 |
| Quantity: | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Because Ball Screw Type Power Jacks and High Lead Screw Type Screw Jacks are not equipped with a self-lock, the input shaft may be reversed by a load, therefore, it is dangerous to use the hand wheel. Must add the locking clamping device when manual ball screw jacks. | |||||||||
JTB-5T
JACTON
manual ball screw jack 5 ton features: Low-friction ball bearings allow these screw jacks to use half the power required by an Acme screw jack to lift the same load. Typically used as actuators, they run at higher speeds than Acme screw jacks. They come assembled, threaded, and ready for hookup. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads.
Because Ball Screw Type Power Jacks and High Lead Screw Type Screw Jacks are not equipped with a self-lock, the input shaft may be reversed by a load, therefore, it is dangerous to use the hand wheel. Must add the locking clamping device when manual ball screw jacks.
The screw jack makes it possible to transform the rotary motion provided by an electric, pneumatic, or hydraulic motor or even a handwheel, into linear motion that allows push or pull vertical lifting and horizontal positioning. They can be used to lift, pull, move, or align any type of load with perfect synchronism, which is difficult to achieve with other types of actuators.They can be applied either with vertical mountings facingup or down, or with horizontal mountings.
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
Our standard jacks use Trapezoidal screw and have self-locking function which is very safe for manually operated by hand. We have different models for your selection, our jtw series machine screw jack is the most cost-effective selection for this application. You can also use digital position indicators if you need more precise position display. It can measure the rotations of the input shaft and display the corresponding position in the digital counter window. The display value per input shaft revolution is variable and is achieved through a series of gear reductions configured to accommodate different worm gear screw jack ratios, screw pitch, and travel length.
Product Material
We use the best materials to guarantee the performance and lifetime of the manual ball screw jack 5 ton you purchased.
Ball screw and nut is made from hardened alloy steel with hardened bearing balls carrying the load between nut and screw.
* Housing: High-strength Casting Housing, Ductile Iron.
* Ball Screw: SCM 450, S55C, Hardness: HRC 58-62.
* Ball Nut: SCM415H, Hardness: HRC 58-62
* Ball: SUJ2, Hardness: HRC 60 UP.
* Input Shaft (Worm): C45 Steel in high frequency heat treatment process. Custom Stainless Steel 304 or 316.
* Worm Wheel: 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.
* 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
