Trapezoid Screw Jacks JWM Series for Lifting Equipment

Trapezoid Screw Jacks JWM Series for Lifting Equipment
Trapezoidal screw jacks(also named acme screw jacks or self-locking screw jacks) having high gear ratios and standard design are generally self-locking. They will hold loads without back driving in the absence of vibrations. JWM series trapezoid screw jacks are suitable for low speed and low frequency. A trapezoidal screw jack is an essential jack-up part that accomplishes the functions such as lifting, dropping, pushing, and inverting through worm gear drives screw. Compact configuration, small size, lightweight, convenient installation, flexible operation, high reliability and stability, a long service life, more connection form, etc.
The JWM series electrical motors, alternating or direct currents, and hydraulic or pneumatic motors can drive trapezoidal screw jacks. Also, they can be driven manually or with any other type of transmission.

JWM Series Trapezoid Screw Jacks Specifications Parameter:

JWM Series Trapezoid Screw Jack Dimensions Drawing:

1. JWM010 Series Trapezoid Screw Jacks

2. JWM025 Series Trapezoid Screw Jacks

3. JWM050 Series Trapezoid Screw Jacks

4. JWM100 Series Trapezoid Screw Jacks

5. JWM150 Series Trapezoid Screw Jacks

6. JWM200 Series Trapezoid Screw Jacks

7. JWM300 Series Trapezoid Screw Jacks

8. JWM750 Series Trapezoid Screw Jacks

Structure of JWM Series Trapezoidal Screw Jack:

JWM Series Trapezoid Screw Jacks Features:

JWM screw jacks are trapezoidal screw jacks; the trapezoid screw pairs have high precision and high worm-gear pairs.
1. Model: JWM010, JWM025, JWM050, JWM100, JWM150, JWM200, JWM300, JWM500, JWM750, JWM1000.
2. Journey: 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000mm.
3. It is suitable for low-speed and low frequency
4. Main components: Precision trapezoid screw pair and high precision worm-gears pair
5. Compact design, easy operation, convenient maintenance
6. It is suitable for heavy load, low speed, low service frequency
7. Trapezoid screw has a self-lock function; it can hold up the load without breaking the device when the screw stops traveling.
8. Accessory parts: Motor, hand wheel, rubber bellows, steel cover, frequency inverter, and brake.
9. Application: Metallurgy, construction, irrigation, chemical industry, healthcare, etc.

Application of Trapezoidal Screw Jack

Trapezoid screw jacks are widely used in many industries, such as chemical, medical, cultural, health, etc. And from the various parts of the device, it can be learned that such devices features in many aspects. In order to have a better understanding of the device, people are supposed to have a more comprehensive knowledge of them.

Trapezoidal Screw of Screw Jack Processing Requirements

What are the processing requirements for the trapezoidal screw of the screw jack: the screw jack is composed of a worm wheel and a worm. There are threads inside the worm gear, which can cooperate with trapezoidal screws or ball screws. This mechanism is self-locking and can drive heavy objects with a small force. At the same time, this mechanism converts rotary motion into linear motion, so the staggered angle of the worm gear is usually 90°. In this mechanism, the worm is generally used as the active part, while the worm wheel is used as the driven part. To achieve the action of the screw rod rising and falling.

The screw part of the screw jack is also an essential part, and in the elevator, because it meshes with the nut to realize the transmission movement, its processing requirements are very high. Today we will talk about the processing requirements of the trapezoidal screw.
1. When processing or assembling, the knurling knife should move quickly in the groove without too much gap. Because if the gap is too large, the hob will tilt during operation, and the rolled-out screw will have uneven threads, which will affect the accuracy, and at the same time, the service life cannot be guaranteed.
2. When the screw is on the lathe, it is necessary to open the lathe first, start it, let the workpiece rotate, and then tighten the screw to prevent the workpiece from slipping.
3. When the lathe is running, do not cool the hob to prevent damage to the alloy knife.
4. The choice of material is also critical. If low-quality round steel is used, the wear of the hob will increase, and the accuracy of the screw is not guaranteed.
5. Regularly check the knife groove. If you have any questions about model selection, please get in touch with our technical engineers, who will give you accurate answers.

We are the factory with the ability to customize the trapezoid screw jacks to your specific requirements for your application. Please share detailed information including your use scenario, required loading capacity, reduction ratio, power source, stroke length, and other requests. Our sales and technical team will provide solutions and drawings for your confirmation.

Trapezoid Screw Jacks Model Selection Guide:

• Step 1: select the corresponding model according to your load capacity requirements,
• Step 2: confirm the reduction ratio: 1/6, 1/12, or 1/24. If you need a special speed ratio, please contact our sales team.
• Step 3: Determine the head form of the screw, there are cylinder type, nut type, flange type, thread type, and flat head type for your option.
• Step 4: confirm the screw length or stroke you need. The default stroke is 500mm, and the screw length can be customized according to different needs.
• Step 5: confirm the accessories you need, such as matching motors, hand wheels, protection tubes for screws, dust cover, anti-rotation functions, nuts, etc.

Contact us now to get your customized trapezoid screw jacks.

Professional Trapezoid Screw Jack Manufacturer

With over 30 years of professional manufacturing experience, our specialized workers always produce trapezoid screw jacks with refined craftsmanship and consistent quality. Whether working on large volume orders or simply 1 set, our standardized production process makes sure you get the same level of high-quality trapezoid screw jacks at a short lead time.

• • Well-trained Staffs
  • Extensive Manufacturing experience
  • Fully-equipped Production Workshop
  • Well-established manufacturing standard

FAQ

Q: What is the difference between a trapezoidal worm gear screw jack and a ball screw jack?
A: The trapezoidal screw jack uses a threaded acme screw that is typically self-locking, meaning it will hold its position without a brake. Ball screw jacks incorporate ball screws to convert rotary motion to linear movement. Ball screw jacks are inherently more efficient, requiring 1/3 horsepower compared to trapezoidal worm gear jacks.
Q: What is a Translating or Keyed-Type Screw Jack?
A: This type of jack has a key fixed to the jack housing and inserted into a keyway milled into the lifting screw which forces the screw to translate through the gearbox housing without rotating.
Q: What is a Rotating or Traveling Nut-Type Screw Jack?
A: This design incorporates a lifting screw keyed to the worm gear as a single unit, forcing the lifting screw to rotate in the gearbox, but not translate. A traveling nut, running on the rotating screw generates linear motion for the attached load. This type of jack is ideal for applications that cannot accommodate a screw protection tube.
Q: operated in multiple unit systems:
A: Yes, easily configured in systems, motorized and manual, to raise and lower a load in unison.
Q: Can a worm gear screw jack be operated at high speed?
A: Input power should not exceed the KW rating in specification tables. Maximum gearbox speed should not exceed 1,800 rpm.