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| The screw jack is sealed and filled with a synthetic lubricant. In normal operation, the gearbox is lubricated for life. The trapezoid thread spindle must be inspected regularly and re-lubricated according to the operating cycle. In the case of long-life systems (for example, working platforms or theatre stages) the grease loses its lubrication properties after approx. 5 years. Dust and dirt enhance this effect. We recommend a complete cleaning and re-greasing after 5 years. | |||||||||
JTM150
JACTON
Product Description
150 kN Worm Gear Screw Jack-Trapezoidal Screw Type-55x10. Trapezoid screw jack has self protection (self-lock) function. It has excellent safety such as prevent falling. Efficiency of ball screw jack is high and can be make smaller backlash but no self-locking feature, expensive. Self-locking feature and safety design for wide variety of application. It is possible to hold the screw shaft even if power failed due to effectiveness of self-locking feature of using trapezoid screw. It consists of worm gear and screw jack (30 degree trapezoid screw), suitable for special heavy load, and have sufficient holding force. Worm wheel (nut) rotate by turning input shaft and that transmit rotating force into the thrust of screw shaft. The lubrication of screw shaft is grease. Using tapered roller bearing that can hold both radial and thrust load. High precision worm wheel Special aluminum bronze material, high precision cut, sufficient strength. Light weight housing of fabricated by aluminum, light weight and compact. Sufficient strength for connection of multiple jacks.
Main Features
* Maximum static load capacities 150 kN (30000 lbs).
* Self-locking trapezoidal screw sizes Tr 55x10.
* Two gear ratios: high ratio 1:8, slow ratio 1:24.
* Custom stroke length, maximum stroke 3500 mm in compression load, 4500 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 150 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.
