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JACTON INDUSTRY CO.,LTD.
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Hand Crank Screw Jack Classic Design

Hand Crank Screw Jack Classic Design

Country/Region china
Company JACTON INDUSTRY CO.,LTD.
Categories Hand Crank Led Flashlight
Update 2019-01-16 07:04:14
ICP License Issued by the Chinese Ministry
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Hand Crank Screw Jack Classic Design

Model: JT-0.5T to JT-20T
Brand Name: Jacton
Order QuantityMOQ 1pc Acceptable
Product OriginGuangdong, China
Assembly Drawing3D (stp, step, model, igs), 2D (dwg, dxf), PDF
Delivery Time10-15 Working Days After Payment
Payment MethodsT/T, PayPal, Western Union, MoneyGram
Transportation Modes: Air Freight, Sea Freight
Shipment PortShenzhen, Guangzhou, Hongkong
PackagesStrongest Exporting Plywood Cases
Description:
Hand crank screw jack (also known as a hand crank jack screw, a hand crank screw lift, a hand crank worm gear screw jack, or a hand crank screw actuator) is the most economical and efficient mechanism for lifting and lowering loads, for push-pull applications where electricity or power generators is inconvenient or dangerous. Hand crank screw jack has intermittent precisely positioning and self-locking feature for no creeping down without brake mechanism or locking systems. Note: Hand crank does not include a brake and therefore are not for use with ball screw jacks.
Hand crank screw jack working principle is worm screw (also known as input shaft) is rotated manually operated by a hand crank, worm gear is rotated by the worm screw, the trapezoidal lifting screw moves through the rotating worm gear. The hand crank screw jack linear motion speed of trapezoidal lifting screw depends on thread size and rotation ratio of worm gears. Hand crank is available in a range of diameters from 100mm to 900mm and can be adapted for use on screw jacks from 0.5 ton up to the 20 ton capacity model, if larger than 20 ton capacity models, we don't suggest use hand crank manually operated.
In order to precise position display of the travel length, the hand crank screw jack worm screw adds a digital position indicator which measures the rotation of the worm screw and display a corresponding position in a counter window. The display value per input shaft revolution is variable and is achieved through a series of gear reductions configured to accommodate different screw jacks worm gear ratios, screw pitch and travel distances. Note: not for use with motorized applications.
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worm gear screw jack

      
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