FG Series Planetary Reducer (FG60/FG80/FG120/FG160): High-Precision Low-Backlash & Quiet-Servo Transmission Solution
I. Product Overview
Weigao FG Series Planetary Reducers, covering core models from FG60 to FG160, are high-precision servo-adaptive transmission devices tailored for high-end automation scenarios requiring ultra-low backlash, quiet operation, and high-speed response. As a premium precision product in Weigao's planetary transmission lineup, this series addresses the pain points of large backlashes, high operating noise, and poor high-speed stability of traditional reducers in precision servo control scenarios. Compliant with international high-precision planetary gear standards and certified by ISO 9001 quality management system and IP65 protection level, it integrates precision珩磨 NGW-type planetary gear structure, low-noise optimization design, and high-speed bearing configuration. The product features ultra-low back gap, quiet operation, high transmission efficiency, and excellent servo compatibility, capable of stably operating in temperature ranges from -25℃ to +80℃. It is widely applied in precision CNC machine tools, industrial robots, electronic manufacturing equipment, and high-speed positioning platforms, providing reliable high-precision power support for global high-end precision manufacturing fields.
II. Core Advantages
1. Precision Honed NGW Structure, Ultra-Low Backlash & High Accuracy
Adopting the precision honed NGW-type planetary gear transmission design, the reducer realizes high-precision power transmission through the meshing of ultra-precision sun gear, 3-4 planetary gears, and honed inner gear ring. The gears undergo multi-stage precision珩磨 and micro-modification, with tooth surface roughness ≤Ra 0.04μm and single-stage back gap controllable to ≤0.5 arcmin, ensuring ultra-high positioning accuracy and repeatability. Made of high-quality 20CrMnTi alloy steel, the gears are processed by carburizing and quenching to reach tooth surface hardness HRC 60-63, forming a wear-resistant structure with excellent fatigue strength. The integrated double-support planetary carrier enhances torsion stiffness to ≥10Nm/arcmin, enabling fast servo response without lag. Transmission efficiency reaches 97%-99% with a ratio range of 3:1 to 100:1, and rated input speed up to 18000rpm, fully meeting high-speed precision control requirements.
2. Full Model Coverage (FG60-FG160), Servo-High-Speed Oriented Design
The FG series covers four core models: FG60, FG80, FG120, and FG160, with rated power ranging from 0.3kW to 80kW and rated torque covering 80Nm to 15000Nm, forming a complete high-precision product matrix. The housing adopts high-strength nodular cast iron with optimized rib distribution, balancing structural rigidity and heat dissipation performance. The compact integrated design makes the volume 25% smaller than traditional precision reducers with the same backlash level, adapting to limited installation space of precision equipment. Modular interfaces support direct connection with mainstream servo motors (Siemens, Mitsubishi, Panasonic), with multiple input/output forms including servo flange input, solid shaft with flat key, hollow shaft with locking disk, and spline shaft output, enabling seamless matching with high-speed servo systems.
3. Low-Noise Optimization, Quiet & Stable Operation
The reducer integrates multiple low-noise optimization designs, including gear tooth profile micro-crowning, precision backlash adjustment, and damping material filling in the housing. The optimized gear meshing angle reduces friction and vibration during operation, with full-load operating noise ≤55dB at 1m distance, creating a quiet working environment for clean rooms and precision workshops. The housing surface is treated with anti-rust and anti-corrosion coating, and the IP65 protection level effectively prevents dust and water spray from entering, ensuring stable operation in electronic manufacturing and precision machining environments. Equipped with high-precision angular contact ball bearings with preload, the shaft system operates smoothly at high speeds with low friction, reducing noise and extending service life to over 28000 hours under normal working conditions.
4. High-Speed Lubrication System, Maintenance-Free & Durable
The reducer adopts high-speed special grease lubrication for all models, factory-filled with lifelong maintenance-free synthetic lubricating grease that adapts to high-speed operation. The grease has excellent high-temperature stability and wear resistance, forming a stable oil film on gear surfaces even at 18000rpm, effectively reducing wear. The housing is equipped with a hidden oil level observation window and sealed structure, avoiding lubricant leakage and ensuring clean operation of precision equipment. The fully enclosed design supports arbitrary installation angles, adapting to complex layout requirements of servo systems. The lubrication system requires no regular oil change, significantly reducing maintenance costs and downtime, and is compatible with high-speed operation scenarios for long periods.
III. Typical Application Fields
- Precision CNC Machine Tools: High-speed feed shafts, precision spindle auxiliary transmissions, ensuring ultra-high positioning accuracy (FG60-FG80 for small machines, FG120-FG160 for medium-duty machines)
- Industrial Robotics: Collaborative robot joints, small articulated robot arms, realizing quiet operation and precise positioning
- Electronic Manufacturing: Semiconductor packaging equipment, PCB precision processing machines, adapting to high-speed and low-noise requirements
- High-Speed Positioning Platforms: Automated guided positioning systems, laser cutting machine transmission mechanisms, ensuring fast response and stability
- Precision Instruments: Medical imaging equipment, laboratory automation devices, meeting ultra-low backlash and quiet operation needs
IV. Key Technical Parameters
| Model Specification | FG60, FG80, FG120, FG160 |
| Power Range | 0.3kW - 80kW |
| Transmission Ratio | 3:1 - 100:1 (stepless selection according to model), single-stage back gap ≤0.5 arcmin |
| Operating Noise | ≤55dB (1m distance, full load) |
| Operating Temperature | -25℃ - +80℃ |
| Mounting Type | Servo flange input, solid shaft/hollow shaft/spline shaft output, arbitrary installation angle |
V. Installation & Maintenance
Select models based on servo motor parameters, precision requirements, and speed demands. During installation, ensure the coaxiality error between the reducer and servo motor is ≤0.01mm to guarantee precision and stability. Use high-strength bolts with anti-loosening washers for fixation, avoiding additional stress. The reducer adopts lifelong maintenance-free grease, no regular oil change required; clean the housing surface regularly to ensure heat dissipation. Avoid collision and corrosion, and check the sealing performance periodically. Stop immediately for inspection if abnormal noise, vibration, or lubricant leakage occurs, and perform maintenance by professional precision equipment technicians.
Weigao FG Series Planetary Reducers (FG60-FG160) adhere to the design philosophy of "precision first, quiet operation, and servo adaptation", focusing on the core needs of high-end precision manufacturing and servo control scenarios. With advantages of ultra-low back gap, low noise, and high-speed stability, it breaks through the limitations of traditional reducers in precision high-speed applications. The product provides reliable transmission solutions for CNC machine tools, industrial robots, and precision instruments, supported by specialized high-precision models and professional after-sales services. Compliant with international high-precision transmission standards, it is committed to becoming a trusted partner in the global high-end precision servo transmission field.
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