1.Performance Table  2.Main features for acme screw jack SWL screw jack is suitable for low speed and low frequency. Main components:Precision trapezoid screw pair and high precision worm-gear pair. 1.Economical: Compact design,easy operation,convenient maintenance. 2.Low speed and low frequency Be suitable for heavy load,low speed,low service frequency. 3.Self-lock Trapezoidal screw has self-lock function,it can hold up load without braking device when screw stops traveling. 4. Widely applied in industries such as machinery, metellurgy, construction and hydraulic equipment. 5. Top End: top plate, clevis end, threaded end, plain end

About Manual Worm Gear Table Lift, we offer models 1ton,  2.5ton  and 5ton screw jack mechanism.

Electric machine screw jack,also called motorized machine screw jack, is very popular for lifting.

Lifting table is an common appliance of Hand Crank Screw Jack . We offer 1ton, 2.5ton and 5ton screw jack mechanism.

For Trapezoidal screw jack, there are two method to realize the anti-rotation function.

screw jack is a gearbox assembly (either worm gear or bevel gear) and a transmission product (lead screw, ball screw or roller screw) which through use of a motor is used to convert rotary into linear motion.

Manual Screw Jack is ideal solutions for applications where electricity or power generators is inconvenient or dangerous, light weight, low duty cycle, low target cost and short travel length.

Manual Screw Jack is composed of hand wheel or hand crank and a worm gear screw jack.It is ideal solutions for applications where electricity or power generators is inconvenient or dangerous.

Trapezoidal Lead Screws Broad, strong Acme threads make these screw jacks better than ball screw jacks for heavy loads, intermittent positioning applications, and where vibration is present. Screw jacks 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. Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.

These jacks have a fixed length lifting screw that rotates . Loads are attached to a flanged “traveling” nut that translates up and down the length of the rotating screw . This type of jack is ideal for applications that cannot accommodate a screw protection tube or that require a flush mount .

A screw jack is a device used to apply a force, push and pull, or move to a position and hold by mechanically converting rotary motion into linear motion.

JWM (Trapezoid screw) LOWSPEED LOW FREQUENCY JWM (trapezoidal screw) is suitable for low speed and low frequency. Main components: Precision trapezoid screw pair and high precision worm-gears pair. Economical: Compact design, easy operation, convenient maintenance. Low speedjow frequency: Be suitable for heavy load, low speed, low service frequency.