Drawworks

Mechanical Drawworks

Features of Mechanical DrawworksMechanical Drawworks
  • All bearings are roller bearings.  Shafts are made of alloy steel.
  • Chain drive transmits with high accuracy and high strength and has forced lubrication.
  • The drum is grooved.  Ventilating air clutches constitute the high and low speed ends.
  • The brake drum (brake disc) is cooled with circulating water.
  • Main brake is band brake or disk brake, the auxiliary brake is eddy current brake (water-cooled or air-cooled.)
  • The surface is hardened with middle frequency induction, and is very durable for long life.
  • The sprocket tooth profile is hardened with middle frequency induction.  Involute serration tooth clutch works as a shifting clutch.
Spec. of Mechanical Drawworks

Model

JC40 JC50 JC70
Nominal drilling depth
m

Ф114mm(41/2 in) DP

2500-4000 3500-5000 4500-7000

Ф127mm(5 in) DP

2000-3200 2800-4500 4000-6000

Rated power kW(hp)

735 (1000) 1100 (1500) 1470 (2000)

Max. fastline pull kN

275 340 485

Dia. of wineline mm(in)

32 (1 1/4 ) 35 (1 3/8 ) 38 (1 1/2)

Drun size(D×L) mm(in)

640 ×1235
(25 1/4 ×48 1/2)
685×1245
(27 ×49 )
770×1436
(30 ×56 1/2 )

Brake drum size(D ×W) mm(in)

1168×265
(46 ×10 1/2 )
1270×267
(50 ×10 1/2 )
1370×267
(54 ×10 1/2 )

Brake disc(D×W) mm(in)

1500×76
(59 ×3)
1600×76
(63 ×3 )
1600×76
(63 ×3 )

Sand drum size(D ×L)
mm(in)

356×1245
(14×49 )
356×1430
(14 ×56 1/4 )
356×1430
(14 ×56 1/4 )

Sand drum capacity(Ф14.5 wireline) m(ft)

3500 (11480 ) 4500 (14760 ) 6000 (19685 )
Auxiliary brake DS40 DS50 DS70

Dimension(L×W×H) mm

6450×2560×2482 7000×2955×2780 7930×3194×2930

Weight kg

28240 45210 43000

DC Drawworks

Features of DC DrawworksDC Drawworks
  • All bearings are roller bearings.  Shafts are made of alloy steel.
  • The drum is grooved.  Ventilating air clutches constitute the high and low speed ends.
  • The brake is hydraulic disc brake and is water-cooled or wind-cooled,
  • The auxiliary brake is eddy water-cooled or wind-cooled current brake.
  • Shifting is through the air clutch.
  • Chain  transmission structure.
  • Chains are lubricated by thin oil, bearings are lubricated by grease.
  • Split construction.
Spec. of DC Drawworks
Model JC40D JC50D JC70D JC90D
Nominal drilling depth
m
Ф114mm(41/2 in) DP 2500-4000 3500-5000 4500-7000 6000-9000
Ф127mm(5 in) DP 2000-3200 2800-4500 4000-6000 5000-8000

Rated power kW (hp)

735 (1000 ) 1100 (1500 ) 1470 (2000 ) 2210 (3000 )

Qty. of motor ×rated power kW (hp)

2 ×438(537)/
1 ×800(1072)

2 ×800(1072) 2 ×800(1072) 3 ×800(1072)

Rated speed of motor r/min

880/970 970 970 970

Dia. of wireline mm (in)

32 (1 1/2 ) 35 (1 3/8 ) 38 (1 1/2 ) 45 (1 3/4 )

Max. fastline pull kN

275 340 485 630

Main drum size (D×L) mm (in)

640×1139
(25 1/4 ×44 7/8 )
685×1138
(27 ×44 7/8 )
770×1361
(30 ×53 1/2)
914×1556
(36 ×61 1/4)

Brake disc size (D×W) mm (in)

1500×40
(59 ×1 1/2 )
1600×76
(63 ×3 )
1600×76
(63 ×3)
1600×76
(63 ×3 )

Sand drum size(D×L) mm (in)

356×1245
(14 ×49 )
356×1245
(14×49 )
356×1245
(14 ×49 )
356×1448
(14 ×57 )

Sand drum capacity (Ф14.5 wireline) m (in)

4000 (13120 ) 5000 (16400 ) 6400 (21000 ) 7500 (24600 )
Auxiliary brake DS40 DS50 DS70 DS90

Dimension(L×W×H) mm

6600×3716×2990 6800×4537×2998 7670×4585×3197 7874×5486×2997

Weight kg

40000 48000 61000 70000

AC-VFD Drawworks

AC-VFD DrawworksFeatures of AC-VF Drawworks

  • All bearings are roller bearings with shafts made of alloy steel
  • Grooved drum
  • Automatic driller
  • Main brake is water-cooled or wind-cooled,
  • hydraulic disc brake
  • Auxiliary brake is dynamic brake
  • Single shaft construction
  • Transmitted through two-stage gear reducer with manual shift
  • Gears lubricated by thin oil
Spec. of AC-VFD Drawworks
Model JC40DB JC50DB JC70DB JC90DB
Nominal drilling depth
m
Ф114mm(41/2 in) DP 2500-4000 3500-5000 4500-7000 6000-9000
Ф127mm (5 in) DP 2000-3200 2800-4500 4000-6000 5000-8000
Rated power kW (hp) 735 (1000 ) 1100 (1500 ) 1470 (2000 ) 2210 (3000 )
Qty. of motor ×rated power kW (hp) 1 ×720 2 ×720 2 ×1100 3 ×1100
Rated speed of motor r/min 601 660 660 660
Dia. of wireline 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
Main drum size (D×L) mm (in) 640×1139
(25 1/4 ×44 7/8 )
685×1138
(27 ×44 7/8 )
770×1439
(30 ×53 1/2 )
914×1556
(36 ×61 1/4 )
Brake disc size (D×W) mm (in) 1500×76
(59 ×3)
1600×76
(63×3)
1520×76
(59 3/4)
1800×76
(70 7/8 ×3)
Power of automatic feeding motor
kW (hp)
45(60) 45(60) 45(60) 45(60)
Dimension (L×W×H) mm 4230×3000×2630 5500×3100×2650 4570×3240×2700 6000×3400×2906
Weight kg 18600 22500 30000 42000