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electric worm gear screw jacks
Motorized Electric Screw Jack Actuators Price

Electric screw jack actuators  is a basis jack-up part, accomplish the functions such as lifting, drop, push and inverting through worm gear drives screw.

electric worm gear screw jack lift
Two-set Linkage Screw Jack System

Two-set linkage screw jack system can be "L", I and T configuration.  It usually consists bevel gearbox, screw jack, electric motor, gear reducer, hand wheel, pillow block bearing, jaw coupling, line shafting.

 Automatic Screw Jack Lift System
Good Performance Screw Jack Lift System

Screw jack lift system structures include miter gearboxes, screw jacks, electric motor or gear reducer, hand wheel, pillow block bearings, jaw couplings and line shaftings.  Screw Jack System Features: 1. Heavy duty, self-locking, positioning precision, uniform lifting speed, fully synchronization, easy installation, easy operation 2. Two screw jacks system, three screw jacks system..forty screw jacks system. 3. Extremely high capacity requirements of need very precise up or down control. It's of high mechanical, they are an excellent choice when hydraulic, pneumatic or chain systems are prohibitive choices. 4. Widely used in wood working machines, plastics processing machines, textile machines, assembly equipment in the automobile and aircraft industries, food and beverage production equipment as well as packaging machines.

acme ball screw jacks screw lift
Four-set Linkage Screw Jacks System

Four-set linkage screw jack system can be  I and T configuration, transmission efficiency can be 85% .

worm screw jack lift table
High Efficiency Worm Gear Screw Jack Systems

Screw jack lift system structures include miter gearboxes, screw jacks, electric motor or gear reducer, hand wheel, pillow block bearings, jaw couplings and line shaftings.

SE enclosed housing slewing drive
Slewing Drive for Aerial platform

Slewing drives are powered with hourglass worm technology for maximum gear torque and the smoothest rotation.

Worm Gear Slewing Drive
Slewing Drive WE Series

WE Series Slewing drive is combined by the curved tooth slewing ring and worm, gear and worms are more touch supply larger torque.

spiral bevel gear unit
HD Series Spiral Bevel Gearbox

HD Series spiral bevel gearbox is hexahedron,which can fit different direction mounting.

worm gear ball and acme screw jacks
Worm Gear Screw Jack with reducer and motor

Screw jack is used in applications where linear motion is required. Lifting of any load, pushing or pulling of mechanical equipment, adjusting of tight clearances of mechanical parts can be done by screw jacks.

Spiral Gear screw jack
High-speed Lifting Bevel Gear Screw Jack

High-speed lifting bevel gear screw jacks are partly completed machines and intended for installation in complete machines or to be used for assembly with a totality of machinery to create systems.The bevel gear transmission makes high lifting speeds and a high duty cycle possible.

acme mechanical screw jacks lifts
Trapezoidal Machine Screw Jacks 5Ton

Worm Gear Machine Screws Jacks are common worm gear screw jacks,can be upright or inverted,with anti-rotation or self-locking functions.

high efficiency electric lift cylinder
Energy Saving Electric Linear Actuator with DC Motor

An Electric Linear Actuator is an actuator that creates motion in a straight line, in contrast to the circular motion of a conventional electric motor.

right angle bevel gearboxes
T Series Bevel Spiral Gearbox

T series bevel gearbox is standardized with many varieties. The deceleration ratio is 1:1, 1.5:1, 2:1, 2.5:1 and 3:1, which are all actual transmission ratios.

Acme Screw Linear Actuator
ACME Screw Linear Actuator with AC Motor

A Electric Linear Actuator is a mechanical device that converts energy (power from air, electricity or liquid) to create motion in a straight line.

ball screw electric cylinder
Ball screw lifting electric linear actuator

An electric linear actuator is a device that converts the rotational motion of a motor into linear motion – that is push and pull movements.

What's the difference between ball screw and acme screw?


Traditional types of lead screws include ball screw and acme screw, whose specification will be influenced by an actuator's configuration and load requirements.

Ball screw: All-steel ball screws consist of a screw shaft, ball nut with a ball recirculation system to convert rotary motion into smooth, accurate, and reversible linear motion  (or torque to thrust). The row of circular rolling elements is self-contained in a closed system between the nut and screw for a design exhibiting extremely low friction coefficients. The low frictional resistance minimizes wear, improves efficiency, and reduces operating temperature for longer service life. Ball screws can handle extreme loads, achieve high duty cycles, operate over a wide temperature range, and deliver the precision necessary to equip actuators performing over long periods at high speeds and requiring high dynamic capability. Brakes usually will be specified for ball screw actuators to prevent back-drive.

Acme screw: These screws transmit torque into linear motion through direct sliding friction. A typical assembly consists of a steel screw and plastic nut. Some of the products are equipped with acme screws with a relatively high friction coefficient that makes them well suited for self-locking application. Acme screw actuators accommodate high static load, withstand excessive vibration, operate quietly, and represent cost-effective solutions.

Generally , there’re five differences between ball screws and acme screws :

1.Transmission efficiency

The transmission efficiency of the ball screw is about 90~96%, and the transmission efficiency of the acme screw is about 26~46%. If you drive the same large load, you can use a smaller screw drive with a ball screw.

2. Drive speed

The ball screw is rolling friction, and the acme screw is sliding friction. When the work is done, the temperature rise of the former is much lower than that of the latter, so in general, it can undertake the task of high-speed transmission.

3. Service life

The surface damage of rolling friction is much smaller than that of sliding friction, so the ball screw has a much higher maintenance life than the acme screw when the conditions such as cleaning and lubrication are met.

4. Self-locking function

The self-locking property of the screw is generally inversely proportional to the transmission efficiency. Therefore, the ball screw is almost no self-locking function, and the acme screw has self-locking property.


From the previous and current situation, the ball screw is still more expensive than the acme screw because its structure is more complicated than the acme screw. However, as the number of automation equipment increases and the output increases, the price difference becomes smaller and smaller.

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