ML-Series Helical Gear Reducer (ML2/ML3/ML4/ML5): Lightweight Precision Transmission, Empowering Efficient Modular Operation
I. Product Overview: Lightweight Torque-Graded Design, Meeting Efficient Precision Transmission Needs
Weigao’s ML-Series Helical Gear Reducer, covering core models ML2, ML3, ML4 and ML5, is a high-performance power transmission device specialized in lightweight modular industrial scenarios requiring both precision and compact layout. Based on a lightweight torque-graded modular design platform, this series integrates advanced lightweight material technology, optimized helical gear meshing technology and standardized component design, realizing an excellent balance of lightweight structure, precise torque control, efficient transmission and flexible installation. It effectively solves the pain points of traditional reducers such as heavy weight, poor compactness, unclear torque grading and difficult adaptation to lightweight equipment, and can maintain stable and reliable power output in working conditions involving lightweight modular equipment, high-frequency start-stop, precise speed control and limited installation space. With its lightweight advantages and torque-graded precision features, it has become a core transmission component in industries such as intelligent lightweight equipment, automated precision logistics, electronic manufacturing and small-scale light industrial processing, providing efficient and precise power support for industrial lightweight and modular upgrading. As a key lightweight transmission product of Weigao, this series has been exported to more than 80 countries and regions around the world, winning wide recognition from global customers with its lightweight performance and precise matching value.
II. Core Advantages: Six Core Strengths, Shaping Lightweight Precision Transmission Benchmarks
1. Lightweight Helical Transmission, High Efficiency & Ultra-Low Noise
Adopting precision-ground helical gears with optimized tooth profile, helix angle and lightweight structure design, the series achieves meshing accuracy up to GB/T 10095.2 Class 5-6 standard. The parallel-axis helical transmission structure ensures smooth meshing between gears, uniform force distribution and minimal transmission shock, reducing transmission backlash to ≤2.5arcmin. The transmission efficiency reaches 96%-98% for single-stage transmission and 94%-97% for multi-stage transmission, effectively reducing energy loss in long-term high-frequency operation. The lightweight enclosed cast aluminum alloy housing (key stress parts reinforced with cast iron) combines sound insulation and heat dissipation functions, minimizing operating noise with the noise level ≤70dB at 1m distance, creating an ultra-quiet and stable working environment for precision lightweight workshops.
2. Torque-Graded & Lightweight Dual Design, Precise Scene Adaptation
The four core models of the series adopt scientific torque grading combined with targeted lightweight design to meet differentiated precision lightweight transmission needs: ML2 models are micro-lightweight precision models, suitable for ultra-light-load precision equipment such as micro automated feeders, precision electronic component handlers and small sensors; ML3 models are small lightweight torque models, ideal for lightweight modular assembly line stations, small precision conveyors and electronic product testing equipment; ML4 models are medium lightweight torque models, matching medium-light-load equipment such as lightweight automatic packaging machines, precision logistics sorting systems and small textile winding machinery; ML5 models are medium-large lightweight torque models, adapting to heavy-light-load modular equipment such as large-scale lightweight conveying lines and multi-station precision processing machines. This dual design of torque grading and lightweight ensures precise matching of different load levels and lightweight equipment requirements, improving overall equipment operation efficiency and energy-saving effect.
3. High-Precision Torque Control, Stable Lightweight Operation
Gears are made of high-strength 20CrMnTi alloy steel with precision forging and grinding processes, and transmission shafts adopt lightweight alloy steel with high rigidity, processed through carburizing, quenching, tempering and precision grinding processes. The surface hardness of gears reaches HRC 60-64, and the core hardness is HRC 32-38, ensuring excellent wear resistance and torque transmission stability while achieving lightweight. The optimized gear modulus, tooth width and shaft diameter design for each torque grade ensures that the rated output torque of the series is precisely graded from 30N·m to 6000N·m (ML2: 30-150N·m; ML3: 150-600N·m; ML4: 600-2500N·m; ML5: 2500-6000N·m). The lightweight cast aluminum alloy housing with reinforced rib design at key positions has good rigidity and shock absorption capacity, effectively ensuring stable torque output even under variable load conditions, with a service life of more than 10 years under normal maintenance.
4. Compact Modular Installation, Flexible & Convenient Combination
The series adopts a fully compact modular design, supporting mainstream installation modes such as base-mounted, flange-mounted (B5/B14), small flange-mounted and shaft-mounted, which can be flexibly selected according to the limited layout space of lightweight equipment. The output shaft is configured with multiple lightweight and precise options such as solid shaft with flat key, spline solid shaft and hollow shaft with locking disk, and can be precisely matched with motors with power ranging from 0.12kW to 55kW and reduction ratios of 3-350 (single-stage/multi-stage combination). The standardized and miniaturized interface design enables quick combination between different ML-series models or with other lightweight transmission components, facilitating flexible configuration of lightweight modular production lines and greatly reducing equipment installation space and transformation costs.
5. Enhanced Sealing, Wide Lightweight Environment Adaptability
Equipped with a three-layer composite sealing system composed of high-precision corrosion-resistant double-lip oil seal, labyrinth seal and O-ring, the reducer achieves IP55 protection level (IP65 can be customized for harsh lightweight environments). This sealing structure can effectively prevent the intrusion of dust, water vapor, oil mist and corrosive gas in precision workshops and outdoor lightweight equipment, avoiding oil leakage and component pollution. The rational internal oil circuit design combined with the heat dissipation performance of the aluminum alloy housing ensures sufficient lubrication and heat dissipation of all transmission components during high-speed operation, and the product can work normally in the operating temperature range of -30℃ to +90℃, adapting to most lightweight industrial working conditions such as precision clean workshops, high-temperature lightweight processing workshops and outdoor lightweight logistics equipment.
6. Easy Maintenance, Cost-Effective Lightweight Operation
The modular and lightweight design makes component disassembly and maintenance more convenient, and the high interchangeability of spare parts between the same series reduces maintenance difficulty and time cost. The centralized and miniaturized oil filling port, oil drainage port and transparent oil level observation window facilitate daily lubrication management and real-time oil level monitoring. It is recommended to use 220#/320# precision low-viscosity industrial gear oil, which further improves transmission efficiency and energy-saving effect; the first oil change is after 1000 hours of operation, and regular maintenance and oil change are performed every 6000 hours thereafter. The high reliability, long service life, precise torque control and lightweight energy-saving advantages of the product effectively reduce the frequency of maintenance and replacement and energy consumption, significantly lowering the total operation cost of lightweight modular production lines.
III. Application Fields: Lightweight Modular Coverage, Boosting Industrial Lightweight Upgrade
With its lightweight structure, torque-graded precision, modular design and reliable performance, Weigao’s ML-Series Helical Gear Reducer (ML2/ML3/ML4/ML5 models) has been widely applied in various lightweight and intelligent industrial fields:
- Intelligent Lightweight Equipment: Lightweight automated assembly lines, small robotic arm supporting equipment, precision micro-processing stations, matching precise torque and lightweight operation needs;
- Precision Logistics: Automated precision sorting systems, small and medium-sized lightweight conveyors in clean workshops, adapting to light-medium load lightweight modular operation requirements;
- Electronic Manufacturing: Precision electronic component conveyors, PCB precision processing equipment, electronic product testing machines, adapting to ultra-light-load high-precision transmission requirements;
- Light Industrial Processing: Lightweight automatic packaging machines, small plastic film processing equipment, textile yarn winding machinery, matching medium-light-load continuous operation needs;
- Food & Pharmaceutical Processing: Automatic food precision sorting machines, small-scale pharmaceutical packaging lines, adapting to clean, low-noise and lightweight working environment requirements;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
| Item | Specification Range |
| Motor Power Adaptation | 0.12kW - 55kW |
| Reduction Ratio | 3 - 350 (Single-stage/Multi-stage Combination) |
| Rated Output Torque | 30N·m - 6000N·m (Torque-Graded) |
| Transmission Efficiency | 94% - 98% (Single-stage/Multi-stage) |
| Operating Noise | ≤70dB (Measured at 1m Distance) |
| Protection Level | IP55 (IP65 Customizable) |
| Operating Temperature | -30℃ - +90℃ |
| Installation Method | Base-mounted, Flange-mounted (B5/B14), Small Flange-mounted, Shaft-mounted |
| Output Shaft Type | Solid Shaft (Flat Key/Spline), Hollow Shaft (Locking Disk) |
V. Installation and Maintenance: Scientific Operation, Maximizing Performance
During installation, ensure that the coaxiality error between the reducer and the motor is ≤0.06mm to avoid affecting torque transmission precision and lightweight operation stability. For modular combination installation, pay attention to the alignment accuracy between adjacent reducers and transmission components, and ensure sufficient installation space for heat dissipation. Select the appropriate lubricating oil according to the working conditions: use 220# precision low-viscosity industrial gear oil for normal temperature and light-medium load, and 320# precision low-viscosity industrial gear oil for high temperature and medium-heavy load. Regularly check the oil level, oil quality and gear meshing status; replace the lubricating oil after the first 1000 hours of operation, and perform comprehensive maintenance every 6000 hours thereafter, including checking sealing performance, fastener tightness, bearing temperature and housing deformation. If abnormal phenomena such as excessive noise, torque fluctuation, oil leakage or overheating occur during operation, stop the machine immediately for inspection and troubleshooting.
VI. Conclusion: Lightweight & Precision-Driven, Creating Efficient Modular Transmission Value
Adhering to the design philosophy of "Lightweight, Precision, Modularity and Efficiency", Weigao’s ML-Series Helical Gear Reducer (ML2/ML3/ML4/ML5 models) focuses on the precise and efficient transmission needs of lightweight and modular industrial fields, and continuously optimizes product structure and production processes. Whether in ultra-light-load precision transmission, medium-light-load continuous operation or compact modular combination scenarios, this series can provide stable and efficient power transmission solutions for customers with its lightweight structure, torque-graded precision and modular compatibility advantages, helping to improve the lightweight level, intelligence level and production efficiency of modular production lines. We will continue to focus on the research and development of lightweight precision transmission technology, deeply explore the needs of different lightweight industrial fields, provide customized product solutions and global after-sales service support, and work with global customers to build a more efficient, energy-saving and intelligent industrial production system. All export products of this series have passed international certifications such as ROHS, CE and ISO9001, fully complying with the technical standards and safety requirements of various countries and regions, ensuring smooth application in global lightweight modular industrial markets.
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