Jack screw


Also found in: Wikipedia.
Related to Jack screw: Jack post, Lead screw

Jack screw

A Jack (number 3) with a heavy cast iron base and a large screw that can be turned to raise or lower a load.
References in periodicals archive ?
This modified screw is called a jack screw. It's a good idea to mount these jack screws directly to the mold.
Examination revealed the flap actuator jack screw position was consistent with a flaps-retracted setting.
Then, with the hopper tilted back by an electric jack screw, maintenance personnel can reach all areas of the cutting chamber.
The unit does not require a jack screw to adjust tool pressure.
Tenders are invited for Jack screw lifting 4 ton 195 mm closed height 445 mm open height 250 mm lift js 4552 part 1 table 1 part no lv6 mt1 5120 000355
Using a manual jack screw, the support boom and conveyor can be raised for discharging into vessels or other process equipment.
Tenders are invited for Adopting conveyor chain and tail end adjuster jack screw in place of hydraulic jack, repairing of broken body of fluid coupling of conveyor chain drive gear box, motor and resetting & alignment work of BWF make feeder breaker (local sl.no.-03) AA&DOCM, Dhori Area.
Limited Tenders are invited for Emi/Rfi Hood With Jack Screw - 240.000 No
Tenders are invited for Male Jack Screw To Emd Pt.No.40028053 Emd Drg.No.40028050 Rev A1, Fig 3 Emd Pt.No.40028053.
3 furrow disc plough with scrapersy Air bag simulator Arbor press hand operated 2 ton capacity Chain Pulley Block-3 ton capacity with tripod stand,Constant mesh gear box with stand Dismantling and assembly,ut section working model of automatic transmission Gear box, Demonstration board of electronic Ignition system, ignition coil Diesel engine ( Running condition ) Stationary tvpe,Distributor -Duel advance type, reluctance type Dual magnetization yoke : AC/ HWDC, 230 V AC, 50 Hz,Fuel feed pump for diesel Functional/experiment model of different type of sensors,Hand operated Hydraulic press,Injector cleaning unit Lifting jack screw type 20 Ton Liquid penetrant Inspection kit Multi Scan Tool With Oscilloscope Multi point fuel injection pump P.T.O.
Tenders are invited for Jack Screw 50 Pin D Type Connector Aal Part No.