Jining Donghong Machinery Co., Ltd
Quality supplier of drilling rig parts for Bomco,Lanzhou LS, Honghua, Sj petro, Rg Petro, Beijing BPM, Shenkai, Kingdream, CCDC

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AC Variable Frequency Motor Driven Drawworks

Brand：	LS-NOW
Model：	JC40DB,JC50DB,JC70DB,JC90DB
Present point：	0
Point offset：	0.0

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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(LWH) mm		423030002630	436032052825
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(LWH) mm		788632982695	930033003100
Weight kg		47500	65000

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Jining Donghong Machinery Co., LtdQuality supplier of drilling rig parts for Bomco,Lanzhou LS, Honghua, Sj petro, Rg Petro, Beijing BPM, Shenkai, Kingdream, CCDC

Jining Donghong Machinery Co., Ltd
Quality supplier of drilling rig parts for Bomco,Lanzhou LS, Honghua, Sj petro, Rg Petro, Beijing BPM, Shenkai, Kingdream, CCDC