 |
| Quantity: | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Manual screw jack (hand wheel screw jacks, hand crank screw jacks, hand operated screw jacks) is driven by a hand wheel or crank or handle. The best advantage is suitable for heavy load, low speed, low service frequency. Our manual screw jacks have different configuration form and assembly type,and the lifting height can highly customized according to users’ demand, low cost and easy operation. | |||||||||
JTW-1T
JACTON
Manual screw jack (hand wheel screw jacks, hand crank screw jacks, hand operated screw jacks) is driven by a hand wheel or crank or handle. The best advantage is suitable for heavy load, low speed, low service frequency. Our manual screw jacks have different configuration form and assembly type,and the lifting height can highly customized according to users' demand, low cost and easy operation.
Hand Wheel Screw Jack is very popular for all kinds of applications. So when to use it?
1. 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 the connection of the handwheel. If a brake motor is used, the brake shall be un-clamped firstly, so to allow for movement.
2. Light load, low duty cycle, low-speed application.
3. Intermittent positioning applications.
How To Choose Handwheel For Manual Screw Jack?
Some people select any handwheel that rotates without careful consideration, but whether the design is right or wrong makes a significant difference in practical use.
The handwheel (handle)operating force(F)is calculated as follows:
F= input shaft torque/Handwheel radius.
Hand Wheel Screw Jacks Advantages
1. Easy installation to existing actuators.
2. All handwheels are bored, keyed, and set-screw drilled to the proper dimensions.
3. Revolving handle design for rotational ease.
4. Recessed hub and spoke design.
5. Cast iron material with chrome plating.
Product Material
We use the best materials to guarantee the performance and lifetime of the 1 ton manual worm gear screw jack for lifting 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
