Design Features of mechanical drawworks:
l  All bearings are roller bearings. Shafts of drawworks are made of alloy steel.
l  Chains with forced lubrication can transmit with high accuracy and high strength.
l  Drum of drawworks is grooved. Ventilating air clutches constitute the high and low speed ends.
l  Brake drum (brake disc) is forcedly cooled with circulating water.
l  Drawworks surface is intermediate-frequency quenching-treated, and is durable.
l  Tooth profile of sprocket is intermediate-frequency quenching-treated. Involute-spline-tooth type clutch is used as shifting clutch.
l  Main brake is band brake or disk brake, auxiliary brake is Electromagnetic eddy current brake (water-cooled or air-cooled).
 
Specifications of Mechanical Drawworks

型   号Model		JC40	JC50	JC70
名义钻深范围 Nominal rig123.net' target='_blank'>drilling depth, m(ft)	Ф114mm(41/2 ”)钻杆 with Ф114mm(41/2 I”) DP	2500-4000(8200-13100)	3500-5000(11500-16400)	4500-7000（14800-23000）
	Ф127mm(5 ”)钻杆 with Ф127mm(5 ”) P	2000-3200（6600-10500）	2800-4500（9200-14800）	4000-6000（13100-19700）
额定功率 Rated power, kW (hp)		735 (1000)	1100 (1500)	1470 (2000)
最大快绳拉力 Max. fastline pull, kN（kips）		275(61.79)	340(76.40)	485(108.98)
钢丝绳直径 Dia. of drilling line, mm(in)		32 (1  1/4 )	35 (1  3/8 )	38 (1  1/2)
滚筒尺寸(直径×长度) Drum size (D×L), mm (in)		640 ×1235 (25  1/4 ×48  1/2)	685×1245 (27 ×49 )	770×1436 (30 ×56  1/2 )
刹车轮毂尺寸(直径×宽度) Brake hub size(D ×W), mm(in)		1168×265 (46 ×10  1/2 )	1270×267 (50 ×10 1/2 )	1370×267 (54 ×10 1/2 )
刹车盘尺寸(直径×宽度) Brake disc size (D×W), mm(in)		1500×76 (59 ×3)	1600×76 (63 ×3 )	1600×76 (63 ×3 )
捞砂滚筒尺寸(直径×长度) Sand drum size(D ×L), mm(in)		356×1245 (14×49 )	356×1430 (14 ×56  1/4 )	356×1430 (14 ×56  1/4 )
捞砂滚筒容量 (Ф14.5钢丝绳) Sand drum capacity(with Ф14.5 wireline), m(ft)		3500 (11480 )	4500 (14760 )	6000 (19685 )
辅助刹车 Auxiliary brake		Electromagnetic eddy current brake/Eaton brake 电磁涡流刹车/伊顿刹车	Electromagnetic eddy current brake/Eaton brake 电磁涡流刹车/伊顿刹车	Electromagnetic eddy current brake/Eaton brake 电磁涡流刹车/伊顿刹车
外形尺寸(长×宽×高) Dimension(L×W×H), mm(in)		6450×2560×2482 (254×101×98)	7000×2955×2780 (276×116×109)	7930×3194×2930 (312×126×115)
重量 Weight, kg(lbs)		28240(62259)	45210(99670)	43000(94800)

 
 



 
 Design Features of DC drawworks:
l  All bearings are roller bearings. Shafts of drawworks are made of alloy steel.
l  Drum of drawworks is grooved. Ventilating air clutches constitute the high and low speed ends.
l  Main brake of drawworks is hydraulic disc brake. The disc of brake is cooled by water or air.
l  Auxiliary brake is Electromagnetic eddy current brake, cooled by water or air.
l  Being shifted though air clutch.
l  Being transmitted through chains.
l  Chains are lubricated forcedly by thin oil, bearings are lubricated by grease.
l  Split construction.
 
Specifications of DC Drawworks:

型  号Model		JC40D	JC50D	JC70D
名义钻深范 Nominal drilling depth, m(ft)	Ф114mm(41/2”)钻杆 with Ф114mm(41/2 ”) DP	2500-4000(8200-13100)	3500-5000(11500-16400)	4500-7000(14800-23000)
	Ф127mm(5 ”) 钻杆 with Ф127mm(5”) DP	2000-3200(6600-10500)	2800-4500(9200-14800)	4000-6000(13100-19700)
额定功率 Rated power, kW(hp)		735 (1000 )	1100 (1500 )	1470 (2000 )
电机台数×额定功率 Qty. of motors ×rated power ,kW(hp)		2 ×400（544）/ 1 ×800（1088）	2 ×600（816）	2 ×800（1088）
电机额定转速 Rated speed of motor, r/min		880/970	970	970
钢丝绳直径 Dia. of drilling line, mm(in)		32 (1 1/2  )	35 (1 3/8 )	38 (1 1/2  )
最大快绳拉力 Max. fastline pull, kN(kips)		275(61.79)	340(76.40)	485(108.36)
主滚筒尺寸(直径×长度) 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)
刹车盘尺寸(直径×宽度) Brake disc size (D×W), mm(in)		1500×40 (59 ×1 1/2 )	1600×76 (63 ×3 )	1600×76 (63 ×3)
捞砂滚筒尺寸(直径×长度) Sand drum size(D×L), mm(in)		356×1245 (14 ×49 )	356×1245 (14×49 )	356×1245 (14 ×49 )
捞砂滚筒容量(Ф14.5钢丝绳) Sand drum capacity (with Ф14.5 wireline), m(ft)		4000 (13120 )	5000 (16400 )	6400 (21000 )
辅助刹车Auxiliary brake		Electromagnetic eddy current brake/Eaton brake 电磁涡流刹车/伊顿刹车	Electromagnetic eddy current brake/Eaton brake 电磁涡流刹车/伊顿刹车	Electromagnetic eddy current brake/Eaton brake 电磁涡流刹车/伊顿刹车
外形尺寸(长×宽×高) Overall dimension(L×W×H), mm(in)		6600×3716×2990 (260×146×118)	6800×4537×2998 (268×179×118)	7670×4585×3197 (302×181×126)
重量 Weight, kg(lps)		40000(88185)	48000(105820)	61000(134480)

 
 
 
 

 
 Design Features of AC VF drawworks:
l  All bearings are roller bearings. Shafts of drawworks are made of alloy steel.
l  Drum of drawworks is grooved.
l  Equipped with automatic driller.
l  Main brake of drawworks is hydraulic disc brake, The disc of brake is cooled by water or air..
l  Auxiliary brake is dynamic brake.
l  This drawworks is single shaft type.
l  Being transmitted through two-stage gear reducer and manually shift.
l  Gears are lubricated by thin oil.
 
 Specifications of AC VF Drawworks:

型    号Model		JC40DB	JC50DB	JC70DB
名义钻深范围 Nominal drilling depth, m(ft)	Ф114mm(41/2 ”)钻杆 with Ф114mm(41/2”) DP	2500-4000(8200-13100)	3500-5000(11500-16400)	4500-7000(14800-23000)
	Ф127mm(5”)钻杆 with Ф127mm(5 ”) DP	2000-3200(6600-10500)	2800-4500(9200-14800)	4000-6000(13100-19700)
额定功率Rated power, kW (hp)		735 (1000 )	1100 (1500 )	1470 (2000 )
电机台数×额定功率 Qty. of motors×rated power, kW (hp)		2×400(544)/1 ×800(1088)	2×600(816)	2×800(1088)
电机额定转速Rated speed of motor, r/min		660	660	660
钢丝绳直径Dia. of drilling line, mm(in)		32 (1 1/4  )	35 (1 3/8  )	38 (1 1/2 )
最大快绳拉力Max. fastline pull, kN （kips）		275(61.79)	340(76.40)	485(108.36)
主滚筒(直径×长度)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 )
刹车盘(直径×宽度) Brake disc size (D×W), mm(in)		1500×76 (59 ×3)	1600×76 (63×3)	1520×76 (59 3/4)
自动送钻电机功率 Motor power of automatic driller, kW (hp）		45（60）	45（60）	45（60）
传动方式Transmission type		单级齿轮传动 Single-stage gear Transmission	双级齿轮传动 Double- stage gear Transmission	双级齿轮传动 Double- stage gear Transmission
辅助刹车Auxiliary brake		能耗制动 Energy consumption brake	能耗制动 Energy consumption brake	能耗制动 Energy consumption brake
外形尺寸（长×宽×高) Overall dimension(L×W×H),mm（in）		4230×3000×2630(167×118×104)	5500×3100×2650(217×122×104)	4570×3240×2700(180×128×106)
重量Weight, kg（lbs）		18600(41005)	22500(49605)	30000(66140)

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