Products

Our company is SAIFU VIET NAM COMPANY LIMITED, located in Vietnam. It mainly engages in the production and sales of transmission parts and agricultural machinery accessories, including gearbox, chain&sprocket, pulley, gears, pto shaft, trailer&trailer parts, agricultural machine&parts.

PTO Torque Limiters

What Are PTO Torque Limiters?

PTO torque limiters are mechanical devices designed to protect power take-off (PTO) shafts and connected equipment from damage caused by torque overloads. They automatically disengage or slip when the torque exceeds a preset limit, preventing costly repairs and downtime in agricultural, industrial, and automotive applications.

Key Product Parameters

Our PTO torque limiters are engineered with precision to ensure reliability and efficiency. Below are the detailed specifications presented in lists and tables for clarity.

Material Composition

Housing: High-grade cast iron or aluminum alloy for durability and corrosion resistance.
Internal Components: Heat-treated steel for wear resistance and long service life.
Seals: Nitrile rubber to prevent contamination and maintain lubrication.
Spring Mechanism: Alloy steel calibrated for consistent torque settings.

Performance Specifications

Parameter	Value Range	Units
Torque Capacity	50 to 2000	Nm
Operating Speed	Up to 1000	RPM
Engagement Type	Mechanical slip or disengagement	-
Temperature Range	-20 to 80	°C
Weight	0.5 to 15	kg

Installation Dimensions

Model Series	Shaft Diameter (mm)	Length (mm)	Bolt Pattern
TL-100	25	120	4x M8
TL-200	35	150	4x M10
TL-300	45	180	6x M12

Applications of PTO Torque Limiters

PTO torque limiters are versatile and used in various sectors to safeguard machinery. Common applications include:

Agricultural equipment: Tractors, balers, and combines.
Industrial machinery: Conveyors, pumps, and generators.
Automotive systems: Drivetrains and auxiliary power units.
Marine equipment: Propulsion systems and winches.

Frequently Asked Questions (FAQ)

How does a PTO torque limiter work?
A PTO torque limiter operates by using a spring-loaded mechanism that holds engagement under normal torque. When torque exceeds the preset limit, the mechanism slips or disengages, interrupting power transmission to prevent damage. It resets automatically or manually after the overload is resolved.

What maintenance is required for PTO torque limiters?
Regular maintenance includes visual inspections for wear, checking torque settings with a calibration tool, and lubricating moving parts as per the manufacturer's guidelines. Typically, maintenance should be performed every 500 hours of operation or annually, whichever comes first.

Can the torque setting be adjusted?
Yes, most models allow torque adjustment through a calibrated spring or shim system. It's essential to use the correct tools and follow the product manual to ensure accurate settings and avoid compromising safety.

What are the signs of a failing torque limiter?
Common signs include inconsistent slipping under normal load, unusual noises during operation, visible wear on components, or failure to disengage during overloads. Immediate inspection and replacement are recommended to prevent equipment failure.

Are PTO torque limiters compatible with all PTO shafts?
Compatibility depends on the shaft size, torque capacity, and mounting specifications. Our products are designed to meet standard ISO and SAE dimensions, but it's crucial to verify model compatibility based on your equipment's requirements before installation.

How do I choose the right torque limiter for my application?
Selecting the appropriate limiter involves calculating the maximum torque required for your system, considering factors like peak loads, operating speed, and environmental conditions. Consult the product datasheets or contact technical support for guidance based on your specific needs.