Drawworks Power rating 735 (1000 ) kW (hp) Max. fastline pull 275 kN
Drawworks Power rating 735 (1000 ) kW (hp) Max. fastline pull 275 kN
Descriptions of Drawworks Power rating 735 (1000 ) kW (hp) Max. fastline pull 275 kN:
All bearing are rolling bearings and the shafts are made of alloy steel.
The chains are pressure lubricated.
The drum is grooved. The low-speed & high- speed ends of drum shaft are equipped with a ventilating air tube clutch.
The brake rim (or disc) is water cooled and the surface is medium-frequency induction hardened which provides long service life.
The contours of the sprocket teeth are medium frequency induction hardened. All transmission clutches are of involute spline type.
Specifications:
| Model | JC40 | JC50 | JC70 | JC90 | |
| Nominal drill depth m | 114mm DP | 2500-4000 | 3500-5000 | 4500-7000 | 6000-9000 |
| 127mm DP | 2000-3200 | 2800-4500 | 4000-6000 | 5000-8000 | |
| Power rating kW (hp) | 735 (1000 ) | 1100 (1500 ) | 1470 (2000 ) | 2210 (3000 ) | |
| Qty. of motorxpower rating kW (hp) | 2x438(537)/ 1x800(1072) |
2x800(1072) | 2x800(1072) | 3x800(1072) | |
| Motor rated speed r/min | 880/970 | 970 | 970 | 970 | |
| Drill line dia. mm(in) | 32 (1 1/4) | 35 (1 3/8 ) | 38 (1 1/2) | 45 (1 3/4) | |
| Max. fastline pull kN | 275 | 340 | 485 | 630 | |
| Drum size (Dia. x width) mm(in) | 640x1139 (25 1/4x44 7/8 ) |
685x1138 (27x44 7/8 ) |
770x1361 (30x53 1/2) |
914x1556 (36x61 1/4) |
|
| Brake disc size (Dia. x width) mm(in) | 1500x40 (59x1 1/2 ) |
1600x76 (63x3 ) |
1600x76 (63x3) |
1600x76 (63x3 ) |
|
| Sand drum size (Dia. x width) mm(in) | 356x1245 | 356x1245 | 356x1245 | 356x1448 | |
| (14x49 ) | (14x49 ) | (14x49 ) | (14x57 ) | ||
| Sand drum capacity (14.5 drill line) m(ft) | 4000 (13120 ) | 5000 (16400 ) | 6400 (21000 ) | 7500 (24600 ) | |
| Auxiliary brake | DS40 | DS50 | DS70 | DS90 | |
| Dimension (LxWxH) mm | 6600x3716x2990 | 6800x4537x2998 | 7670x4585x3197 | 7874x5486x2997 | |
| Weight kg | 40000 | 48000 | 61000 | 70000 | |
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