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

ProfileOur CertificateOur AdvantageMission StatementQuality Control SystemOilfield Equipment/Drilling Rig Parts/ComponentsHeavy Equip and PartsTruck-mounted drilling rigTrailer-mounted drilling rigModular drilling rigBigEasy drilling rigHelicopter drilling rigSJ PetroleumTruck-mounted drilling rigsRG Petro drawworksRG Hook blockRg petro traveling blockRg petro hookRg petro crown blockRg petro rotary tableRg petro swivelNanyang RG PetroleumDC electric drive drilling rigAC Variable-frequency electric drive drilling rigMechanical drive drilling rigCombined drive drilling rigLand drilling rigTruck mounted drilling & workover rigsBomco rotary tableBomco swivelBomco traveling blockBomco hooksBomco crown blockBomco drawworksBomco mud pumpBomco/Baoji OilfieldHonghua Crown blockHonghua SwivelHonghua HookHonghua drawworksHonghua traveling blockHonghua rotary tableSichuan HonghuaDC motor driven drilling rigAC Variable Frequency Motor Driven Drilling Rigs Mechan-Electric Drilling RigsMechanical Driven Drilling RigsLanzhou Crown BlockLanzhou Traveling blockLanzhou HookLanzhou Hook BlockLanzhou SwivelLanzhou Rotary TableLanzhou DrawworksLanzhou Eddy current brakeLanzhou Mud pumpLanzhou Compound Transmission UnitLanzhou MastLanzhou SubstructuresLanzhou LS-NOWBPM Control System for Surface Mounted BOP StacksBPM Top driveBPMF/BPM(Beijing Petroleum)Renqiu Boke(Forward)Hysun MarineGGPMF/DONGSU(BOP CONTROL)FlowroxShenkai BOPShanghai ShenkaiCasing spoolKilling manifoldChoke manifoldKingdream Gate valveKingdream Choke valveKingdream check valveChengde KingdreamDrawworks Hydraulic Disc BrakeCentrifugal pumpMud Pump PartsBOP превенторBOP Control UnitSolid Control EquipmentWellhead Equipment & ToolsDownhole ToolsDrilling Rig Components & OthersDrawworks and PartsOther PartsRG Water Drilling Rig PartsSafety ProductHP Flow Line ProductsCrown blockUniversal JointBearingHydraulicElectricalPneumaticsHigh pressure hoseBladder AccumulatorBomco
Product Detail
AC Variable Frequency Motor Driven Drawworks 
Brand: LS-NOW
Model: JC40DB,JC50DB,JC70DB,JC90DB
Present point: 0
Point offset: 0.0

AC Variable Frequency Motor Driven Drawworks


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

Nominal depth rang mø114mm drill pipe2500-40003500-5000
ø127mm drill pipe2000-32002800-4500
Rated input power kw7201440
No.*Rated Power (KW) of motors1*7202*720
Rated speed of motor r/min601600
Dia.of wire line mm3235
Max.pull of fast line kn275340
Drum(Dia.*Length) Band brake mm640*1139685*1138
Brake disc(Dia.*Width) mm1500*761500*76
Power of Motor for Auto Driller kw4545
Transmission ModeOne reduction single pinionOne reduction double pinion Two reduction double pinion
Auxillary brakeMotor dynamic brakingMotor dynamic braking
Overall dimension(L*W*H) mm4230*3000*26304360*3205*2825
Weight kg1860026000

Nominal depth rang mø114mm drill pipe4500-70006000-9000
ø127mm drill pipe4000-60005000-8000
Rated input power kw22002200
No.*Rated Power (KW) of motors2*11002*1100
Rated speed of motor r/min661500
Dia.of wire line mm3845
Max.pull of fast line kn485640
Drum(Dia.*Length) Band brake mm770*14391010*1839
Brake disc(Dia.*Width) mm1520*762100*76
Power of Motor for Auto Driller kw452*45
Transmission ModeTwo reduction double gear box driveTwo reduction double gear box drive
Auxillary brakeMotor dynamic brakingMotor dynamic braking
Overall dimension(L*W*H) mm7886*3298*26959300*3300*3100
Weight kg4750065000