Product Description
Model: XHW85PG4 worm gearbox for valve
Double stage
Application
XHW part turn worm gearboxes are applied to dampers, ball valves, butterfly valves and also other 90° quarter turn valves. XHW part turn worm gear operator has variety models of hand wheel for optional.
Operating Environment
XHW part turn worm gearboxes are with good mechanical quality and steady operating performance which apply to deal with variety climate and temperature. We strive to develop RHW part turn worm gear operators to meet higher demands.
Enclosure: IP67
Working Temperature: From -20ºC to 120ºC( -4ºF to 248ºF)
Painting: Silver grey (Customization)
Introduction
XHW series Part-turn Gearboxes use worm and worm wheel revolute pairs, with high performance needle roller bearing assembled on both ends of the worm shaft. It ensures the thrust requirement during rotation. It’s in high mechanical efficiency withstands big torque, small size with compact design, and it’s also easy to operate and has reliable self-locking function.
Characters
1.Precision casting ductile iron housing
2.Optional output torque, range up to 32000Nm
3.High efficient needle roller bearing
4.High strength steel input shaft
5.Stroke 0°- 90°( ±5°)
6.Compact structure
7.Grease filled for longer life
8.Adjustable stopper (±5°)
9.Good seal
Connect with valve
The flange connecting to valve is according to ENISO5210 or DIN3210(Customization)
Main Products
Worm gearbox, bevel gearbox, valve gear box, worm gear operator, worm gear actuator, valve worm gear, valve gear operator, valve gear actuator, valve actuator
Gear Operator, Valve Gearbox, Worm Gearbox, Gearbox, Speed Reducer, Part-turn Worm Gearbox, Worm Gearbox Supplier, High Quality Worm Gearbox, Gearbox manufacturer
(XHW85-PG6S)
| Application: | Industry |
|---|---|
| Type: | Worm and Wormwheel |
| Painting: | Silver Grey or Customization |
| Manipulate Way: | Manual Operation |
| Material: | Cast Iron |
| Working Temperature: | -20 to 120 Degrees Celsius |
| Customization: |
Available
| Customized Request |
|---|
Self-Locking Properties in a Worm Gearbox
Yes, worm gearboxes exhibit self-locking properties, which can be advantageous in certain applications. Self-locking refers to the ability of a mechanism to prevent the transmission of motion from the output shaft back to the input shaft when the system is at rest. Worm gearboxes inherently possess self-locking properties due to the unique design of the worm gear and worm wheel.
The self-locking behavior arises from the angle of the helix on the worm shaft. In a properly designed worm gearbox, the helix angle of the worm is such that it creates a mechanical advantage that resists reverse motion. When the gearbox is not actively driven, the friction between the worm threads and the worm wheel teeth creates a locking effect.
This self-locking feature makes worm gearboxes particularly useful in applications where holding a load in position without external power is necessary. For instance, they are commonly used in situations where there’s a need to prevent a mechanism from backdriving, such as in conveyor systems, hoists, and jacks.
However, it’s important to note that while self-locking properties can be beneficial, they also introduce some challenges. The high friction between the worm gear and worm wheel during self-locking can lead to higher wear and heat generation. Additionally, the self-locking effect can reduce the efficiency of the gearbox when it’s actively transmitting motion.
When considering the use of a worm gearbox for a specific application, it’s crucial to carefully analyze the balance between self-locking capabilities and other performance factors to ensure optimal operation.
Materials Used for Worm Gears
Worm gears are manufactured using a variety of materials to meet different application requirements. Some commonly used materials for worm gears include:
- Steel: Steel is a popular choice for worm gears due to its strength, durability, and wear resistance. It can handle heavy loads and is often used in industrial applications.
- Bronze: Bronze offers good lubricity and is commonly used for the worm gear (worm) component. It provides effective wear resistance and works well in applications where quiet operation is essential.
- Cast Iron: Cast iron is known for its high strength and durability. It’s often used for worm gears in applications where shock loads or heavy-duty conditions are expected.
- Aluminum: Aluminum worm gears are lightweight and corrosion-resistant, making them suitable for applications where weight reduction is important.
- Plastic: Some worm gears are made from plastic materials such as nylon or acetal. These materials are often chosen for their self-lubricating properties and quiet operation.
- Composite Materials: Composite materials can offer a combination of properties, such as lightweight construction and corrosion resistance. They can be suitable for specific applications.
The choice of material depends on factors such as the application’s load, speed, operating environment, and required performance characteristics. It’s important to consider these factors when selecting the appropriate material for worm gears to ensure optimal performance and longevity.
Types of Worm Gear Configurations and Their Uses
Worm gear configurations vary based on the arrangement of the worm and the gear it engages with. Here are common types and their applications:
- Single Enveloping Worm Gear: This configuration offers high torque transmission and efficiency. It’s used in heavy-duty applications like mining equipment and industrial machinery.
- Double Enveloping Worm Gear: With increased contact area, this type provides higher load capacity and improved efficiency. It’s used in aerospace applications, robotics, and precision machinery.
- Non-Throated Worm Gear: This type has a cylindrical worm without a throat. It’s suitable for applications requiring precise motion control, such as CNC machines and robotics.
- Throated Worm Gear: Featuring a throat in the worm, this configuration offers smooth engagement and higher load capacity. It’s used in conveyors, elevators, and automotive applications.
- Non-Modular Worm Gear: In this design, the worm and gear are a matched set, resulting in better meshing and efficiency. It’s utilized in various industries where customization is essential.
- Modular Worm Gear: This type allows interchangeability of worm and gear components, providing flexibility in design and maintenance. It’s commonly used in conveyors, mixers, and material handling systems.
Selecting the appropriate worm gear configuration depends on factors such as load capacity, efficiency, precision, and application requirements. Consulting gearbox experts can help determine the best configuration for your specific needs.
editor by CX 2023-09-22