Xi'An Tiptop Machinery Co., Ltd.
Xi'an Tiptop Machinery Co., Ltd. Oilfield Comprehensive Solution Provider One-Stop Procurement Service Provider Downhole Drilling Tools Expert
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Oil Rig Equipment Oil Well Drilling Rig Hoisting Mechanism API 4F Drawwork
Drawworks is necessary hoisting mechanism on a drilling rig. Essentially, drawworks is one large winch that spools off or takes in the drilling line and thus raises or lowers the drill stem and bit.
Features
* Bearings are rolling ones and shafts are made of alloy steel.
* Chains with high accuracy and high strength are pressure lubricated.
* On the drum there is a spiral groove. The low-speed & high-speed ends of drum shaft are equipped with a ventilating air clutch. The brake rim (or disc) is water cooled and the surface is intermediate frequency quenched, which increases long service life.
* The contours of the sprocket teeth are intermediate frequency quenched. All clutches of shifting gears are of involute spline type.
* A band or disc brake is regarded as main brake and an eddy current brake (water or air cooled) as auxiliary brake.
| Model | JC40 | JC50 | JC70 | |
| Nominal Depth Range (m) | 114mm Drill Pipe | 2500-4000 | 3500-5000 | 4500-7000 |
| 127mm Drill Pipe | 2000-3200 | 2800-4500 | 4000-6000 | |
| Rated Input Power kw (hp) | 735 (1000) | 1100 (1500) | 1470 (2000) | |
| Max. pull of fast line (kn) | 275 | 340 | 485 | |
| Dia. Of wire line mm (in) | 32 (1 1/4'') | 35 (1 3/8'') | 38 (1 1/2'') | |
| Band Brake Drum (Dia x Length) mm | 640x1139 | 685x1138 | 770x1361 | |
| Brake Disc (Dia x Width) mm | 1500x76 | 1600x76 | 1600x76 | |
| Auxiliary Brake | DS40 | DS50 | DS70 | |
| Overall Dimension (LxWxH) mm | 6450x2560x2482 | 7000x2955x2780 | 7930x3194x2930 | |
| Weight (kg) | 28240 | 45210 | 43000 | |
