AC Variable Frequency Motor Driven Drawworks
Features:
1.Bearings are roller ones and shafts made of alloy steel.
2.On the drum there is a spiral groove.
3.Auto feed driller.
4.The hydraulic disc brake is regarded as main brake.The disc brake is water or air cooled.
5.The auxiliary brake is of motor dynamic braking.
6.Single shaft drawworks.
7.Transmission is made by two-stage gear reducer and shifting gear is manual done.
8.The gear is pressure lubricated.
Parameters of AC Variable Frequency Motor Driven Drawworks
Model | JC40DB | JC50DB | |
Nominal depth rang m | ø114mm drill pipe | 2500-4000 | 3500-5000 |
ø127mm drill pipe | 2000-3200 | 2800-4500 | |
Rated input power kw | 720 | 1440 | |
No.*Rated Power (KW) of motors | 1*720 | 2*720 | |
Rated speed of motor r/min | 601 | 600 | |
Dia.of wire line mm | 32 | 35 | |
Max.pull of fast line kn | 275 | 340 | |
Drum(Dia.*Length) Band brake mm | 640*1139 | 685*1138 | |
Brake disc(Dia.*Width) mm | 1500*76 | 1500*76 | |
Power of Motor for Auto Driller kw | 45 | 45 | |
Transmission Mode | One reduction single pinion | One reduction double pinion Two reduction double pinion | |
Auxillary brake | Motor dynamic braking | Motor dynamic braking | |
Overall dimension(L*W*H) mm | 4230*3000*2630 | 4360*3205*2825 | |
Weight kg | 18600 | 26000 |
Model | JC70DB | JC90DB | |
Nominal depth rang m | ø114mm drill pipe | 4500-7000 | 6000-9000 |
ø127mm drill pipe | 4000-6000 | 5000-8000 | |
Rated input power kw | 2200 | 2200 | |
No.*Rated Power (KW) of motors | 2*1100 | 2*1100 | |
Rated speed of motor r/min | 661 | 500 | |
Dia.of wire line mm | 38 | 45 | |
Max.pull of fast line kn | 485 | 640 | |
Drum(Dia.*Length) Band brake mm | 770*1439 | 1010*1839 | |
Brake disc(Dia.*Width) mm | 1520*76 | 2100*76 | |
Power of Motor for Auto Driller kw | 45 | 2*45 | |
Transmission Mode | Two reduction double gear box drive | Two reduction double gear box drive | |
Auxillary brake | Motor dynamic braking | Motor dynamic braking | |
Overall dimension(L*W*H) mm | 7886*3298*2695 | 9300*3300*3100 | |
Weight kg | 47500 | 65000 |