WP Worm Gear Reducer (WPWE/WPWEKO/WPWEK/WPWED/WPWEDKO/WPWEDK): Corrosion-Resistant Heavy-Duty Integrated Type & High-Durability Transmission, Leading Severe Corrosion Industry Applications
I. Product Overview: Corrosion-Resistant Heavy-Duty Configuration, Meeting Severe Corrosion Environment Transmission Needs
Weigao’s WP Series Worm Gear Reducers, covering core corrosion-resistant heavy-duty integrated models WPWE, WPWEKO, WPWEK, WPWED, WPWEDKO and WPWEDK, are high-reliability power transmission devices specially developed for severe corrosion industrial scenarios requiring both heavy-duty transmission and strong corrosion resistance, such as chemical industry desulfurization and denitrification, marine engineering, salt chemical industry. Targeting the pain points of traditional reducers such as poor corrosion resistance, weak load-bearing capacity, short service life and frequent maintenance in severe corrosion environments, this series integrates corrosion-resistant heavy-duty integrated cabinet design, enhanced wear-resistant anti-corrosion transmission technology, multi-layer reinforced sealing protection and efficient heat dissipation optimization. It realizes a perfect combination of strong corrosion resistance guarantee, heavy-duty load-bearing transmission, high-precision stable operation and long-life durability, and can stably operate in complex working conditions involving strong acid, strong alkali, salt fog, high humidity, heavy load and continuous operation. As a core transmission component for key severe corrosion environment equipment, this corrosion-resistant heavy-duty integrated WP series is widely applied in chemical desulfurization equipment, marine deck machinery, salt chemical reaction kettles, sewage treatment systems and other industries, providing corrosion-resistant, stable and reliable power support for global severe corrosion industrial production projects. The product has passed international certifications such as ISO 12944-6 C5-M corrosion resistance certification, IP68 protection certification (submersible type customizable), ATEX Ex d IIC T4 explosion-proof certification (for explosive corrosion scenarios), and is trusted by more than 50 countries and regions for its excellent severe corrosion environment adaptation performance.
II. Core Advantages: Five Corrosion-Resistant Transmission Strengths, Defining Severe Corrosion Industry Standards
1. Corrosion-Resistant Heavy-Duty Integrated Cabinet, Multi-Attitude Stable Installation
The series adopts a corrosion-resistant heavy-duty integrated cabinet structure optimized by finite element analysis, and the cabinet is made of HT350 high-strength cast iron with special anti-corrosion treatment (inner wall: tetrafluoroethylene coating; outer wall: double-layer galvanizing + polyurethane spraying), which can effectively resist the erosion of strong acid, strong alkali, salt fog and other corrosive media, meeting the strict corrosion resistance requirements of severe corrosion industries. At the same time, the cabinet adopts heavy-duty reinforced design, with wall thickness increased by 60% compared with ordinary models, and the maximum radial load bearing capacity reaches 35kN. The six core models cover diversified input-output attitudes to meet extreme severe corrosion environment equipment layout needs: WPWE (standard corrosion-resistant heavy-duty type), WPWEKO (corrosion-resistant heavy-duty type with output shaft upward), WPWEK (corrosion-resistant heavy-duty type with input shaft upward), WPWED (corrosion-resistant heavy-duty type with output shaft downward), WPWEDKO (corrosion-resistant heavy-duty type with output shaft upward for explosive corrosion scenarios), WPWEDK (corrosion-resistant heavy-duty type with input shaft upward for explosive corrosion scenarios). The cabinet is equipped with corrosion-resistant stainless steel mounting flanges and precision positioning holes on multiple sides, which can flexibly switch between horizontal, vertical, wall-mounted, ceiling-mounted and other installation modes. The installation positioning accuracy error is ≤0.1mm, and the mounting base is designed with anti-vibration, anti-slip and corrosion-resistant gaskets made of EPDM rubber, which effectively ensures the stable and reliable operation of the transmission system under heavy load, vibration and corrosive environment conditions.
2. Enhanced Wear-Resistant Anti-Corrosion Transmission, Heavy-Duty & Stable Operation
The series adopts enhanced wear-resistant anti-corrosion worm gear transmission pair design, the worm is made of 2Cr13Ni2 stainless steel, processed by integral forging, carburizing and quenching, and super-precision grinding, with surface hardness up to HRC 62-65 and tooth surface roughness ≤Ra 0.3μm, and the surface is treated with passivation to enhance corrosion resistance. The worm gear is made of high-wear-resistant and corrosion-resistant nickel-aluminum bronze (ZCuNi10Al1) with precision tooth profile modification, and the meshing contact area reaches more than 95%, realizing uniform force transmission and high-precision operation. The worm shaft adopts large-diameter integral rigid design, and the bearing adopts high-load self-aligning roller bearings with double-sided sealing and anti-corrosion cover, which improves the shaft system bearing capacity by 55% compared with ordinary models. The transmission accuracy error is ≤0.15arcmin, and the transmission system can bear 3.5 times the rated torque impact, which can perfectly match the heavy-load impact working conditions of severe corrosion industries such as chemical desulfurization and marine engineering. The no-load operating noise is ≤58dB, and the load operating noise is ≤65dB (measured at 1m distance), ensuring relatively quiet operation under heavy load and avoiding equipment damage caused by excessive vibration.
3. Integrated Corrosion-Resistant Matching, Wide-Range Power Adaptation
The series supports integrated corrosion-resistant power source matching, and all models are equipped with standard corrosion-resistant motor flanges (compatible with IEC standards) that can be directly matched with 2.2-75kW corrosion-resistant three-phase asynchronous motors, variable frequency motors and explosion-proof motors (for explosive corrosion scenarios). For special severe corrosion scenarios, it can be customized with reinforced corrosion-resistant flange structures and input/output shaft extension designs with anti-corrosion protective sleeves to meet the matching needs of high-power heavy-duty motors. The flange and cabinet are integrally cast with coaxiality error ≤0.03mm, avoiding transmission efficiency loss caused by assembly errors. The junction box is integrated on the cabinet with a sealed and anti-corrosion design, which can directly connect the motor's circuit, simplifying the wiring process and avoiding potential safety hazards caused by corrosion of external wiring. This integrated corrosion-resistant matching design not only improves the product's versatility and reliability in severe corrosion environments, but also reduces the user's equipment procurement cost and debugging cycle.
4. Multi-Layer Reinforced Sealing & Efficient Heat Dissipation, Severe Corrosion Environment Adaptation
The sealing system adopts enhanced six-layer reinforced protection design: outer layer stainless steel anti-corrosion labyrinth seal + middle layer EPDM rubber double-lip oil seal + inner layer tetrafluoroethylene O-ring + bottom layer anti-dust, anti-water and anti-corrosion cover + corrosion-resistant pressure plate + sealant filling, with high-temperature resistant, corrosion-resistant and flame-retardant sealant at the cabinet joint, achieving IP68 protection level (submersible depth up to 1.5m for 24 hours) and effectively preventing the intrusion of strong acid, strong alkali, salt fog, water and other corrosive media in severe corrosion environments, avoiding lubrication failure and transmission system damage caused by corrosion. The cabinet is designed with integral spiral heat dissipation fins, and the heat dissipation area is increased by 45% compared with ordinary models. It adopts optimized forced circulation lubrication with oil cooler, and the built-in high-precision oil filter and oil temperature sensor ensure the cleanliness and temperature stability of lubricating oil. Using special anti-corrosion synthetic worm gear oil, the product can work normally in the operating temperature range of -40℃ to +130℃, adapting to extreme temperature difference and severe corrosion media environments such as low-temperature marine and high-temperature chemical reaction kettles.
5. Long-Life Durability & Easy Maintenance, Cost-Saving Stable Operation
The key components of the product adopt high-wear-resistant, high-temperature resistant, strong corrosion-resistant materials, and the worm gear, worm and bearing undergo special anti-corrosion surface treatment to improve their adaptability to severe corrosion environments. The rated service life reaches more than 18 years under normal maintenance conditions, and the maintenance cycle is extended by 70% compared with ordinary models. The centralized corrosion-resistant oil filling port, large-diameter oil drain port and transparent anti-corrosion oil level observation window facilitate daily lubrication management and maintenance operations. The overall maintenance cost is reduced by 40% compared with similar corrosion-resistant models, significantly saving the user's operation and maintenance costs. In addition, the product is equipped with a wear warning device, which can timely remind users to replace vulnerable parts when the wear of the worm gear and worm reaches a certain level, avoiding sudden failure of the transmission system.
III. Typical Application Fields: Focus on Severe Corrosion Industry, Empowering Stable Production
With its exclusive corrosion-resistant heavy-duty integrated protection, enhanced wear-resistant anti-corrosion transmission, severe corrosion environment adaptation and long-life durability advantages, Weigao corrosion-resistant heavy-duty integrated WP Series Worm Gear Reducers have become the core transmission choice for severe corrosion environment industrial equipment, and their typical application fields include:
- Chemical Desulfurization & Denitrification Industry: Desulfurization tower agitator drives, flue gas denitrification equipment transmission systems, adapting to strong acid and alkali corrosion environments, heavy load and continuous operation needs;
- Marine Engineering Industry: Marine deck crane drives, ship bilge pump transmission systems, adapting to salt fog corrosion environments, high humidity and vibration conditions;
- Salt Chemical Industry: Salt evaporation tank agitator drives, salt transportation conveyor transmission systems, adapting to salt corrosion environments, heavy load and high-temperature conditions;
- Sewage Treatment Industry: Sewage aerator drives, sludge dewatering machine transmission systems, adapting to sewage corrosion environments, continuous operation and low-temperature conditions;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
- Petrochemical Industry: Petrochemical reaction kettle agitator drives, oilfield sewage treatment equipment transmission systems, adapting to oil and chemical corrosion environments, heavy load and explosive conditions;
| Item | Specification Range |
| 2.2kW - 75kW | 1.5kW - 75kW |
| 10 - 80 (Single-stage); 100 - 2000 (Customized Double-stage) | 10 - 80 (Single-stage); 100 - 1500 (Customized Double-stage) |
| 1200N·m - 15000N·m (Graded by Model) | 800N·m - 12000N·m (Graded by Model) |
| 85% - 92% (Depending on Model and Reduction Ratio) | 85% - 93% (Depending on Model and Reduction Ratio) |
| ≤58dB - ≤65dB (Measured at 1m Distance) | ≤58dB - ≤65dB (Measured at 1m Distance) |
| Protection Level | IP68 (Submersible Depth Up to 1.5m for 24h), ISO 12944-6 C5-M Corrosion Resistance Certification, ATEX Ex d IIC T4 Explosion-Proof Certification (Customizable) |
| -40℃ - +130℃ | -30℃ - +120℃ |
| Horizontal-mounted, Vertical-mounted, Wall-mounted, Ceiling-mounted, WPWE (Standard Corrosion-Resistant Heavy-Duty Type), WPWEKO (Corrosion-Resistant Heavy-Duty Type with Output Shaft Upward), WPWEK (Corrosion-Resistant Heavy-Duty Type with Input Shaft Upward), WPWED (Corrosion-Resistant Heavy-Duty Type with Output Shaft Downward), WPWEDKO (Corrosion-Resistant Heavy-Duty Type with Output Shaft Upward for Explosive Corrosion Scenarios), WPWEDK (Corrosion-Resistant Heavy-Duty Type with Input Shaft Upward for Explosive Corrosion Scenarios) | Horizontal-mounted, Vertical-mounted, Wall-mounted, Ceiling-mounted, WPWK (Standard Heavy-Duty Universal Type), WPWKA (Heavy-Duty Universal Type with Input Shaft Downward), WPWKS (Heavy-Duty Universal Type with Input Shaft Upward), WPWKO (Heavy-Duty Universal Type with Output Shaft Upward), WPWKV (Heavy-Duty Universal Type with Input Shaft Vertical), WPWKT (Heavy-Duty Universal Type with Output Shaft Vertical) |
| Solid Shaft Output (Flat Key/Spline, Anti-Corrosion Coating), Hollow Shaft Output (Locking Disk Connection, Corrosion-Resistant Type), Reinforced Shaft Extension (For High-Power Heavy-Duty Motor Matching) | Solid Shaft Output (Flat Key/Spline), Hollow Shaft Output (Locking Disk Connection), Reinforced Shaft Extension (For High-Power Motor Matching), Explosion-Proof Shaft Output (For Hazardous Environment) |
V. Installation and Maintenance: Scientific Operation, Maximizing Performance
During installation, select the corresponding model according to the equipment layout (input/output shaft attitude), corrosion resistance grade requirements, explosion-proof requirements (if any) and power matching needs. For severe corrosion environment installation scenarios, ensure that the coaxiality error between the reducer and the power source is ≤0.1mm, and use corrosion-resistant stainless steel mounting brackets to fix firmly to avoid vibration and displacement during operation. Strictly follow the anti-corrosion installation specifications to ensure that all joint surfaces are free of damage and the sealing performance meets the standard requirements. Select the appropriate special anti-corrosion synthetic lubricating oil according to the working conditions: use 220# for normal temperature and general load, 320# for high temperature and heavy load, and 460# for ultra-heavy load and low temperature. Regularly check the oil level, oil quality, sealing performance, heat dissipation status and wear warning device; replace the lubricating oil after the first 2000 hours of operation, and perform comprehensive maintenance every 5000 hours thereafter, including checking worm gear meshing status, bearing temperature, fastener tightness, heat dissipation fin cleanliness and anti-corrosion layer integrity. If abnormal phenomena such as excessive noise, vibration, oil leakage, overheating or wear warning occur during operation, stop the machine immediately in a safe manner for inspection and troubleshooting.
VI. Conclusion: Severe Corrosion Industry Transmission Leader, Empowering Stable Production Upgrade
Adhering to the design philosophy of "Corrosion-Resistant Heavy-Duty Integration, High-Durability Transmission, Stable Operation and Severe Environment Adaptation", Weigao corrosion-resistant heavy-duty integrated WP Series Worm Gear Reducers (WPWE/WPWEKO/WPWEK/WPWED/WPWEDKO/WPWEDK) focus on the core transmission needs of severe corrosion environment industrial equipment, integrating multiple exclusive technologies such as corrosion-resistant heavy-duty integrated cabinet design, enhanced wear-resistant anti-corrosion transmission and multi-layer reinforced sealing protection. It breaks through the performance limitations of traditional reducers in severe corrosion industrial multi-scenario applications, providing corrosion-resistant, stable and reliable power transmission solutions for chemical desulfurization and denitrification, marine engineering, salt chemical industry and other key industries. We will continue to rely on advanced anti-corrosion transmission technology, deeply explore the personalized needs of different severe corrosion industrial scenarios, provide customized product solutions and global after-sales service support, and work with customers to promote the upgrade of severe corrosion industrial production technology. All models of this corrosion-resistant heavy-duty integrated WP series have passed strict international certifications, fully complying with the technical standards and safety requirements of global severe corrosion industrial fields, and are committed to becoming a trusted partner in the global severe corrosion environment transmission field.
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