draw works

• All bearings are roller bearing, all shaft material are alloy steel
• The chains are high precision and high strength chains with forced lubrication.
• The drum is grooved. The high speed end and low speed end of drum adopt pneumatic tube clutch; the brake drum and brake disk adopt forced water cooling; the brake drum and brake disk are case-hardening treated with excellent wear-resistance capacity and long service life.
• The tooth profile of sprocket is intermediate frequency hardening treated, all shifting clutch are involute spline type clutch
• The main brake is band brake or hydraulic disk brake, the auxiliary brake is eddy current brake (water-cooled or air-cooled).

2. DC Drawworks features

• All bearings are roller bearing, all shaft material are alloy steel.
• The drum is grooved. The high speed end and low speed end of drum adopt pneumatic tube clutch.
• The brake is hydraulic disk brake, water-cooled or air-cooled.
• The auxiliary brake is eddy current brake, water-cooled or air-cooled.
• Pneumatic gear changing
• Chain transmission construction
• The chain is oil-lubricated and the bearing is grease-lubricated.
• Split type construction

3. AC VF drawworks features

• All bearings are roller bearing, all shaft material are alloy steel.
• The drum is grooved.
• Automatic feeding device
• The main brake is hydraulic disk brake, water-cooled or air-cooled.
• The auxiliary brake is dynamic brake.
• Single-shaft drawworks
• Dual stage gear reducer transmission, manual gear change
• The gear is oil-lubricated