Product Description
Design
Armed with the idea of the small in volume,; light in weight and novel in pattern,; we designed and developed the CHINAMFG series gear operators which are wildly applied in the area of valve automation control.; These kinds of products were specially designed used for butterfly valve,; ball valve and plug valve together with YSPHA series pneumatic actuator
Feature
1,; Easy connection:; There are 2 keyway apart 90¡ In the inner hole of worm gear so as to be convenient for customer to choose relative position between gear operator and valve.;
2,; Easy operating:; Pull out the position pin and rotate off center device with 180¡ To realize pneumatic drive by positioning pin acted or to realize manual drive in the opposite way.;
3,; Dustproof and waterproof:; The gear operator is filled with special lubricant before leaving the factory.; It is CHINAMFG sealed with valve after installation possessing dustproof and waterproof function with protecting grade IP65.;
4,; Many Output torques:; It consists of a series of products,; so output torque matches with all kinds of pneumatic devices and valves.;
Operating principle
1,; Assembling procedures:; The bottom of gear operator should be connected with valve,; bracket surface connected with cylinder (actuator);,; valve stem go through the inner hole of worm gear and the square on the end of stem matches with square hole of cylinder (actuator);.;
2,; Operating procedures:; The cylinder (actuator); drives valve stem and worm gear rotating together when pneumatic drive and worm shaft meshes with worm gear to drive valve stem rotating along with piston of cylinder (actuator); moving when manual drive.; When pneumatic drive,; pull out the pneumatic drive by worm gear rotating following with pneumatic valve stem.; Just make the worm shaft mesh to realize manual drive.;
| Gear Box Type | Ratio | Output (Torque Nm); |
Input (Torque Nm); |
Weight(KG); |
| EG350 | 44:;1 | 350 | 31.;25 | 6 |
| EG700 | 52:;1 | 700 | 50 | 16.;3 |
| EG1600 | 42:;1 | 1600 | 125 | 25 |
| EG3000 | 72:;1 | 3000 | 155 | 49.;5 |
| Casting Method: | Sand Casting |
|---|---|
| Casting Form Material: | Metal |
| Casting Metal: | Cast Iron |
| Casting Form Usage Count: | Permanent |
| Surface Treatment: | Polishing |
| Surface Roughness: | Ra0.05 |
| Customization: |
Available
| Customized Request |
|---|
Calculating Gear Ratio in a Worm Reducer
The gear ratio in a worm reducer is determined by the number of teeth on the worm wheel (also known as the worm gear) and the number of threads on the worm shaft. The gear ratio formula for a worm reducer is:
Gear Ratio = Number of Teeth on Worm Wheel / Number of Threads on Worm Shaft
For example, if the worm wheel has 60 teeth and the worm shaft has a single thread, the gear ratio would be 60:1.
It’s important to note that worm reducers have an inherent self-locking property due to the angle of the worm threads. As a result, the gear ratio also affects the mechanical advantage and the system’s ability to resist backdriving.
When calculating the gear ratio, ensure that the worm reducer is properly designed and that the gear ratio aligns with the desired mechanical characteristics for your application. Additionally, consider factors such as efficiency, load capacity, and speed limitations when selecting a gear ratio for a worm reducer.
Does a Worm Reducer Require Frequent Maintenance?
Worm reducers generally require less frequent maintenance compared to some other types of gearboxes due to their design and operating characteristics. However, maintenance is still essential to ensure optimal performance and longevity. Here are some key points to consider:
- Lubrication: Proper lubrication is crucial for worm gearboxes. Regularly check the lubricant level and quality to prevent wear and overheating. Lubricant should be changed as recommended by the manufacturer.
- Inspections: Periodically inspect the gearbox for signs of wear, damage, or oil leaks. Check for any unusual noises, vibrations, or changes in performance that could indicate a problem.
- Tightening and Alignment: Check and tighten any loose fasteners and ensure that the gearbox is properly aligned. Misalignment can lead to increased wear and reduced efficiency.
- Seal Maintenance: Inspect and maintain seals to prevent oil leakage and contaminants from entering the gearbox.
- Cleaning: Keep the gearbox clean from debris and contaminants that could affect its performance. Regular cleaning can prevent premature wear and damage.
- Load and Speed: Ensure that the gearbox is operating within its rated load and speed limits. Exceeding these limits can lead to accelerated wear and potential failure.
- Environmental Conditions: Consider the operating environment of the gearbox. Extreme temperatures, humidity, and other factors can impact the gearbox’s performance and longevity.
While worm gearboxes are known for their durability and self-locking feature, neglecting maintenance can lead to premature wear, reduced efficiency, and potential breakdowns. Following the manufacturer’s recommendations for maintenance intervals and procedures is essential to keep the worm reducer in optimal condition.
Preventing Backlash in a Worm Gearbox
Backlash in a worm gearbox can lead to reduced accuracy, positioning errors, and decreased overall efficiency. Here are steps to prevent or minimize backlash:
- High-Quality Components: Use high-quality worm gears and worm wheels with tight manufacturing tolerances. Precision components will help reduce backlash.
- Proper Meshing: Ensure the worm gear and worm wheel are properly aligned and meshed. Improper meshing can lead to increased backlash.
- Preload: Applying a small amount of preload to the worm gear can help reduce backlash. However, excessive preload can increase friction and wear.
- Anti-Backlash Mechanisms: Consider using anti-backlash mechanisms, such as spring-loaded systems or adjustable shims, to compensate for any inherent backlash.
- Lubrication: Proper lubrication can reduce friction and play a role in minimizing backlash. Use a lubricant that provides good film strength and reduces wear.
- Maintenance: Regularly inspect and maintain the gearbox to identify and address any changes in backlash over time.
It’s important to strike a balance between reducing backlash and maintaining smooth operation. Consulting with gearbox experts and following manufacturer guidelines will help you optimize your worm gearbox’s performance while minimizing backlash.
editor by CX 2023-09-23