.gif)
Design Features：
Gear and pinion are made of alloy steel
Split main bushing is steel cast. Kelly drive and slip drive are available for choose.
Slip drive may locate in roller bushing of API standard Kelly or hexagonal Kelly, either long or sho rt slip is usable.
Match with API standard casing bushing and special lifting tool
Efficient lubrication and reliable sealing.
Built to API 7K and marked with the official API monogram
Specifications:
| Model | ZP175 | ZP205 | ZP275 | ZP375 | ZP495 |
| Opening dia. mm(in) |
444.5 (17 1/2) |
520.7 (20 1/2) |
698.5 (27 1/2) |
952.5 (37 1/2) |
1257.3 (49 1/2) |
|
Distance between rotary center and teeth center of inner sprocketmm(in) |
1118 (44) |
1353 (53 1/4 ) |
1353 (53 1/4 ) |
1353 (53 1/4 ) |
1651 (65) |
| Max. static load kN | 1350 | 3150 | 4500 | 5850 | 7200 |
| Max. working torque Nm | 14000 | 23000 | 28000 | 33000 | 37000 |
| Max. speed rpm | 300 | 350 | 250 | 300 | 300 |
| Gear ration | 3.58 | 3.22 | 3.67 | 3.56 | 3.93 |
| Dimensions (L x W x H) mm(in) |
1935×1280 ×585 |
2292×1475 ×668 |
2392×1670 ×685 |
2468×1810 ×718 |
2940×2184 ×813 |
| Weight kg | 3888 | 5530 | 6163 | 8026 | 11626 |