ZPLX Series Planetary Reducer: Precision Ground Hard Tooth Surface & Shrink Disk Coupling Solution
I. Product Overview
Weigao ZPLX Series Planetary Reducers, spanning models ZPLX60 to ZPLX220, are high-performance heavy-duty transmissions integrating precision ground hard tooth surface planetary gear trains and shrink disk shaft coupling technology. Tailored for continuous heavy-load scenarios demanding reliable connection, compact layout, and long service life, this series overcomes the shortcomings of traditional reducers such as loose shaft connection, insufficient rigidity, and poor adaptability to variable working conditions in metallurgy, mining, and logistics fields. Compliant with ISO 6336 gear standards and ISO 9001 certification, with IP66 protection grade, it features integral forged gear sets, high-rigidity cast iron housing, and optimized force-bearing structure. Boasting advantages of shrink disk secure coupling, ultra-high gear precision, strong impact resistance, and wide power coverage, it operates stably at -25℃ to +100℃, serving as a core transmission component for belt conveyors, metallurgy roller tables, and mining machinery worldwide.
II. Core Advantages
1. Hard Tooth Surface Planetary Structure, High Torque Density
Adopting precision ground hard tooth surface planetary structure, the ZPLX series achieves superior transmission performance through multi-point meshing of integral forged sun gears, planetary gears, and inner gear rings. Gears are crafted from 20CrMnTi alloy steel, undergoing deep carburizing, quenching, and precision grinding to ISO 6-level accuracy, with tooth surface hardness up to HRC 60-63 and roughness ≤Ra 0.04μm. Spiral tooth profile modification and crowning technology eliminate edge contact, increasing meshing area by 20% and reducing noise while enhancing fatigue resistance. Equipped with full-needle roller bearings on the planetary carrier, torque density reaches 18Nm/cm³—30% higher than conventional planetary reducers. Single-stage efficiency hits 96%-98%, with transmission ratios from 3:1 to 100:1 (multi-stage extendable to 5000:1), fully satisfying large speed ratio heavy-load demands.
2. Shaft-Mounted Direct-Drive Design, Compact Installation
The series features shaft-mounted hollow shaft design with shrink disk coupling, enabling direct nesting on the working machine spindle without additional bases, reducing radial space by 40% versus flange-mounted models. The shrink disk delivers uniform radial clamping force, ensuring zero relative sliding even under 2.5 times rated torque impact, far superior to keyway connections. The ZPLX60-ZPLX220 matrix covers 1.1kW-160kW power and 500Nm-35000Nm torque, adapting to light-to-super heavy-load scenarios. Integral cast iron housing with reinforced ribs, optimized via finite element simulation, disperses load pressure to avoid deformation. A 360° rotatable torque arm supports horizontal, inclined, and vertical installation, fitting complex spatial layouts of industrial equipment.
3. Enhanced Sealing Protection, Harsh Environment Adaptation
Integrated multi-layer protection design ensures stable operation in harsh industrial environments. Input/output ends adopt fluorine rubber double-lip oil seals combined with labyrinth structures, achieving IP66 protection to prevent lubricant leakage and impurity intrusion. Housing undergoes electrophoretic anti-corrosion treatment (C4 grade), resisting coastal and metallurgical corrosive media. Integrated cooling fins boost heat dissipation efficiency by 25%, avoiding overheating during 24/7 operation. High-precision angular contact ball bearings reduce radial runout to ≤0.02mm, ensuring smooth operation with noise ≤58dB at 1m. The robust structure extends service life to over 30000 hours under continuous heavy-load conditions.
4. Extreme Pressure Lubrication, Low Maintenance Cost
The lubrication system adopts ISO VG 220 extreme pressure industrial gear oil, featuring excellent anti-wear, anti-oxidation, and high-temperature stability. Oil bath lubrication with forced circulation ensures uniform oil supply to all meshing parts, forming a stable oil film under impact loads. The housing is equipped with a visual oil level window, filter-equipped oil drain port, and pressure relief valve for easy maintenance. The recommended oil change cycle is 12000 hours under continuous operation, minimizing downtime. Modular core components (gears, bearings) enable quick disassembly and replacement, with standardized accessories reducing maintenance costs and improving overhaul efficiency.
III. Typical Application Fields
- Conveyor Systems: Mine belt conveyors and logistics scraper conveyors, shrink disk coupling ensuring stable operation (ZPLX60-ZPLX120 for light-medium load, ZPLX142-ZPLX220 for heavy load)
- Metallurgy Equipment: Steel mill roller tables and billet conveyors, precision gears adapting to continuous high-temperature heavy-load operation
- Mining Machinery: Ore crusher auxiliary transmissions and mine conveying lines, strong impact resistance withstanding harsh dusty environments
- Heavy-Duty Production: Auto part stamping lines and large mixing equipment, wide speed ratio matching multi-speed operation needs
- Port Machinery: Container conveyor and gantry crane auxiliaries, IP66 protection adapting to outdoor humid and corrosive conditions
IV. Key Technical Parameters
| Model Specification | ZPLX60, ZPLX90, ZPLX120, ZPLX142, ZPLX180, ZPLX220 |
| Power Range | 1.1kW - 160kW (Supporting multi-unit combination for super heavy-load scenarios) |
| Transmission Ratio | 3:1 - 5000:1 (single/multi-stage optional), Rated Torque: 500Nm - 35000Nm, Transmission Efficiency: 96%-98% |
| Operating Noise | ≤58dB (1m distance, full load) |
| Operating Temperature | -25℃ - +100℃ |
| Mounting Type | Shaft-mounted hollow shaft design, shrink disk connection, cast iron housing, IP66 protection & extreme pressure lubrication |
V. Installation & Maintenance
Select models based on rated torque, transmission ratio, and spindle diameter. Ensure hollow shaft-spindle fit gap ≤0.03mm during installation, fasten the shrink disk with specified torque, and adjust the torque arm to balance reaction force. Use ISO VG 220 extreme pressure gear oil, replace every 12000 hours, and clean the oil filter during replacement. Regularly inspect sealing performance, gear meshing status, and torque arm tightness. Stop operation immediately for inspection if abnormal noise or oil leakage occurs, and entrust maintenance to professional technicians.
Weigao ZPLX Series adheres to the philosophy of "precision coupling, heavy-load durability, and all-condition adaptation". Its precision ground hard tooth surface and shrink disk coupling break through traditional transmission limitations, ensuring reliable operation in harsh heavy-industry scenarios. Backed by strict quality control and professional after-sales service, it provides high-performance solutions for metallurgy, mining, and logistics, establishing itself as a trusted global partner in heavy-duty transmission.
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