RV Series Worm Gear Units (RV090/RV110/RV130/RV150): Heavy-Duty Precision Indexing & High Rigidity, Leading Large-Scale Smart Equipment Transmission
I. Product Overview: Large-Scale Graded Configuration, Meeting Heavy-Duty Precision Transmission Needs
Weigao’s RV Series Worm Gear Units, covering large-scale core models RV090, RV110, RV130 and RV150, are high-performance power transmission devices specially developed for large-scale intelligent manufacturing scenarios requiring heavy-duty bearing, precision indexing, anti-impact load and long-term continuous operation. Targeting the pain points of traditional large-scale worm gear units such as insufficient rigidity, poor indexing accuracy under heavy load, easy deformation and short service life in large-scale equipment applications, this series integrates advanced heavy-duty worm gear meshing technology, reinforced high-rigidity structural design, precision indexing optimization and long-acting lubrication technology. It realizes a perfect combination of graded heavy-duty output, high-precision indexing, strong anti-impact and stable transmission, and can stably operate in complex working conditions involving heavy axial/radial load, intermittent impact, precision indexing and harsh workshop environment. As a core transmission component for key equipment in large-scale intelligent manufacturing fields, the large-scale RV series is widely applied in large CNC machine tool rotating workbenches, heavy-duty industrial robot bases, large-scale automated production lines and other industries, providing high-reliability power support for global large-scale smart 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 heavy-duty precision transmission performance.
II. Core Advantages: Five Heavy-Duty Precision Strengths, Defining Large-Scale Equipment Standards
1. Reinforced Worm Gear Meshing, Heavy-Duty Precision Indexing
Adopting large-module precision-ground worm and worm gear with optimized tooth profile and heavy-duty meshing modification, the meshing accuracy reaches GB/T 10095.2 Class 5 standard. The worm is made of high-quality SCM440 alloy steel, processed by multi-stage carburizing quenching, low-temperature tempering and precision grinding, with surface hardness up to HRC 62-64 and tooth surface roughness ≤Ra 0.4μm. The worm gear is made of high-strength tin bronze (ZCuSn10Pb1) with reinforced tooth thickness, processed by precision hobbing and grinding. The unique "multi-tooth simultaneous meshing" structure with enlarged contact area ensures uniform force distribution under heavy load, reduces transmission backlash to ≤2arcmin (precision grade ≤1arcmin), and realizes high-precision indexing control. The transmission efficiency reaches 85%-93% (depending on the model and reduction ratio), which is 3%-5% higher than that of traditional large-scale worm gear units, effectively reducing energy consumption in long-term heavy-duty operation.
2. High-Rigidity Reinforced Structure, Strong Anti-Impact Capacity
The housing adopts high-strength cast iron (HT300) with topology optimization design, and the wall thickness is thickened by 30% compared with standard models. The dense reinforced rib structure inside the housing significantly improves the overall rigidity, with torsional rigidity ≥5000Nm/arcmin, which can effectively resist the radial impact force generated during large-scale equipment processing. The worm gear shaft adopts integral forging forming technology, with enlarged diameter and reinforced keyway design, which can bear large axial and radial loads. The output end is equipped with double-row tapered roller bearings + deep groove ball bearings combined support, with axial bearing capacity up to 50-200kN and radial bearing capacity up to 20-100kN, ensuring no deformation under 1.8 times rated torque impact load. This reinforced structure design provides a solid foundation for stable operation of large-scale equipment under heavy load and impact conditions.
3. Graded Heavy-Duty Output, Diversified Large-Scale Matching
The four core large-scale models of the series adopt graded heavy-duty torque output design to meet the transmission needs of different large-scale precision equipment: small large-scale models RV090/RV110 have a rated output torque of 5000-12000N·m, suitable for medium and large CNC machine tool feed systems and heavy-duty conveyor main drives; large large-scale models RV130/RV150 have a rated output torque of 12000-25000N·m, suitable for large CNC machining center rotating workbenches, heavy-duty robot bases and large-scale precision rotating platforms. All models support flexible matching with high-power servo motors of 11-75kW, and the reduction ratio ranges from 10-120 (single-stage/multi-stage combination), realizing precise matching of different power and speed requirements for large-scale equipment.
4. Long-Acting Lubrication & Sealing, Harsh Environment Adaptation
Equipped with an intelligent circulating lubrication system, including a high-precision oil filter, forced oil supply pump and oil temperature control device, it ensures sufficient lubrication of all transmission components under long-term heavy-duty operation and avoids lubrication failure caused by local high temperature. The sealing system adopts heavy-duty double-lip oil seal + labyrinth seal combined design, with high-elasticity corrosion-resistant O-rings and sealant reinforcement, achieving IP65 protection level and effectively preventing the intrusion of cutting fluid, metal dust and other impurities in the workshop environment. The housing is designed with large-area integral heat dissipation fins, and the heat dissipation efficiency is increased by 30% compared with traditional models. The product can work normally in the operating temperature range of -20℃ to +140℃, adapting to the harsh working environment of large-scale machining workshops.
5. Modular Heavy-Duty Installation, Convenient Maintenance
Adopting modular heavy-duty design, the series supports multiple installation modes such as large-size base-mounted, flange-mounted (B5/B14/B35), torque arm-mounted with shock absorber and shaft-mounted with胀紧 sleeve, which can be flexibly adapted to the layout requirements of different large-scale equipment. The output shaft is available in extra-large-diameter solid shaft (flat key/spline) and ultra-high-torque hollow shaft (locking disk connection) types, with shaft diameter ranging from 100mm to 220mm, which can be directly connected to the actuator of large-scale equipment. The centralized large-diameter oil filling port, oil drainage port and high-temperature resistant 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 large-scale equipment.
III. Typical Application Fields: Focus on Large-Scale Smart Equipment, Empowering Heavy-Duty Manufacturing
With its exclusive heavy-duty precision indexing, high-rigidity anti-impact, graded heavy-duty output and harsh environment adaptation performance, Weigao large-scale RV Series Worm Gear Units have become the core transmission choice for large-scale smart equipment, and their typical application fields include:
- Large CNC Machine Tools: Large CNC machining center rotating workbenches, heavy-duty CNC lathe main transmission systems, large-scale gantry milling machine feed mechanisms, adapting to heavy workpiece bearing, precision indexing and strong cutting impact environments;
- Heavy-Duty Industrial Robots: Heavy-duty handling robot bases, large-scale stamping robot actuators, engineering robot transmission systems, adapting to heavy load handling, frequent start-stop and impact load environments;
- Large-Scale Automated Production Lines: Automobile body welding production line main conveyors, heavy-duty parts assembly line rotating platforms, large-scale packaging equipment main drives, adapting to heavy load continuous operation, variable load and harsh workshop environments;
- Heavy-Duty Conveying Equipment: Large-scale mine belt conveyor main drives, port heavy-duty loading and unloading conveyor systems, adapting to heavy load, high dust and long-distance continuous operation environments;
- Large-Scale Precision Testing Equipment: Large-scale workpiece precision detection platforms, aerospace component testing rotating mechanisms, adapting to heavy workpiece bearing, ultra-high precision indexing and clean laboratory environments;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
| Item | Specification Range |
| Motor Power Adaptation | 11kW - 75kW |
| Reduction Ratio | 10 - 120 (Single-stage/Multi-stage Combination) |
| Rated Output Torque | 5000N·m - 25000N·m (Graded by Model) |
| Transmission Efficiency | 85% - 93% (Depending on Model and Reduction Ratio) |
| Operating Noise | ≤62dB - ≤68dB (Measured at 1m Distance) |
| Protection Level | IP65 (Customizable to IP67 for Special Environments) |
| Operating Temperature | -20℃ - +140℃ |
| Installation Method | Large-Size Base-mounted, Flange-mounted (B5/B14/B35), Torque Arm-mounted with Shock Absorber, Shaft-mounted with Tension Sleeve |
| Output Shaft Type | Extra-Large-Diameter Solid Shaft (Flat Key/Spline), Ultra-High-Torque Hollow Shaft (Locking Disk Connection), Shaft Diameter: 100mm - 220mm |
V. Installation and Maintenance: Scientific Operation, Maximizing Performance
During installation, ensure that the coaxiality error between the reducer and the motor is ≤0.08mm to ensure precision indexing and transmission stability under heavy load. For large-scale equipment installation, adopt reinforced installation base with shock absorption pads to reduce equipment vibration impact. Select the appropriate lubricating oil according to the working conditions: use 320# heavy-duty synthetic worm gear oil for normal temperature and general heavy load, and 460# high-temperature resistant heavy-duty synthetic worm gear oil for high temperature and ultra-heavy load. Regularly check the oil level, oil quality, oil temperature, worm gear meshing status and fastener tightness; replace the lubricating oil after the first 1500 hours of operation, and perform comprehensive maintenance every 4500 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 indexing deviation occur during operation, stop the machine immediately for inspection and troubleshooting.
VI. Conclusion: Heavy-Duty Precision Transmission Leader, Empowering Large-Scale Smart Manufacturing
Adhering to the design philosophy of "Heavy-Duty Bearing, Precision Indexing, High Rigidity and Stable Operation", Weigao large-scale RV Series Worm Gear Units (RV090/RV110/RV130/RV150) focus on the core transmission needs of large-scale smart equipment, integrating multiple exclusive technologies such as reinforced worm gear meshing, high-rigidity structural design and intelligent circulating lubrication. It breaks through the performance limitations of traditional large-scale worm gear units in heavy-duty precision transmission scenarios, providing stable, reliable and high-precision power transmission solutions for large CNC machine tools, heavy-duty industrial robots, large-scale automated production lines and other key industries. We will continue to rely on advanced heavy-duty precision transmission technology, deeply explore the personalized needs of different large-scale smart manufacturing scenarios, provide customized product solutions and global after-sales service support, and work with customers to promote the upgrade of large-scale smart manufacturing technology. All models of the large-scale RV series have passed strict international certifications, fully complying with the technical standards and safety requirements of global large-scale equipment industries, and are committed to becoming a trusted partner in the global large-scale smart manufacturing precision transmission field.
Download
