PLX Series Planetary Reducer: Topology-Optimized & Spline-Coupled Precision Solution
I. Product Overview
Weigao PLX Series Planetary Reducers, covering models PLX60, PLX90, PLX120, PLX142, PLX180, and PLX220, are high-precision heavy-duty transmission devices integrating topology-optimized planetary架 and precision involute spline connection technology. Tailored for scenarios demanding high rigidity, precise torque transmission, and low maintenance such as servo heavy-duty modules, new energy equipment, and precision hoisting machinery, this series overcomes the shortcomings of traditional reducers such as insufficient structural rigidity, unstable connection, and frequent lubrication maintenance in high-precision heavy-load fields. Compliant with ISO 6336 gear standards and AGMA 6123 certification, with IP65 protection grade, it features integral forged gear sets, topology-optimized aluminum alloy/cast iron housing, and lifelong lubrication system. Boasting advantages of topology-optimized rigidity, spline precise coupling, maintenance-free operation, and wide torque coverage, it operates stably at -30℃ to +95℃, serving as a core component for high-end heavy-precision industrial equipment worldwide.
II. Core Advantages
1. Topology-Optimized Structure, High Rigidity & Lightweight
Adopting advanced topology optimization design on the planetary carrier and housing, the PLX series achieves the balance of high rigidity and lightweight. The planetary carrier is crafted from 20CrMnTi alloy steel via integral forging and topology optimization, reducing weight by 15% while enhancing torsional rigidity by 25% compared with traditional structures. Gears adopt precision involute tooth profile, made of 40Cr alloy steel undergoing deep carburizing, quenching, and precision grinding to ISO 5-level accuracy (GB/T 1095.1-2008 equivalent), with tooth surface hardness up to HRC 60-63 and roughness ≤Ra 0.03μm. Detailed precision parameters: sun/planet gear tooth profile tolerance (f) ≤0.008mm, tooth direction tolerance (f) ≤0.006mm, cumulative pitch error (F) ≤0.020mm. Equipped with pre-tightened angular contact ball bearings, backlash is controlled within ≤3arcmin (precision grade optional ≤1.5arcmin). Single-stage transmission efficiency hits 97%-99%, speed ratio 3:1-100:1 (multi-stage extendable to 3000:1), torque density reaches 18Nm/cm³, perfectly matching high-precision heavy-load transmission demands.
2. Involute Spline Connection, Precise Torque Transmission
The series adopts precision involute spline connection at the input/output ends, replacing traditional flat key connection to ensure uniform torque distribution and high coaxiality. PLX60-PLX220 form a complete product matrix: PLX60-PLX120 (topology-optimized aluminum alloy housing) cover 0.75kW-45kW power and 500Nm-5000Nm torque for light-medium precision heavy load; PLX142-PLX220 (cast iron housing with topology-optimized ribs) cover 55kW-160kW power and 6000Nm-35000Nm torque for super heavy-precision scenarios. The spline connection adopts DIN 5480 standard, with tooth flank contact rate ≥90% and radial runout ≤0.01mm, effectively avoiding keyway wear and torque fluctuation. Housing wall thickness optimized via finite element simulation (0.022a + 1.2mm, a为中心距) enhances integral rigidity, resisting deformation under 1.8 times rated load and ensuring stable operation of precision components.
3. Enhanced Sealing Protection, Harsh Environment Adaptation
Integrated precision protection and wide-temperature adaptation design ensure reliable operation in high-end industrial environments. Input/output ends adopt double-lip fluorine rubber oil seals combined with labyrinth sealing, achieving IP65 protection to prevent dust, light oil, and coolant intrusion. Small models (PLX60-PLX120) adopt hard anodized anti-corrosion treatment, large models (PLX142-PLX220) electrophoretic treatment (C3 grade), adapting to precision workshops and general industrial environments. Cooling fins arranged by heat flow density ≥0.16W/cm² enhance heat dissipation efficiency by 22%, and low-temperature resistant lubrication matching enables stable operation at -30℃ to +95℃. Operating noise ≤55dB at 1m, with gear meshing sound uniform and stable, no interference to precision equipment, service life extended to over 45000 hours under normal conditions.
4. Lifelong Lubrication System, Maintenance-Free Operation
The lubrication system adopts fully synthetic PAO-based gear oil with lifelong lubrication design, featuring excellent anti-wear, anti-oxidation, and high-temperature stability (operating temperature range -40℃ to +120℃). The sealed oil bath lubrication with optimized oil circuit ensures uniform oil supply to meshing parts and spline connections, forming a stable oil film to reduce wear. The housing is equipped with a high-precision oil quality sensor and pressure relief valve, facilitating real-time monitoring of lubrication status without regular oil change. For general working conditions, it realizes maintenance-free operation within the whole service life; for high-frequency heavy-load scenarios, the recommended oil change cycle is extended to 20000 hours. Modular design allows quick disassembly of gear sets and bearings, with standardized precision accessories ensuring consistent performance after overhaul.
III. Typical Application Fields
- New Energy Equipment: Lithium battery module assembly lines, new energy vehicle test platforms, spline connection ensuring precise torque transmission (PLX60-PLX120 for light load, PLX142-PLX220 for heavy load)
- Precision Hoisting: Intelligent hoisting equipment, heavy-duty robotic arms, topology-optimized structure balancing rigidity and lightweight
- Servo Heavy-Duty Modules: High-precision linear modules, servo-driven heavy-load conveyors, low backlash and stable connection matching servo system
- Metallurgy Precision Equipment: High-precision roller tables, smelting auxiliary precision machinery, high-temperature resistance and corrosion protection adapting to working conditions
- Electronic Manufacturing: Semiconductor equipment heavy-load modules, precision component handling lines, low noise and maintenance-free meeting workshop requirements
IV. Key Technical Parameters
| Model | Spline Specification (DIN 5480) | Rated Torque | Backlash | Housing Material |
|---|
| PLX60 | 16×32×6h | 500Nm-1200Nm | ≤3arcmin (Optional ≤1.5arcmin) | Topology-Optimized Aluminum Alloy |
| PLX90 | 20×40×6h | 1300Nm-2800Nm | ≤3arcmin (Optional ≤1.5arcmin) | Topology-Optimized Aluminum Alloy |
| PLX120 | 25×50×6h | 2900Nm-5000Nm | ≤3arcmin (Optional ≤1.5arcmin) | Topology-Optimized Aluminum Alloy |
| PLX142 | 32×60×6h | 6000Nm-15000Nm | ≤4arcmin (Optional ≤2arcmin) | Topology-Optimized Cast Iron |
| PLX180 | 40×80×6h | 16000Nm-25000Nm | ≤4arcmin (Optional ≤2arcmin) | Topology-Optimized Cast Iron |
| PLX220 | 50×100×6h | 26000Nm-35000Nm | ≤4arcmin (Optional ≤2arcmin) | Topology-Optimized Cast Iron |
V. Installation & Maintenance
Select models based on rated torque, spline specification, transmission ratio, and backlash requirements (refer to the specification table). Ensure coaxiality error ≤0.015mm during installation, fasten flange bolts with specified torque (40-70N·m for PLX60-PLX120, 90-140N·m for PLX142-PLX220) in diagonal sequence, and install anti-vibration gaskets for precision equipment. Use fully synthetic PAO-based gear oil for maintenance, replace every 20000 hours for high-frequency scenarios. Regularly inspect sealing performance, spline meshing status, and oil quality via the sensor, calibrate backlash every 12 months. Avoid overload operation exceeding 1.8 times rated torque, and entrust maintenance to professional precision equipment technicians.
Weigao PLX Series adheres to the philosophy of "precision optimization, rigid stability, and maintenance-free durability". Its topology-optimized structure and involute spline connection break through traditional reducers' performance limitations, ensuring reliable operation in high-precision heavy-load scenarios. Backed by strict quality control and professional after-sales service, it provides high-performance solutions for new energy, precision machinery, and electronic manufacturing, establishing itself as a trusted global partner in high-end planetary transmission.
Download
