabricante | Referencia |
|---|---|
| Nadella | CWB40 |
| Dr-Tretter | WB58 040 |
| Rodriguez | WBC 40 |
| Rexroth | 1058-040-00 |
