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| Axially moving trapezoidal screw. Rotating trapezoidal screw with travelling nut. To determine the correct size of screw jack it is necessary to know the load and required lifting speed. A significant proportion of the applied power is used in overcoming the friction between the trapezoidal screw and nut. These losses are converted into heat, and therefore either the speed, load or duty factor must be limited in order to avoid overheating of the screw jack. For this reason ball screw jacks can be used – either at higher speeds or for higher duty factors. For screw jack arrangements in which several screw jacks, differential gears, couplings etc. are combined, regard must be paid to losses in the various elements and to alignment errors. | |||||||||
JTM200
JACTON
Product Description
200 kN Worm Gear Screw Jack-Trapezoidal Screw Type-65x12. Worm gear screw jacks with trapezoidal-threaded spindle produce a stroke of 1.5 mm for each full revolution of the worm shaft. Accordingly the linear speed is 2250 mm per min at 1500 rpm. Worm gear screw jacks with trapezoidal-threaded spindle produce a stroke of 0.5 mm for each full revolution of the worm shaft. Accordingly the linear speed is 750 mm per min at 1500 rpm. Please note that higher speeds of travel can be achieved by using spindles with larger thread pitches or multi-start threads. The worm gear screw jack's maximum drive speed of 1500 rpm must not be exceeded.
Main Features
* Maximum static load capacities 200 kN (40000 lbs).
* Self-locking trapezoidal screw sizes Tr 65x12.
* Two gear ratios: high ratio 1:8, slow ratio 1:24.
* Custom stroke length, maximum stroke 4000 mm in compression load, 5000 mm in tension load.
* Basic designs: Translating screw, Keyed screw, and Rotating screw.
* Upright or Inverted mounting. Available in tension or compression loads.
* Standard with 1-start thread screw, custom 2-starts threads screw which offers increased travel speed and require a brake or external locking device to hold position.
* Screw end fittings: top plate, clevis end, threaded end, plain end, fork head and rod end.
* Power source: manually by hand wheel and crank handle, electrically by motor drive, or both together.
* Can be applied either individually use or combined into a exactly synchronized lifting system(multiple jack systems), linked by connecting shafts, bevel gearboxes, couplings, electric motors, gear reducers, limit switches and pillow blocks etc.
* Custom double clevis screw jack, trunnion mount screw jack, and anti-backlash screw jack.
* Can be used as alternatives to hydraulic and pneumatic systems.
Product Material
We use the best materials to guarantee the performance and lifetime of the 200 kN Worm Gear Screw Jack-Trapezoidal Screw Type you purchased.
* Housing: High-strength Casting Housing, Ductile Iron. Custom Stainless Steel 304.
* Acme Screw: C45 Steel as Standard. Custom Stainless Steel 304 or 316.
* Input Shaft (Worm): C45 Steel in high frequency heat treatment process. Custom Stainless Steel 304 or 316.
* Worm Gear / Travelling Nut / Safety Nut: ZQAl9-4 (Casting aluminum bronze) as Standard. Custom ZCuSn10Pb1(Casting tin bronze).
* Bearing: Anti-friction Ball Thrust Bearings for Worm Gear. Anti-friction Ball Bearings for Input Shaft(worm). Custom Stainless Steel 304.
* Motor Flange Adapter: High-strength Casting Motor Adapter, Ductile Iron. Custom Stainless Steel 304 or 316.
* Lubricants: Synthetic Grease, Extreme Pressure EP2 Lithium Grease.
Download
Speficications | Dimensional Drawings | Selection Guide | Catalog
Application Case
Worm Gear Screw Jack Applications in Paper, press, printing industry, Gypsum factories, Sheet metal forming machinery, Mechanical lifting applications, Platform lifting applications, Food processing machinery, Construction sector, Bridge jacks for road and bridge lifting, Shipyards, Opening and closing of penstocks, Industrial process, Roll form machinery, Mining industry, Defense industry, Lift tables, and Stage setup applications.
Packaging and Shipping
* 100% standard exporting plywood cases (international exporting standard wooden material with free fumigation).
* Express(Air): Factory to customers' company by FEDEX, DHL, UPS, TNT. Incoterms: EXW, DDU.
* Sea Freight: Factory to destination seaport by Vessel. Incoterms: CIF, FOB, EXW, CFR.
* Air Freight: Factory to destination airport by Airplane. Incoterms: CFR, EXW, FCA, CPT, CIP.
* Additional Options (Door to Door): Train Transportation, Truck Transportation, Ocean Shipping.
