Engineered for heavy-duty rotation, extreme loads, and reliable long-cycle performance across industrial sectors.
In the arena of mobile machinery and structural hydraulics, the L20-15-M-Ft-180-S1-C-H rotary actuator represents a peak in helical gear-driven engineering. This specific model code comprises designated structural identifiers that inform mechanical designers of its mounting capabilities, fluid routing, maximum working limits, and safety measures. By analyzing this code, hydraulic integrators can map exact kinematic parameters to heavy industrial operations.
| Code Element | Engineering Designation | Operational Capability & Value |
|---|---|---|
| L20 | Series Classification | High-tensile sliding helical spine architecture with enhanced radial dynamic load distribution. |
| 15 | Torque-Capacity Indicator | Approx. 15,000 in-lbs (1,695 Nm) of output torque at standard operating parameters. |
| M | Metric Porting Integration | In conformance with ISO standards, utilizing DIN metric threads for fluid seals. |
| Ft | Foot Mount Footprint | Features reinforced mounting feet designed to absorb severe shear and moment forces. |
| 180 | Degrees of Rotation | 180° complete angular motion with integrated buffer cushioning at the stroke limits. |
| S1 | Output Shaft Configuration | Standard single-extension shaft design utilizing a heavy duty keyway system. |
| C | Counterbalance Block | Integrated counter-balance control block to ensure drift-free position holding. |
| H | High-Pressure Configuration | High-performance seals rated for continuous severe pressure peaks up to 350 bar. |
Helical sliding spline systems rely on linear piston movement transformed into rotational output. When hydraulic oil enters the actuator port, it drives the internal piston linearly. Simultaneously, the helical teeth on the inner diameter of the outer ring and the outer diameter of the shaft force the piston to rotate as it moves. The result is a compact, high-torque package with high load-bearing capacity that simplifies structural assemblies.
Across the worldwide industrial supply chain, standard cylinders are increasingly being substituted by helical hydraulic rotary actuators. In regions such as Western Europe, North America, and East Asia, machinery designers are under constant pressure to minimize machine envelope sizes while boosting load capacity. This design challenge is met by helical sliding spline systems, which achieve power-to-volume ratios that planetary or rack-and-pinion designs cannot replicate.
From a macro commercial standpoint, the demand for high-end actuators like the L20-15 series is driven by:
Heavy infrastructure machines must deliver maximum rotational force within narrow structures, such as within the arm assemblies of mining excavators.
Regulatory mandates require mechanical locks and integrated counter-balance valves to protect operators against structural failures and unexpected pressure losses.
Enclosed, self-lubricating helical designs protect vital components from mud, water, salt spray, and abrasive particles, ensuring long service life.
WEITAI Hydraulic is one of the leading mobile hydraulic suppliers in China with decades of experience. We are committed to providing excellent hydraulic products and services to both businesses and final users worldwide. Starting from the production of OEM Hydraulic cylinders for North American Customers, we have grown to be an integrated company of manufacturing, trading, and investing. The hydraulic rotary actuator is one of our main products. Our factory is ISO certified and our material suppliers have all obtained CE, RoHS, CSA and UL certificates. We can design and customize according to drawings to meet the diverse needs of customers.
WEITAI has a professional team to support customers all over the world. Our team concentrates on mobile hydraulic components. Together with our professional technicians and staff, we are dedicated and passionate about our mission.
Decades of industrial manufacturing and international export excellence.
The structural characteristics of the L20-15-M-Ft-180-S1-C-H rotary actuator allow it to function effectively in challenging environments. Unlike standard linear cylinders that need external linkages, our helical design distributes load paths evenly throughout the housing, making it suitable for applications with space constraints and high dynamic load demands:
Enables heavy grading buckets to tilt up to 180° on excavators and backhoes. The foot-mount (Ft) configuration bolts directly onto quick-couplers, resisting heavy shock forces when digging in rock or compacted soil.
Critical for elevating work platforms (AWP). The integrated counterbalance valve (C) acts as a safety fuse, preventing basket rotation in the event of hose ruptures or sudden system pressure drops.
Utilizes the high-pressure configuration (H) with specialized polyurethane dynamic seals to withstand salt-spray and moisture. The single keyed shaft (S1) connects directly to marine rudders for responsive steering control.
Professional technical and commercial teams are available 24/7 for online support.
High torque, high bearing capacity designed for heavy duty operations.
Enclosed moving parts, suitable for harsh environments (dust, salt, mud).
High power density fits in tight spaces where standard cylinders fail.
Zero internal leakages, smooth operation, no external brakes required.
Eliminates bearings, linkages & brackets, reducing bill of materials.
In Overload Conditions - Hydraulic fuse prevents mechanical damage.
High Torque & Multidirectional Hydraulic Slewing Motors
WEITAI factories are ISO certified, and our material suppliers have obtained CE, RoHS, CSA, and UL certificates. We design and customize according to drawings to meet the diverse needs of customers. Follow our camera lens to see how a helical hydraulic rotary actuator is manufactured!
As industrial automation and heavy electrification progress, the technology of fluid power actuators is undergoing a transition. Design models like the L20-15 are evolving to meet these changing demands:
Integrating compact electric motors and micro-pumps directly into the actuator housing. This design minimizes hydraulic lines and the risk of system leaks, creating a self-contained steering and tilting system.
Integrating digital angle-encoders and internal pressure-transducers directly into the counterbalance manifold. This enables predictive maintenance monitoring and provides telemetry data to control networks.
Using advanced surface treatments like Diamond-Like Carbon (DLC) and QPQ on internal splines. This reduces friction loss, increases wear resistance under dry start-up conditions, and extends service lifetimes.
Furthermore, modern environmental regulations are driving a shift toward bio-degradable hydraulic fluids. WEITAI's engineering team works to ensure seal compatibility across a range of environmentally friendly synthetic esters and vegetable-based fluids. This support helps heavy machinery meet regional environmental compliance standards.
Full portfolio of helical rotary solutions from 500 Nm to 24000 Nm torque capacities.
Comprehensive technical, commercial, and shipping support answers from our engineering team.
Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contacts us for further information.
Yes, we require all international orders to have an ongoing minimum order quantity. If you are looking to resell but in much smaller quantities, we recommend you check out our website.
Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required.
For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving the deposit payment. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sales representative. In most cases, we are able to accommodate your needs.
You can make the payment to our bank account, Western Union, or PayPal: 30% deposit in advance, 70% balance against the copy of B/L.
We warranty our materials and workmanship. Our commitment is to your satisfaction with our products. In warranty or not, it is the culture of our company to address and resolve all customer issues to everyone’s satisfaction.
Yes, we always use high quality export packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Specialist packaging and non-standard packing requirements may incur an additional charge.
The shipping cost depends on the way you choose to get the goods. Express is normally the quickest but also the most expensive way. Sea freight is the best solution for large amounts. Exact freight rates can only be provided once we know the details of order quantity, weight, and delivery method. Please contact us for further information.
Helical sliding splines distribute torque forces across multiple teeth simultaneously. This design offers a larger contact surface area than rack-and-pinion actuators, providing higher shock resistance and torque density within a compact, fully sealed cylindrical body.
The integrated counterbalance valve prevents the actuator from moving unexpectedly due to gravity or external forces, especially if a hydraulic line fails. By mounting the valve block directly to the cylinder port, it minimizes the risk of line routing failures, keeping the actuator locked in position under load.
Please let us know your demands, and our professional engineering team will be in touch within 24 hours.
Weitai Hydraulic
