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Drawworks[explain in detail]


Parameters of Drawworks
●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 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 involutes spine type.
●The drawworks can be equipped with either a band or disc brake system. The auxiliary brake can be equipped with either an eddy brake or an EATON brake.

Specification of Mechanical driver Drawworks
Type JC20 JC30 JC40 JC50 JC70
Range of Driling Depth Φ114mm Stem 1200-2000 1600-3000 2500-4000 3500-5000 4500-7000
Φ127mm Stem 1100-1800 1500-2500 2000-3200 2800-4500 4000-6000
rated power 440(600) 550(750) 735(1000) 1100(1500) 1470(2000)
Max.fastline Pull 200 210 275 340 485
Dia.Ofwire line Φ29(1 1/8) Φ29(1 1/8) Φ32(1 1/4) Φ35(1 3/8) Φ38(1 1/2)
Brake of Drum Groove(Dia.×Length) Φ560×1120
(22×44)
Φ560×1005.72
(22×39 3/5)
Φ640×1142
(251/4×45)
Φ685×1245
(27×49)
Φ770×1436
(30×56 1/2)
Brake rim(Dia.×Length) Φ1067×267
(42×10 1/2)
  Φ1168×265
(46×10 1/2)
Φ1270×267
(50×10 1/2)
Φ1370×267
(54×10 1/2)
Brake Disc (Dia.×Length)   Φ1400×40
(55×1 3/5)
Φ1500×76
(59×3)
Φ1600×76
(63×3)
Φ1600×76
(63×3)
Auxiliary Brake SDF20(风冷) FDWS30 FDWS40 DS50 DS70
Overall Dimension(length×width×height) 2450×5500×2545 2450×5500×2545 6600×2890×2670
6450×3553×2429
7000×2955×2780 7930×3194×2930
weight 7528 24120 29000/28000 45210 43000

Specification of Driver Drawworks
Type JC40D JC50D JC70D
Range of Driling Depth Φ114mm Stem 2500-4000 3500-5000 4500-7000
Φ127mm Stem 2000-3200 2800-4500 4000-6000
rated power 735(1000) 1100(1500) 1470(2000)
Max.fastline Pull 275 340 485
Dia.Ofwire line Φ32(11/4) Φ35(13/8) Φ38(11/2)
Size of Drum Groove(Dia.Length) Φ640×1139
(25 1/4×44 7/8)
Φ685×1245
(27×44 7/8)
Φ770×1361
(30×53 1/2)
Brake Disc (Dia.×Length) Φ1500×76
(59×1 1/2)
Φ1600×76
(63×3)
Φ1600×76
(63×3)
Auxiliary Brake DS40 DS50 DS70
Overall Dimension(length×width×height) 6600×3716×2900 6800×4537×2998 7670×4585×3197
weight 40000 48000 61000

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