In the world of hydraulic motion control, the Helac-style helical rotary actuator represents the pinnacle of compact, high-torque engineering. Unlike traditional rack-and-pinion systems, helical actuators utilize a sliding spline technology that converts linear piston motion into powerful shaft rotation. This design eliminates internal leakage and provides exceptional holding power without the need for external brakes.
At WEITAI Hydraulic, we have mastered this complex geometry. Our WL and L series are engineered to replace multiple components—bearings, brackets, and linkages—simplifying your bill of materials while increasing machine reliability in harsh environments.
Engineered for excellence, built for durability.
Delivers massive rotational force in a compact footprint, ideal for space-constrained construction machinery.
All moving parts are submerged in oil and sealed, ensuring protection against dust, debris, and corrosion.
Our internal sliding splines provide hydraulic locking, holding positions perfectly under heavy loads.
Eliminates the need for external bearings or structural support, reducing total assembly costs.
Acts as a hydraulic fuse, preventing mechanical damage during extreme impact or overload conditions.
As a leading Chinese manufacturer with over 20 years of expertise, WEITAI Hydraulic combines the cost-efficiency of the Asian supply chain with Western quality standards. Our facility is ISO 9001 certified, utilizing advanced CNC machining and heat treatment processes that rival top global brands.
The industry is shifting towards Electrification and Smart Automation. WEITAI is at the forefront, integrating sensor technology into our helical actuators for precise feedback in autonomous construction equipment.
Providing 180° to 360° platform rotation with smooth, jerk-free motion for operator safety at heights.
Heavy-duty WL series actuators powering drill positioning and roof bolting in the world’s most aggressive environments.
Corrosion-resistant finishes and high-sealing standards for crane slewing and steering systems.
Enabling precision steering and implement folding for next-generation smart tractors and harvesters.
Years Experience
Actuator Models
Countries Served
Factory Tested
The WL series is optimized for foot-mount applications requiring extremely high torque, while the L series offers flange-mount versatility and is often used in slewing applications for aerial platforms.
Absolutely. We specialize in OEM/ODM services. Our engineering team can modify shaft diameters, mounting patterns, and rotation angles (e.g., 200°, 220°, or custom) to fit your machine's chassis.
Every actuator undergoes 100% functional testing. We use high-grade alloy steel with precision grinding and heat treatment to ensure the sliding splines withstand millions of cycles without failure.
Samples are usually ready within 7 days. Mass production typically takes 20-30 days, depending on the complexity and volume of the order.
Yes, we provide full traceability including Certificates of Conformance, material analysis, and origin documents required for global customs and quality audits.
WEITAI is committed to resolving motion control challenges for machinery OEMs worldwide. Whether you need a standard replacement for a Helac Parker model or a completely custom-engineered solution, our team is ready to assist.
Contact our technical sales team for a custom quote within 24 hours.
Weitai Hydraulic
