SK508 Series Kelly bar
508-3 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) | ||||||
| JS508-3X12 | 13215 | 13390 | 12050 | 34080 | 33680 | 9850 | 450 | 320 |
| JS508-3X14 | 15215 | 15390 | 14050 | 40080 | 39680 | 11150 | 450 | 320 |
| MZ508-3X15 | 16215 | 16390 | 15050 | 43180 | / | 11550 | 450 | / |
| MZ508-3X16 | 17215 | 17390 | 16050 | 46180 | / | 12200 | 450 | / |
508-4 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) | ||||||
| JS508-4×16 | 17305 | 17480 | 16050 | 60650 | 60150 | 13800 | 360 | 250 |
| JS508-4X17 | 18305 | 18480 | 17050 | 64650 | 64150 | 14600 | 360 | 250 |
| MZ508-4X16 | 17305 | 17480 | 16050 | 60930 | / | 13300 | 360 | / |
| MZ508-4X17 | 18305 | 18480 | 17050 | 64930 | / | 14200 | 360 | / |
508-5 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) | ||||||
| MZ508-5X15 | 16305 | 16480 | 15050 | 71000 | / | 12800 | 360 | / |
| MZ508-5×16 | 17305 | 17480 | 16050 | 76000 | / | 13550 | 360 | / |
| MZ508-5×17 | 18305 | 18480 | 17050 | 81000 | / | 14300 | 360 | / |
| MZ508-5×18 | 19305 | 19480 | 18050 | 86000 | / | 15000 | 360 | / |
508-6 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) | ||||||
| MZ508-6×15.5 | 16790 | 16980 | 15550 | 88045 | / | 13500 | 220 | / |
| MZ508-6×16 | 17310 | 17480 | 16050 | 91045 | / | 13900 | 220 | / |
| MZ508-6×17 | 18310 | 18480 | 17050 | 97045 | / | 14700 | 220 | / |
| MZ508-6×18 | 19310 | 19480 | 18050 | 103045 | / | 15400 | 220 | / |
※Other lengths and other drive stub dimensions on request; Weight tolerance ±5%.
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