Design Features
□Bearings are roller ones and shafts are made of alloy steel.
□On the drum there is a spiral groove.
□Auto feed driller.
□The hydraulic disc brake is regarded as main brake. The disc brake is water or air cooled.
□The auxiliary brake is of motor dynamic braking.
□Single shaft drawworks.
□Transmission is made by two-stage gear reducer and shifting-gear is manual done.
□The gear is pressure lubricated.
Basic parameters of VFD Single Shaft Drawworks
|
Modle
|
JC40D
|
JC50D
|
JC70D
|
JC90D
|
|
Nominal drill depth
|
￠114mm drill pipe
|
2500-4000
|
3500-5000
|
4500-7000
|
6000-9000
|
|
￠127mm drill pipe
|
2000-3200
|
2800-4500
|
4000-6000
|
5000-8000
|
|
Rated input power kW(hp)
|
720
|
1440
|
2200
|
3300
|
|
Number x Rated power(kW) of motors kW
|
1x720
|
2x720
|
2x1000
|
3x1100
|
|
Rated speed of motor r/min
|
601
|
600
|
661
|
661
|
|
Dia. of wire line mm(in)
|
32(1)
|
35(1)
|
38(1 )
|
45(1)
|
|
Max.pull of fast line kN
|
275
|
340
|
485
|
630
|
|
Drum(Dia x Length) mm(in)
|
Disc brake
|
640 x 1139
|
685 x 1138
|
770x 1439
|
914x 1556
|
|
(25x44)
|
(27x44)
|
30x56
|
36x61
|
|
Brake rim (Dia. x Width) mm(in)
|
1500x76
|
1500x76
|
1500x76
|
1800x76
|
|
(59x3)
|
(59x3)
|
(59x3)
|
(70x3)
|
|
Power of Motor for Auto Driller kW (hp)
|
45(60)
|
45(60)
|
45(60)
|
45(60)
|
|
Transmission Mode
|
One-reduction single-pinion
|
One-reduction double-pinion drive
Two-reduction double-gearbox drive
|
Two-reduction double-gearbox drive
|
Two-reduction double-gearbox drive
|
|
Auxiliary brake
|
Motor dynamic braking
|
Motor dynamic braking
|
Motor dynamic braking
|
Motor dynamic braking
|
|
Overall Dimension
|
4230×3000
|
4360×3205
|
7886×3298×2695
|
9300×3300×3100
|
|
(L×W×H) mm
|
×2630
|
×2825
|
|
Weight kg
|
18600
|
26000
|
47500
|
65000
|
|
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