| Customization: | Available |
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| After-sales Service: | Online Service |
| Warranty: | 12 Months |
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A Draw works is the primary hoisting machinery that is a component of a rotary drilling rig. Its main function is to provide a means of raising and lowering the traveling blocks. The wire-rope drilling line winds on the draw works drum and extends to the crown block and traveling blocks, allowing the drill string to be moved up and down as the drum turns. The segment of drilling line from the draw-works to the crown block is called the "fast line". The drilling line then enters the sheaves of the crown block and it makes several passes between the crown block and traveling block pulleys for mechanical advantage. The line then exits the last sheave on the crown block and is fastened to a leg on the other side of the rig floor. This section of drilling line is called the "dead line".
Consist: Drum and shaft assembly, brake system, cathead assembly, transmission assembly, Control system, lubrication system etc.
1. All sheaves and shafts are made of alloy steel.
2. Chains are pressure lubricated.
3. Drum is grooved. The low-speed & high-speed ends of the drum shaft are equipped with ventilating pneumatic tube clutch.
4. 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.
5. The main brake is hydraulic disc brake, and the auxiliary brake is electromagnetic eddy current brake.
| Model Parameters |
JC40 | JC40D | JC40DB | JC50 | JC50D | JC50DB | JC70 | JC70DB |
| Rating Impute Power hp (kW) |
1000(735) | 1500(1100) | 2000(1470) | |||||
| Max. Fast line Pull lbf.(kN) |
61820(275) | 76435(340) | 109030(485) | |||||
| Dia. of Drill Line in (mm) |
1 1/4(32) | 1 3/8(35) | 1 1/2(38) | |||||
| 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 | |||
1) How can I place order?
A: You can contact us by email about your order details, or place order on line.
2) How can I pay you?
A: After you confirm our PI, we will request you to pay. T/T and Western Union are the most usual ways we are using.
3) What's the order procedure?
A: First we discuss order details, production details by email or TM. Then we issue you an PI for your confirmation. You will be requested to do pr -epaid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 15-25days if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you.
4)How do you take care when your clients received defective products?
A: replacement. If there are some defective items, we usually credit to our customer or replace in next shipment.
5)How do you check all the goods in the production line?
A: We have spot inspection and finished product inspection. We check the goods when they go into next step production procedure.
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