Design Features:
• The split type master bushing is made from a steel casting. Two transmission types (Kelly and pin) are available.
• Pin transmission type is suitable for API standard square Kelly or hexagonal Kelly roller bushing. Long and short slips are applicable.
• With API casing bushings and special sling.
• Conform to API specification 7K and are stamped with API monogram.
Model | ZP175 | ZP205 | ZP275 | ZP375 | ZP495 | |
Dia. of opening | 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) |
Table axis to center inner row sprocket teeth | mm (in) | 1118(44) | 1353(531/4) | 1353(531/4) | 1353(531/4) | 1651(65) |
Max. static load | kN | 1350 | 3150 | 4500 | 5850 | 7250 |
Max. working torque | Nm | 14000 | 23000 | 28000 | 33000 | 37000 |
Max. speed | r/min | 300 | 350 | 250 | 300 | 300 |
Gear ratio | 3.58 | 3.22 | 3.67 | 3.56 | 3.93 |