SK377 Series Kelly bar
377-3 Series Kelly bar
| Kelly bar type | A （mm) |
B （mm) |
D （mm) |
C （mm) |
C1 （mm) |
Theoretical weight | Rated torque | Rated pressure |
| (kg) | (kNm) | (kN) | ||||||
| JS377-3×10 | 11250 | 11420 | 10050 | 28740 | 28340 | 5100 | 250 | 180 |
| JS377-3×12.5 | 13750 | 13920 | 12550 | 36240 | 35840 | 6200 | 250 | 180 |
| MZ377-3×10 | 11250 | 11420 | 10050 | 28840 | / | 4950 | 250 | / |
| MZ377-3×12.5 | 13750 | 13920 | 12550 | 36340 | / | 6050 | 250 | / |
377-4 Series Kelly bar
| Kelly bar type | A （mm) |
B （mm) |
D （mm) |
C （mm) |
C1 （mm) |
Theoretical weight | Rated torque | Rated pressure |
| (kg) | (kNm) | (kN) | ||||||
| JS377-4×10 | 11250 | 11420 | 10050 | 38065 | 37565 | 5800 | 180 | 130 |
| JS377-4×12.5 | 13750 | 13920 | 12550 | 48065 | 47565 | 7000 | 180 | 130 |
| MZ377-4×10 | 11250 | 11420 | 10050 | 38185 | / | 5700 | 180 | / |
| MZ377-4×12.5 | 13750 | 13920 | 12550 | 48185 | / | 6900 | 180 | / |
377-5 Series Kelly bar
| Kelly bar type | A （mm) |
B （mm) |
D （mm) |
C （mm) |
C1 （mm) |
Theoretical weight | Rated torque | Rated pressure |
| (kg) | (kNm) | (kN) | ||||||
| MZ377-5×10 | 11260 | 11430 | 10050 | 47125 | / | 5760 | 160 | / |
| MZ377-5×12.5 | 13760 | 13930 | 12550 | 59625 | / | 7200 | 160 | / |
※Other lengths and other drive stub dimensions on request; Weight tolerance ±5%.
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