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Brief introduction
Drawworks is an important part of a drilling rig. Drawworks come in many varieties and can include AC, DC or mechanical operations. The steel cable (drilling line) used in draworks can be used to hoist and lower hundreds of thousands of pounds of weight, including lifting steel pipes out of boreholes. Drawworks also come in a variety of power ratings that can range from 1000 HP to 3000 HP and above.
Drawworks Features:
• 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.

DC Drawworks will unitize with virtually any control system and driller’s cabin. This allows customer flexibility with different control and software vendors and respective support options. Our Drawworks is equipped with a direct drive gearbox that includes an electric motor driven, positive flow, external lubrication system.. Spring set air released braking system for parking and emergency braking. Electric motor driven positive flow external lubrication system. The main braking action of the drum assembly is controlled by the Drawworks AC drive motor and AC drive system.
Input power for our AC Drawworks is provided by one continuous Drawworks duty AC drive motor coupled to a gearbox. The gearbox provides a direct drive link between the AC drive motor and the drum assembly through a series of gear driven internal shafts. By design all shafts are engaged gear to gear at all times to provide one constant drive ratio. There are no gear change selections or neutral positions available for the gearbox. The drum assembly is joined to the gearbox output shaft using a keyless locking device that locks the drum shaft into the hollow shaft of the gearbox. The gearbox supports one end of the drum assembly while a pedestal mounted bearing supports the opposite end of the drum assembly.
DC Drawwork Specification:
Model | JC40D | JC50D | JC70D | JC90D | |
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)/ | 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 | 685x1138 | 770x1361 | 914x1556 (36x61 1/4) | |
Brake disc size (Dia. x width) mm(in) | 1500x40 | 1600x76 | 1600x76 | 1600x76 | |
Sand drum size (Dia. x width) mm(in) | 356x1245 | 356x1245 | 356x1245 | 356x1448 | |
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 | |

Packaging Details: WOODEN CASE, IRON CASE OR AS PER REQUIREMENTS
Shipping: BY AIR, SEA OR TRAIN.

1. For all your inquiries about our products, we will reply you in detail within 24 hours.
2. We have engineers who have more than 10 years’ experience to help you solve all the problems of technical.
3. We have a good translation, enthusiastic sales and service who can speak fluently in English and Russsain.
For further information plz contact me as follows:
It would be our pleasure to begin a business relationship with you and supply u with our quality products, as a professional manufacturer, i would like to introduce our products to you and offer you a quote.
Dongying Jintan petroleum Equipment Co., Ltd offers drilling rig and travelling system products for big oil fields over a long period of time. The company is 1st-class unit of China National Petroleum (Group) Equipment Corporation and Supplies and Assemblies Company of China Petroleum Corporation. Insisting on the development and innovation path with scientific progress as the core, company has been constanly absorbing advanced technology to quicken new product development. This company has established close technical cooperation relation with the oil field research institutes, designing institutes and various engineering technical departments throughout the country. For many years,we have achieved many scientific and thchnological achievements based on independent intellectual properties, filling up many blank both abroad and home.
Dongying Jintan Petroleum Machinery Co.,Ltd. is making great efforts in technology innovation,market innovation and management innovation to constantly enhance the comprehensive strength of company,in order to build it as one of the national R&D and production bases for petroleum tools. In addition, we will endeavor to provide better products and more excellent services and improve the strength of enterprise, so as to make greater contribution to the global petroleum tool induatry.

1. Are you factory or Trading Company?
We are factory. Our company is specialized in producing drilling and well servicing equipment, and is one of the net members applied for supplying the different oil equipments for Sinopec Group.
2. What’s your MOQ?
MOQ is 1 set.
3. What are your trade terms?
Payment term: TT 30% deposit before production, 70% balance before shipment.
4. What is your terms of delivery?
EXW, FOB, CFR, CIF, DDU.
5. Do you test all your goods before delivery?
Yes, we have 100% test before delivery
6. How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
7. What is your terms of payment?
1. T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
2. Trade Assurance.
3. Others depends on negotiation between two sides.
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