HB-Series Industrial Gear Reducer (B4SV/H2HV/H3HV/H4HV/B2HV/B3HV): High-Protection Anti-Corrosion Grading, Empowering Heavy-Duty Operation in Harsh Environments
I. Product Overview: High-Protection Anti-Corrosion Graded Configuration, Meeting Heavy-Duty Transmission Needs in Harsh Environments
Weigao’s HB-Series Industrial Gear Reducer, covering updated core models B4SV, H2HV, H3HV, H4HV, B2HV and B3HV, is a high-reliability power transmission device specialized in core industrial scenarios requiring high protection, anti-corrosion and heavy-duty operation in harsh environments. Based on an upgraded dual-series (HV/HV-B) high-protection anti-corrosion graded configuration design platform, this series integrates advanced anti-corrosion heavy-duty helical gear technology, enhanced protection structural design, anti-corrosion coating technology and flexible modular assembly technology, realizing an excellent balance of graded anti-corrosion protection adaptation, high torque transmission, stable operation and harsh environment compatibility. It effectively solves the pain points of traditional reducers such as poor anti-corrosion performance, weak protection capability, easy failure in harsh environments and difficult matching with heavy-duty equipment in corrosive scenarios, and can maintain stable and reliable power output in working conditions involving heavy load, continuous operation, frequent impact, high humidity, high corrosion, dust accumulation and salt spray. With its high-protection anti-corrosion graded configuration advantages and stable harsh-environment performance, it has become a core transmission component in industries such as marine engineering, coastal port handling, chemical industry, salt-making industry and large-scale sewage treatment, providing high-reliability power support for heavy-duty industrial production in harsh environments. As an upgraded harsh-environment heavy-duty 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 anti-corrosion reliability and harsh-environment adaptation value.
II. Core Advantages: Six Core Strengths, Shaping Heavy-Duty Transmission Benchmarks
1. Graded Anti-Corrosion Helical Transmission, Efficient & Durable
Adopting precision-ground anti-corrosion heavy-duty helical gears with optimized tooth profile, high-strength modulus design, advanced tooth surface carburizing strengthening technology and multi-layer anti-corrosion coating treatment, the series achieves meshing accuracy up to GB/T 10095.2 Class 6 standard. The parallel-axis helical transmission structure with reinforced rib, thickened wall and anti-corrosion sealing optimization design ensures deep and uniform meshing between gears, reasonable force distribution and small transmission shock, reducing transmission backlash to ≤3arcmin. The transmission efficiency reaches 94%-96% for single-stage transmission and 92%-95% for multi-stage transmission, effectively reducing energy loss in long-term heavy-duty operation in harsh environments. The fully enclosed integral cast iron housing with integrated anti-corrosion coating and heat dissipation fins combines excellent structural rigidity, anti-corrosion performance and heat dissipation functions, with operating noise ≤75dB at 1m distance, ensuring stable and durable operation even in high-corrosion, high-humidity and dusty harsh working environments.
2. Dual-Series High-Protection Anti-Corrosion Graded Configuration, Precise Harsh-Environment Heavy-Duty Adaptation
The six core models of the series are divided into HV and HV-B dual high-protection anti-corrosion series with targeted graded configuration to meet differentiated harsh-environment heavy-duty transmission needs: HV-series models (H2HV, H3HV, H4HV) are standard anti-corrosion heavy-duty models, integrating anti-corrosion coating and enhanced protection structure, suitable for harsh-environment heavy-duty equipment such as coastal port conveyors, chemical industry auxiliary machinery and medium-sized sewage treatment equipment; among them, H2HV is small-medium torque anti-corrosion model, H3HV/H4HV are large torque anti-corrosion enhanced models. HV-B-series models (B2HV, B3HV, B4SV) are ultra-heavy load high-protection anti-corrosion enhanced models with reinforced anti-corrosion shaft, thickened anti-corrosion gear, high-strength corrosion-resistant bearing and full-sealed protection design, ideal for ultra-heavy-load harsh-environment equipment such as marine engineering machinery, heavy coastal port container cranes, high-load chemical reaction kettle auxiliary systems and salt-making industry heavy-duty machinery. This dual high-protection anti-corrosion series graded design ensures precise matching of different heavy load levels, corrosion intensity and protection level requirements, further improving equipment operation stability and service life in harsh environments.
3. High Torque Bearing Capacity, Durable Harsh-Environment Heavy-Duty Operation
Gears and transmission shafts are made of high-strength 42CrMo alloy steel with anti-corrosion strengthening treatment (HV-series) and 40CrNiMoA ultra-high-strength alloy steel with multi-layer anti-corrosion heat treatment (HV-B-series), processed through precision forging, carburizing, quenching, tempering, precision grinding and multi-layer anti-corrosion coating processes (including zinc plating, passivation and anti-corrosion paint spraying). The surface hardness reaches HRC 62-65, and the core hardness is HRC 35-38, ensuring excellent wear resistance, impact resistance, corrosion resistance, fatigue resistance and torque transmission stability. The optimized gear modulus, tooth width, shaft diameter and anti-corrosion structure design for each model ensures that the rated output torque of the series is precisely graded from 1500N·m to 38000N·m (H2HV: 1500-3500N·m; H3HV: 3500-12000N·m; H4HV: 12000-28000N·m; B2HV: 16000-26000N·m; B3HV: 26000-35000N·m; B4SV: 35000-38000N·m). The integral cast iron housing with high rigidity, thickened wall and multi-layer anti-corrosion design ensures no deformation or corrosion under ultra-heavy load and harsh environment, ensuring a service life of more than 15 years under normal maintenance in harsh heavy-duty environments.
4. Modular Harsh-Environment Heavy-Duty Installation, Flexible Layout Adaptation
The series adopts an upgraded harsh-environment heavy-duty modular design, supporting multiple installation modes such as base-mounted, flange-mounted (B5/B14), torque arm-mounted, shaft-mounted, flange-output mounted and anti-corrosion mobile base-mounted, which can be flexibly selected according to the diversified layout requirements of harsh-environment heavy-duty industrial equipment. The output shaft is configured with ultra-heavy-duty anti-corrosion reliable options such as extra-large-diameter anti-corrosion solid shaft with flat key, high-strength anti-corrosion spline solid shaft, extra-large-torque anti-corrosion hollow shaft with locking disk and corrosion-resistant sleeve-equipped shaft. It can be precisely matched with motors with power ranging from 5kW to 320kW and reduction ratios of 5-400 (single-stage/multi-stage combination). The standardized ultra-heavy-duty interface design with reinforced anti-corrosion connection parts and full-sealed protection facilitates quick installation and replacement in harsh workshops, coastal sites and outdoor harsh environments, reducing construction difficulty and time cost, and adapting to the layout needs of various harsh-environment core heavy-duty industrial equipment.
5. Enhanced Full-Sealed Anti-Corrosion & Heat Dissipation, Wide Harsh-Environment Adaptability
Equipped with a six-layer enhanced full-sealed anti-corrosion system composed of heavy-duty high-temperature resistant anti-corrosion double-lip oil seal, labyrinth seal with anti-corrosion coating, high-elasticity corrosion-resistant O-ring, anti-corrosion sealant, stainless steel dust-proof cover with filter and anti-corrosion gasket, the reducer achieves IP67 protection level (IP68 can be customized for extreme harsh environments such as long-term immersion). This sealing structure can effectively prevent the intrusion of water vapor, salt spray, corrosive gas, dust, gravel and chemical media in harsh working environments, avoid oil leakage, internal component corrosion and wear, and achieve long-term reliable anti-corrosion protection. The optimized internal oil circuit design with multi-point lubrication, anti-corrosion oil filter, oil cooler and large-area integrated anti-corrosion heat dissipation fins on the housing ensures sufficient lubrication, impurity filtration, rapid heat dissipation and anti-corrosion protection of all transmission components during high-load, high-temperature, high-humidity and high-corrosion operation, and the product can work normally in the operating temperature range of -35℃ to +125℃, adapting to most harsh heavy-duty working conditions such as marine engineering sites, coastal port terminals, chemical workshops, salt-making plants and outdoor high-humidity heavy-duty sites.
6. Anti-Corrosion Convenient Maintenance, Cost-Effective Harsh-Environment Operation
The modular and ultra-heavy-duty structural design with anti-corrosion protection makes component disassembly and maintenance more convenient, and the high interchangeability of anti-corrosion spare parts between the same series reduces maintenance difficulty and time cost in harsh environments. The centralized and protected extra-large-diameter anti-corrosion oil filling port, oil drainage port, high-temperature resistant explosion-proof transparent oil level observation window with anti-corrosion coating and built-in anti-corrosion oil filter facilitate daily lubrication management, real-time oil level monitoring, impurity cleaning and anti-corrosion maintenance. It is recommended to use 320#/460#/680# anti-corrosion ultra-heavy-duty industrial gear oil, which further enhances the anti-corrosion performance, wear resistance, load-bearing capacity and high-temperature resistance of internal components; the first oil change is after 1000 hours of operation, and regular maintenance and oil change are performed every 4500 hours thereafter for harsh working conditions. The high reliability, long service life, ultra-strong anti-corrosion protection capacity and durable performance of the product effectively reduce the frequency of maintenance and replacement in harsh environments, significantly lowering the total operation cost of customers.
III. Application Fields: Harsh-Environment Heavy-Duty Coverage, Boosting Industrial Production in Adverse Conditions
With its dual high-protection anti-corrosion series graded configuration, ultra-high torque bearing capacity, harsh-environment installation adaptation, reliable transmission and wide harsh-environment adaptability, Weigao’s HB-Series Industrial Gear Reducer (B4SV/H2HV/H3HV/H4HV/B2HV/B3HV models) has been widely applied in various harsh-environment core heavy-duty industrial fields:
- Marine Engineering: Marine loading and unloading machinery, offshore platform auxiliary equipment, ship deck machinery, adapting to ultra-heavy-load, salt spray corrosion and high-humidity working environments;
- Coastal Port Handling: Heavy coastal port container cranes, large coastal bulk cargo conveyors, port loading and unloading hoists, adapting to ultra-heavy-load, salt spray corrosion and frequent start-stop working environments;
- Chemical Industry: Chemical reaction kettle auxiliary machinery, chemical material conveying systems, corrosive waste treatment equipment, adapting to high-corrosion, high-temperature and heavy-load working environments;
- Salt-Making & Marine Chemical Industry: Salt-making industry heavy-duty machinery, marine chemical production line auxiliary equipment, brine conveying systems, adapting to strong corrosion, high-humidity and heavy-load working environments;
- Large Sewage & Waste Treatment: Large-scale sewage treatment plant heavy-duty water pumps, hazardous waste treatment equipment, desulfurization and denitrification systems in harsh environments, adapting to heavy-load, high-corrosion, harsh environment and continuous working conditions;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
| Item | Specification Range |
| Motor Power Adaptation | 5kW - 320kW |
| Reduction Ratio | 5 - 400 (Single-stage/Multi-stage Combination) |
| Rated Output Torque | 1500N·m - 38000N·m (Dual High-Protection Anti-Corrosion Series Graded) |
| Transmission Efficiency | 92% - 96% (Single-stage/Multi-stage) |
| Operating Noise | ≤75dB (Measured at 1m Distance) |
| Protection Level | IP67 (IP68 Customizable) |
| Operating Temperature | -35℃ - +125℃ |
| Installation Method | Base-mounted, Flange-mounted (B5/B14), Torque Arm-mounted, Shaft-mounted, Flange-output Mounted, Anti-Corrosion Mobile Base-mounted |
| Output Shaft Type | Extra-Large-Diameter Anti-Corrosion Solid Shaft (Flat Key/Spline), Extra-Large-Torque Anti-Corrosion Hollow Shaft (Locking Disk), Corrosion-Resistant Sleeve-Equipped Shaft |
V. Installation and Maintenance: Scientific Operation, Maximizing Performance
During installation, ensure that the coaxiality error between the reducer and the motor is ≤0.12mm to avoid affecting transmission stability, anti-corrosion performance and ultra-heavy load-bearing capacity. For ultra-heavy-duty, high-vibration and high-corrosion environment installation, adopt reinforced concrete installation base with shock-absorbing layer, anti-corrosion coating and high-performance shock-absorbing pads to reduce vibration impact and prevent base corrosion. Ensure that all connection parts are fully sealed and anti-corrosion treated to avoid corrosion at the connection gaps. Select the appropriate lubricating oil according to the working conditions: use 320# anti-corrosion ultra-heavy-duty industrial gear oil for normal temperature and medium-heavy load, 460# for high temperature and heavy load, and 680# for ultra-high load, high-temperature, high-corrosion and continuous operation. Regularly check the oil level, oil quality, gear meshing status, fastener tightness, heat dissipation fin cleanliness, oil filter blockage and anti-corrosion coating integrity; replace the lubricating oil after the first 1000 hours of operation, and perform comprehensive maintenance every 4500 hours thereafter for harsh working conditions, including checking bearing temperature, sealing performance, housing deformation, gear wear and corrosion status. If abnormal phenomena such as excessive noise, obvious vibration, oil leakage, overheating, torque fluctuation or corrosion damage occur during operation, stop the machine immediately for inspection and troubleshooting.
VI. Conclusion: High-Protection Anti-Corrosion Graded Driven, Creating Harsh-Environment Industrial Transmission Value
Adhering to the design philosophy of "High-Protection Anti-Corrosion Grading, Ultra-Heavy-Duty Reliability, Harsh-Environment Adaptation and Stability", Weigao’s HB-Series Industrial Gear Reducer (B4SV/H2HV/H3HV/H4HV/B2HV/B3HV models) focuses on the stable and efficient transmission needs of harsh-environment core heavy-duty industrial fields, and continuously optimizes product structure and high-protection anti-corrosion technology. Whether in anti-corrosion heavy-duty transmission, ultra-heavy load harsh-environment operation or complex high-corrosion harsh environment scenarios, this series can provide stable, efficient and durable power transmission solutions for customers with its dual high-protection anti-corrosion series graded configuration, ultra-high torque bearing capacity and harsh-environment adaptation advantages, helping to improve production stability and efficiency of harsh-environment core industrial equipment. We will continue to focus on the research and development of high-protection anti-corrosion heavy-duty transmission technology, deeply explore the needs of different harsh-environment heavy-duty industrial fields, provide customized product solutions and global after-sales service support, and work with global customers to build a more reliable and efficient harsh-environment core industrial production system. All export products of this series have passed international certifications such as ROHS, CE, ISO9001 and NACE MR0175 (anti-corrosion certification), fully complying with the technical standards and safety requirements of various countries and regions for harsh-environment equipment, ensuring smooth application in global harsh-environment heavy-duty industrial markets.
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