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Machine Screw Jacks - 20 Ton
Machine Screw Jacks are used wherever precisely controlled lifting, lowering, tilting, and slewing movements are required in an efficient and reliable operation. Jacks are available in one of four standard end conditions or special ends to meet your requirements and are equipped with anti-backlash feature; they are rated at full capacity under static conditions.
Product Code
Company Name
Joyce Dayton Corp
Country of Manufacture
General Information

 Please click on Product Spec and identify the correct Jack capacity and Type. You may send your Business Enquiry.

Machine Screw Jacks - 20 Ton Total SKUs (5)
ModelCapacityScrewDiameterWorm Gear RatioTurns for 1inch Travel Price
ModelCapacityScrewDiameterWorm Gear RatioTurns for 1inch Travel Price
WJ82020 Ton2 1/28:116
Each (USD $)
WJ242020 Ton2 1/224:148
WJ252020 Ton2 1/225:1100
DWJ82020 Ton2 1/28:110.67
DWJ242020 Ton2 1/224:132

Product Description

 Machine Screw Jacks lift and precisely positionall kinds of loads from 250 pounds to 250 tons. Upright or inverted, these precision jacks operate at full capacity whether the load is in tension or compression. WJ and RWJ series single lead jacks are self-locking under full lifting capacity. DWJ and DRWJ double lead series jacks offer increased travel speed. Alloy steel input shafts, aluminum bronze worm gears and tapered roller or ball thrust bearings provide rugged reliability. Double input shafts are standard. Single input shafts are available with right or left hand extension or additional length. Jacks are available with one of four standard end conditions or special ends to meet your requirements. All jack designs

can be fitted with protective boots. An optional anti-backlash feature compensates for thread wear, assuring minimum play between lifting screw and worm gear for smooth, precise operation. Jacks equipped with the anti-backlash feature are rated at full capacity under static conditions. 
Machine Screw Jacks in several designs including:
  • Translating
  • Double clevis
  • Trunnion
  • Keyed for non-rotation

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