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| When to use manual screw jack? In case of power failure, screw jacks can be moved manually via a handwheel. To do this, one input shaft shall be available on the screw jack for connection of the handwheel. | |||||||||
JTC50
JACTON
50 kN manual lifting screw jack Features: Cubic housing, load capacity 50 kN, self locking trapezoidal screw diameter 40mm, pitch 7mm, upright mount, translating screw type, stroke 500mm, ratio 7:1 (one rpm input travel length 1mm), threads end attaches rod end bearing, double input shafts, attached protect pipe, and hand wheels diameter 300 mm.
When to use manual screw jack?
In case of power failure, screw jacks can be moved manually via a handwheel. To do this, one input shaft shall be available on the screw jack for connection of the handwheel. If a brake motor is used, the brake shall be un-clamped firstly, so to allow for movement. Acme screw jack since ball screw jack is not self-locking and hand wheels do not include a brake.
The manually operated hand crank worm gear screw jack is the most economical and efficient mechanism for lifting, lowering, pushing or pulling the load. It can be used as a single unit or in multiple configurations driven by handwheels or hand cranks.
Product Material
We use the best materials to guarantee the performance and lifetime of the 50 kN manual lifting screw jack you purchased.
* Housing: High-strength Casting Housing, Ductile Iron.
* Lifting 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
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
