High-Density Precision Hydrostatic Drive Solutions for Rigorous Operational Terrains
The PHV (Precision Hydrostatic Vessel / Nachi alternative type) series of final drives represents a milestone in high-torque, dual-displacement travel motor technology. These compact radial and axial piston hydrostatic drives are designed specifically to operate within the confined spaces of crawler undercarriages, skid steer loaders, and heavy excavators. Featuring integrated planetary gearboxes, dynamic wet friction brake assemblies, and auto-shifting high/low-displacement capabilities, PHV units deliver the reliable tractive effort needed to navigate treacherous construction sites and heavy industrial operations.
By embedding the hydraulic motor and reduction gear into a single housing, PHV architectures limit mechanical volumetric losses, reduce leak points, and optimize thermal dispersion. This results in exceptional hydraulic transmission efficiency (often exceeding 92% volumetric capacity under full load), which guarantees seamless translation of hydraulic pressure into mechanical torque.
China’s Premier Secretary-Level Hydraulic Exporter & High-End Assembly Manufacturer
Weitai Hydraulic is one of China’s leading hydraulic suppliers and stands among the earliest hydraulic enterprises specializing in export business for decades. We are committed to providing excellent hydraulic products and services to both businesses and final users worldwide. At our inception, we functioned purely as an OEM factory. Over decades of intensive design evolution, we have gradually developed into a comprehensive company integrating production, trade, and investment.
Hydraulic motors are one of our main products. In addition to our own hydraulic factories, we are a shareholder of a high-quality hydraulic motor manufacturer. Our factories are all ISO certified, and our material suppliers have obtained CE, RoHS, CSA, and UL certificates. This allows our engineering division to customize designs according to unique customer drawings, matching exact spatial configurations and flow metrics required by global heavy machinery brands.
Our expansive travel motor, swing motor, and wheel motor portfolios feature advanced design structures that provide high volume efficiency, high strength, and good stability far superior to our competitors' motors. This resulted in the demand and production of over 40,000 Weitai travel motors in 2019 alone. Weitai travel motors are now included in the production lines of excavator manufacturers such as SANY, XCMG, and SDLG. As the Shandong Hydraulic Association’s (SDHA) Secretary Company and the comprehensive export platform of the provincial hydraulic organization, Weitai is proud to represent China and share high-quality hydraulic products with the world. Weitai Hydraulic was elected as the 2018 Annual Outstanding Enterprise at the Shandong Equipment Manufacturing Association’s Intelligent Manufacturing Forum.
Analyzing Custom Engineering, Metallurgical Superiority, and Global Interoperability
We provide comprehensive blueprint reviews and customize key shaft sizes, spline configurations, port positioning, and displacement curves to replace original units perfectly.
By employing high-carbon alloy steels subjected to precision vacuum nitriding and induction hardening processes, we prevent component stress cracking under extreme hydrostatic pressures.
Our integrated pilot valves sense change in draw bar pull, modulating the motor displacement smoothly between fast transit speeds and max-torque climbing capabilities.
Our state-of-the-art testing facility is equipped with automated dynamometers to test and log every final drive assembly's performance curves. This ensures that every travel motor meets high efficiency standards under extreme simulation.
Addressing the Complex Requirements of Global Heavy Industries and Local Jurisdictions
Operating industrial machinery across North America, Europe, Australia, and East Asia requires adherence to stringent regulatory systems and site environments. Weitai Hydraulic PHV final drives are designed with these global specifications in mind. Through material verification, we guarantee compliance with CE standards for EU machinery directives, RoHS for hazard reduction, and UL/CSA alignments for electrical integration modules (particularly relevant for our newly designed WED electric series).
Agricultural & Forestry Track Systems: Excavator operators running track systems in marshy terrain rely on our triple-lip oil seals to prevent soil, mud, and water ingress. High load-bearing tapered roller bearings prevent axial displacement even under severe sideloading conditions.
Skid Steer & Compact Track Loaders (CTL): Standard aftermarket conversions for platforms like Bobcat (T590, T300, T650) require drop-in hydraulic travel motor compatibility. Weitai replacement designs match original spline, structural envelope, and pilot control specs, minimizing machine downtime during replacement.
Computer-aided modeling ensures exact replacement specifications and load simulations.
Using Japanese and German CNC centers to achieve tight component tolerances.
Each unit undergoes strict diagnostic pressure and efficiency evaluations.
Rust-inhibiting packaging preserves products during long sea transit.
Navigating the Future of Electro-Hydraulic Powertrains and Eco-Friendly Hydraulics
The global machinery market is undergoing a major paradigm shift. Key regulatory frameworks regarding carbon limits and noise reductions in urban zones are prompting engineering departments to redesign conventional powertrains. Weitai Hydraulic is positioning itself ahead of these trends by developing hybrid hydraulic-electric solutions. Our new 200Nm Electric Wheel Drive (WED-002) combines an Integrated Permanent Magnet (IPM) 3KW Motor and matching Planetary Gearbox into a single compact casing, setting a new benchmark for clean, electric-drive undercarriages.
Additionally, our R&D efforts are focused on improving the power density of travel motor designs. By employing new internal spline geometric profiles and high-load piston configurations, our newer motors run at pressures up to 350-400 bar, providing higher torque output without increasing the physical size of the motor.
Replacement motor for radial piston drive configurations, utilizing a compact shaft drive format.
Direct drop-in replacement built to exceed OEM 307-3045 engineering limits with 2-speed controls.
Heavy-duty high-speed design matching exact replacement specifications for compact loaders.
Radial piston technology built to withstand severe heavy-duty tracking demands.
Addressing Engineering, Customization, Sourcing logistics, and Warranty Verification
No. 36 Miao Ling Road, Laoshan District, Qingdao, China 266061
Monday-Friday: 9:00 am to 6:00 pm
Saturday, Sunday: Closed
Weitai maintains a robust supply of semi-finished components and cast housings to ensure short delivery windows for urgent orders.
WTM-09 Hydraulic Motor
Unpainted Motors
Painting Workshop
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Weitai Hydraulic
