SK720 Series Kelly bar
720-4 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) | ||||||
| JS720-4×25 | 26675 | 26930 | 25050 | 94750 | 93950 | 35700 | 1000 | 700 |
| JS720-4×27.5 | 29175 | 29430 | 27550 | 104750 | 103950 | 38700 | 1000 | 700 |
| MZ720-4×24 | 25675 | 25930 | 24050 | 91150 | / | 31800 | 1000 | / |
| MZ720-4×25 | 26675 | 26930 | 25050 | 95150 | / | 33000 | 1000 | / |
720-5 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) | ||||||
| JS720-5×20 | 21675 | 21930 | 20050 | 92320 | 91320 | 33800 | 800 | 560 |
| JS720-5×21 | 22675 | 22930 | 21050 | 97320 | 96320 | 35200 | 800 | 560 |
| MZ720-5X20 | 21675 | 21930 | 20050 | 92920 | / | 31000 | 800 | / |
| MZ720-5×21 | 22675 | 22930 | 21050 | 97920 | / | 32500 | 800 | / |
720-6 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) | ||||||
| MZ720-6X18 | 19675 | 19930 | 18050 | 100150 | / | 29900 | 550 | / |
| MZ720-6X19 | 20675 | 20930 | 19050 | 106150 | / | 31300 | 550 | / |
| MZ720-6X20 | 21675 | 21930 | 20050 | 112150 | / | 32800 | 550 | / |
| MZ720-6X22 | 23675 | 23930 | 22050 | 124150 | / | 35560 | 550 | / |
※Other lengths and other drive stub dimensions on request; Weight tolerance ±5%.
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