jack bolts for motor alignment

Jack Bolts for Motor Alignment

screw jack

Jack bolts are commonly used in motor alignment due to their effectiveness and ease of use. In this article, we will explore the various applications and working principles of jack bolts, as well as the differences between screw jacks and hydraulic jacks, and how to choose or customize the right screw jack for your needs.

What is a Screw Jack Used for?

screw jack

  • Motor Alignment: Screw jacks are widely used in motor alignment to ensure that the motor shaft and driven equipment are properly aligned with each other. This helps to prevent any vibration, noise, or premature wear and tear on the equipment.
  • Lifting and Lowering: Screw jacks are also used for lifting and lowering heavy equipment and machinery, such as presses, tables, and conveyors.
  • Adjusting Height: Screw jacks can be used to adjust the height of equipment and machinery, such as work tables, conveyors, and platforms.
  • Stabilization: Screw jacks are used for stabilizing equipment and machinery, such as industrial ovens, drying racks, and other heavy equipment that must remain stationary during operation.
  • Tensioning: Screw jacks can also be used for tensioning applications, such as in the textile industry, where they are used to adjust the tension on weaving looms and other textile machinery.

What is the Working Principle of Screw Jack?

screw jack

The working principle of a screw jack is based on the concept of a simple machine called the screw. A screw is essentially a long, threaded rod that turns within a nut, which is a threaded block. When the screw is turned, the nut moves along the length of the screw, either up or down, depending on the direction of rotation. This movement can be used to lift heavy objects or apply pressure to other objects.


A screw jack consists of several components, including:

  • Screw: The threaded rod that rotates to provide linear motion.
  • Nut: The threaded block that moves along the screw.
  • Worm Gear: A gear that meshes with the screw and provides a high torque reduction ratio.
  • Worm Wheel: A gear that meshes with the worm gear and provides the output torque.
  • Bearing: A component that supports the rotating screw and takes the load.
  • Housing: A structure that holds the screw jack assembly in place and provides support.

What is the Difference Between a Screw Jack and a Hydraulic Jack?

The main difference between a screw jack and a hydraulic jack is the mechanism used to provide linear motion. Screw jacks use a rotating screw to provide linear motion, while hydraulic jacks use pressurized hydraulic fluid to move a piston, which in turn provides linear motion. Screw jacks are generally slower but more precise, while hydraulic jacks are faster but less precise.

How to Choose or Customize the Right Screw Jack?

screw jack

When choosing or customizing a screw jack, there are several factors to consider:

  • Load: The weight of the equipment or object that the screw jack will be used to lift or move.
  • Speed: The desired speed of operation.
  • Travel: The distance the screw jack needs to travel to achieve the desired lift or motion.
  • Environment: The conditions in which the screw jack will be used, such as temperature, humidity, and exposure to chemicals or other corrosive substances.
  • Mounting: The method of mounting the screw jack, such as base or flange mounting.

Introducing HZPT Screw Jack

As a leading manufacturer of industrial motors, gearboxes, and drives, HZPT has a wide range of high-quality screw jacks that can meet the needs of any application. Our products are designed and manufactured to the highest standards, using only the best materials and the latest technologies. Here are just a few of the advantages of using HZPT screw jacks:

  • Precision: Our screw jacks provide accurate and precise linear motion, ensuring that your equipment and machinery are properly aligned and stabilized.
  • Strength: Our screw jacks are capable of lifting and moving heavy loads with ease, thanks to their sturdy construction and high-quality components.
  • Reliability: Our screw jacks are built to last, with durable materials and a design that minimizes wear and tear.
  • Customization: We can customize our screw jacks to meet the specific needs of your application, with a wide range of options for load, speed, travel, and mounting.
  • Expertise: Our team of experienced engineers and technicians can provide expert advice and support throughout the entire process, from design and development to installation and maintenance.

Find us

Ep Screw Jack Co., Ltd.

Mail: [email protected]

As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.