RV Series Worm Gear Units (RV025/RV030/RV040/RV050/RV063/RV075): Precision Self-Locking & Quiet Efficient, Leading Precision Transmission in Intelligent Manufacturing
I. Product Overview: Graded Precision Configuration, Meeting Diversified Intelligent Manufacturing Needs
Weigao’s RV Series Worm Gear Units, covering core models RV025, RV030, RV040, RV050, RV063 and RV075, are high-precision power transmission devices specially developed for intelligent manufacturing scenarios requiring precision positioning, self-locking protection, low-noise operation and stable transmission. Targeting the pain points of traditional worm gear units such as poor positioning accuracy, weak self-locking performance, high noise and low transmission efficiency in precision equipment applications, this series integrates advanced precision worm gear meshing technology, optimized self-locking structure design, low-friction material modification and modular precision assembly technology. It realizes a perfect combination of graded precision output, reliable self-locking, ultra-quiet operation and efficient torque transmission, and can stably operate in complex working conditions involving variable load, frequent start-stop, precision positioning and clean environment. As a core transmission component for key equipment in intelligent manufacturing fields, the RV series is widely applied in industrial robots, CNC machine tools, precision conveying systems, automated assembly lines and other industries, providing high-precision and reliable power support for global intelligent manufacturing projects. The product has passed international certifications such as ISO 9001 quality management system certification, CE certification and IP65 protection certification, and is trusted by more than 50 countries and regions for its excellent precision transmission performance.
II. Core Advantages: Five Precision Transmission Strengths, Defining Intelligent Manufacturing Standards
1. Precision Worm Gear Meshing, High-Accuracy Positioning
Adopting precision-ground worm and worm gear with optimized tooth profile and high-precision meshing modification, the meshing accuracy reaches GB/T 10095.2 Class 5 standard. The worm is made of high-quality 20CrMnTi alloy steel, processed by multi-stage carburizing quenching, low-temperature tempering and precision grinding, with surface hardness up to HRC 60-62 and tooth surface roughness ≤Ra 0.4μm. The worm gear is made of tin bronze (ZCuSn10Pb1) with excellent wear resistance and friction reduction performance, processed by precision hobbing and grinding. The unique "multi-tooth simultaneous meshing" structure ensures uniform force distribution, reduces transmission backlash to ≤3arcmin (precision grade ≤1.5arcmin), and realizes high-precision positioning control. The transmission efficiency reaches 88%-95% (depending on the model and reduction ratio), which is 5%-8% higher than that of traditional worm gear units, effectively reducing energy consumption in long-term precision operation.
2. Reliable Self-Locking Performance, Safe Operation Guarantee
Based on the optimized worm helix angle design and high-friction coefficient material matching, the RV series realizes reliable self-locking performance when the worm is used as the driving end, with a self-locking safety factor ≥1.5. It can effectively prevent reverse rotation of the load and position drift in vertical lifting, precision positioning and other scenarios, avoiding equipment damage and workpieces scrapping caused by accidental reverse rotation. The self-locking performance is stable and reliable in the entire service life cycle, without additional braking devices, simplifying the equipment structure and reducing the overall cost. For special scenarios that do not require self-locking, customized non-self-locking models are also available to meet diversified transmission needs.
3. Ultra-Quiet Operation, Clean Environment Adaptation
The optimized worm gear meshing parameters, low-friction material matching and integral cast aluminum alloy housing with sound insulation design effectively reduce operating noise. The operating noise at 1m distance is ≤55dB (for small models RV025/RV030) and ≤60dB (for large models RV063/RV075), which is 10-15dB lower than that of traditional worm gear units. The fully enclosed sealing structure and low-noise lubricating oil (special synthetic worm gear oil) further suppress noise generation and transmission, making the series suitable for clean workshops, precision testing laboratories and other environments with strict noise requirements. The cast aluminum alloy housing also has the advantages of light weight and good heat dissipation, reducing the overall weight of the equipment by 30% compared with cast iron housing models.
4. Graded Torque Output, Diversified Model Matching
The six core models of the series adopt graded torque output design to meet the transmission needs of different precision equipment: small models RV025/RV030 have a rated output torque of 250-600N·m, suitable for small precision equipment such as small industrial robot joints and precision conveyors; medium models RV040/RV050 have a rated output torque of 600-2000N·m, suitable for medium-sized equipment such as CNC machine tool feed systems and automated assembly line actuators; large models RV063/RV075 have a rated output torque of 2000-5000N·m, suitable for large precision equipment such as heavy-duty robot bases and large-scale precision rotating platforms. All models support flexible matching with servo motors of 0.75-45kW, and the reduction ratio ranges from 10-100 (single-stage/multi-stage combination), realizing precise matching of different power and speed requirements.
5. Modular Precision Installation, Convenient Maintenance
Adopting modular precision design, the series supports multiple installation modes such as base-mounted, flange-mounted (B5/B14), torque arm-mounted and shaft-mounted, which can be flexibly adapted to the layout requirements of different precision equipment. The output shaft is available in solid shaft (flat key/spline) and hollow shaft (locking disk connection) types, with standardized interface design, which can be directly connected to the actuator of precision equipment, reducing installation errors and improving positioning accuracy. The centralized oil filling port, oil drainage port and transparent oil level observation window facilitate daily lubrication management and maintenance. The high interchangeability of spare parts between the same series reduces maintenance difficulty and time cost, ensuring the continuous and stable operation of precision equipment.
III. Typical Application Fields: Focus on Intelligent Manufacturing, Empowering Precision Equipment
With its exclusive precision positioning, reliable self-locking, ultra-quiet operation and graded torque output performance, Weigao RV Series Worm Gear Units have become the core transmission choice for precision equipment in intelligent manufacturing fields, and their typical application fields include:
- Industrial Robots: Small/medium-sized industrial robot joints, heavy-duty robot bases, collaborative robot actuators, adapting to high-precision positioning, frequent start-stop and low-noise operation environments;
- CNC Machine Tools: CNC lathe feed systems, machining center workbench rotating mechanisms, precision grinding machine transmission systems, adapting to high-precision positioning, stable load and clean workshop environments;
- Precision Conveying Systems: Pharmaceutical/electronic component precision conveyors, food packaging line conveying mechanisms, adapting to clean environment, low-noise operation and variable load environments;
- Automated Assembly Lines: Automobile parts automated assembly actuators, electronic product precision assembly mechanisms, adapting to high-frequency start-stop, precision positioning and stable operation environments;
- Precision Testing Equipment: Semiconductor wafer testing platforms, optical component testing equipment rotating mechanisms, adapting to ultra-high precision positioning, low-noise and clean laboratory environments;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
| Item | Specification Range |
| Motor Power Adaptation | 0.75kW - 45kW |
| Reduction Ratio | 10 - 100 (Single-stage/Multi-stage Combination) |
| Rated Output Torque | 250N·m - 5000N·m (Graded by Model) |
| Transmission Efficiency | 88% - 95% (Depending on Model and Reduction Ratio) |
| Operating Noise | ≤55dB - ≤60dB (Measured at 1m Distance) |
| Protection Level | IP65 (Customizable to IP67 for Special Environments) |
| Operating Temperature | -20℃ - +120℃ |
| Installation Method | Base-mounted, Flange-mounted (B5/B14), Torque Arm-mounted, Shaft-mounted |
| Output Shaft Type | Solid Shaft (Flat Key/Spline), Hollow Shaft (Locking Disk Connection) |
V. Installation and Maintenance: Scientific Operation, Maximizing Performance
During installation, ensure that the coaxiality error between the reducer and the motor is ≤0.1mm to ensure precision positioning and transmission stability. For precision equipment installation, adopt precision adjusting gaskets to fine-tune the installation position and avoid installation errors affecting positioning accuracy. Select the appropriate lubricating oil according to the working conditions: use 220# special synthetic worm gear oil for normal temperature and general load, and 320# high-temperature resistant synthetic worm gear oil for high temperature and heavy load. Regularly check the oil level, oil quality, worm gear meshing status and fastener tightness; replace the lubricating oil after the first 2000 hours of operation, and perform comprehensive maintenance every 6000 hours thereafter, including checking bearing temperature, gear wear, sealing performance and housing deformation. If abnormal phenomena such as excessive noise, obvious vibration, oil leakage, overheating or positioning deviation occur during operation, stop the machine immediately for inspection and troubleshooting.
VI. Conclusion: Precision Transmission Leader, Empowering Intelligent Manufacturing Upgrade
Adhering to the design philosophy of "Precision Positioning, Reliable Self-Locking, Quiet Efficiency and Modular Adaptation", Weigao RV Series Worm Gear Units (RV025/RV030/RV040/RV050/RV063/RV075) focus on the core transmission needs of intelligent manufacturing precision equipment, integrating multiple exclusive technologies such as precision worm gear meshing, optimized self-locking structure and ultra-quiet design. It breaks through the performance limitations of traditional worm gear units in precision transmission scenarios, providing stable, reliable and high-precision power transmission solutions for industrial robots, CNC machine tools, precision testing equipment and other key industries. We will continue to rely on advanced precision transmission technology, deeply explore the personalized needs of different intelligent manufacturing scenarios, provide customized product solutions and global after-sales service support, and work with customers to promote the upgrade of intelligent manufacturing technology. All models of the RV series have passed strict international certifications, fully complying with the technical standards and safety requirements of global precision equipment industries, and are committed to becoming a trusted partner in the global intelligent manufacturing precision transmission field.
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