The SA Ratchet Torque Limiter is a precision-engineered mechanical device designed to protect machinery from overload damage by disengaging or slipping when torque exceeds a preset limit. It is widely used in industrial applications such as conveyor systems, manufacturing equipment, and automotive assembly lines to ensure operational safety and longevity. The ratchet mechanism provides reliable, repeatable performance, making it a critical component in maintenance and safety protocols.
Below are the detailed specifications of the SA Ratchet Torque Limiter, presented in a list for clarity and a table for easy reference.
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Torque Range | 5 - 2000 | Nm | Adjustable via calibration tool |
| Accuracy | ±5% | - | Of set value |
| Operating Temperature | -20 to +80 | °C | Ideal for industrial settings |
| Material | Alloy Steel | - | With anti-corrosion treatment |
| Weight | 0.5 - 15 | kg | Depends on model |
| Mounting | Flange/Shaft/Gear | - | Multiple options available |
| Response Time | < 10 | ms | Fast disengagement |
| Lifespan | > 1,000,000 | Cycles | Under standard conditions |
The SA Ratchet Torque Limiter is utilized across multiple industries to prevent mechanical failures. Common applications include:
Here are some frequently asked questions to help users understand the product better.
How do I calibrate the torque setting on the SA Ratchet Torque Limiter?
Calibration is performed using a dedicated torque wrench or calibration tool. First, ensure the limiter is unloaded. Adjust the setting knob or screw to the desired torque value, referencing the calibration chart provided in the manual. It's recommended to verify the setting with a torque tester for accuracy, especially after initial installation or maintenance.
What maintenance is required for the SA Ratchet Torque Limiter?
Regular maintenance includes visual inspection for wear, lubrication of moving parts every 500 operating hours, and torque calibration checks every 1,000 hours or as per operational intensity. Replace any worn components, such as springs or ratchets, immediately to maintain performance. Always follow the manufacturer's guidelines to avoid downtime.
Can the SA Ratchet Torque Limiter be used in explosive environments?
Yes, but only if it is certified for such conditions. Standard models are not intrinsically safe. For explosive atmospheres, specify an ATEX or IECEx certified version during purchase, which includes non-sparking materials and additional safety features to comply with industry regulations.
What is the difference between a ratchet-type and friction-type torque limiter?
A ratchet-type limiter, like the SA model, uses a mechanical ratchet and pawl system to disengage abruptly at the set torque, providing precise, repeatable action. Friction-type limiters slip continuously under overload, offering smoother operation but with less accuracy and potential for wear over time. The choice depends on application needs for precision versus gradual slip.
How do I troubleshoot if the limiter is slipping prematurely?
Premature slipping often indicates incorrect calibration, wear, or contamination. First, recalibrate the torque setting. Inspect for dirt or debris in the mechanism and clean if necessary. Check for worn parts, such as the ratchet teeth or springs, and replace them. Ensure the operating environment is within specified temperature and humidity ranges to avoid material expansion or contraction issues.
Is the SA Ratchet Torque Limiter compatible with high-speed applications?
The SA limiter is designed for moderate speeds, typically up to 1000 RPM. For high-speed applications exceeding this, consult the technical datasheet or contact support for customized solutions. High speeds may require special balancing or materials to prevent vibration and ensure reliability.
Proper installation is crucial for optimal performance. Follow these steps:
