Dongying Boru Mechanical Equipment Co.,Ltd
Draw works
• All sheaves and shafts are made of alloy steel.
• Chains are pressure lubricated.
• Drum is grooved. The low-speed & high-speed ends of the drum shaft are equipped with ventilating pneumatic tube clutch.
• The brake rim (or disc) is water cooled and the surface is medium-frequency induction hardened that provides excellent wear-resistance capacity and long service life.
• High pressure drilling fluid sealing system.
• The main brake is hydraulic disc brake, and the auxiliary brake is electromagnetic eddy current brake.
• Chains are pressure lubricated.
• Drum is grooved. The low-speed & high-speed ends of the drum shaft are equipped with ventilating pneumatic tube clutch.
• The brake rim (or disc) is water cooled and the surface is medium-frequency induction hardened that provides excellent wear-resistance capacity and long service life.
• High pressure drilling fluid sealing system.
• The main brake is hydraulic disc brake, and the auxiliary brake is electromagnetic eddy current brake.
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Model
Parameters |
JC40 | JC40D | JC40DB | JC50 | JC50D | JC50DB | JC70 | JC70DB |
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Rating Impute Power hp (kW) |
1000(735) | 1500(1100) | 2000(1470) | |||||
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Max. Fast line Pull lbf.(kN) |
61820(275) | 76435(340) | 109030(485) | |||||
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Dia. of Drill Line in (mm) |
1 1/4(32) | 1 3/8(35) | 1 1/2(38) | |||||
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Drum Size (dia.×width) in (mm) |
25.20×44.84 (640×1139) |
25.20×51.25 (640×1302) |
26.97×44.80 (685×1138) |
30.31×53.58 (770×1361) |
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| Gears for Hoisting Speed | 4+2R | Step-less speed changing | 6+2R | Step-less speed changing | 6+2R | Step-less speed changing | ||
| Brake Disc (dia. x thickness) in(mm) | 59.06×2.99(1500×76) | 63×2.99(1600×76) | ||||||
| Main Brake | hydraulic disc brake | hydraulic disc brake, energy- consumption brake | hydraulic disc brake | hydraulic disc brake, energy- consumption brake | hydraulic disc brake | hydraulic disc brake, energy- consumption brake | ||
| Auxiliary Brake | DWS40L | WCBD236 | FDWS50LD | WCBD336 |
DS-70 |
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