HB-Series Industrial Gear Reducer (B4SH/H2HH/H3HH/H4HH/B2HH/B3HH): Enhanced Heavy-Duty Grading, Empowering High-Efficiency Core Operation
I. Product Overview: Graded Configuration Design, Meeting Core Heavy-Duty Transmission Needs
Weigao’s HB-Series Industrial Gear Reducer, covering updated core models B4SH, H2HH, H3HH, H4HH, B2HH and B3HH, is a high-reliability power transmission device specialized in core industrial scenarios requiring enhanced heavy-duty operation and efficient heat dissipation. Based on an upgraded dual-series (HH/BH) graded configuration design platform, this series integrates advanced enhanced heavy-duty helical gear technology, high-efficiency heat dissipation structural design and flexible modular assembly technology, realizing an excellent balance of graded enhanced load adaptation, high torque transmission, efficient heat dissipation and wide compatibility. It effectively solves the pain points of traditional reducers such as insufficient load-bearing margin, poor heat dissipation in long-term heavy-duty operation, single adaptation scenario and difficult matching with high-intensity core equipment, and can maintain stable and reliable power output in working conditions involving ultra-heavy load, continuous high-intensity operation, frequent start-stop, large impact and high-temperature accumulation. With its enhanced graded configuration advantages and efficient heat dissipation performance, it has become a core transmission component in industries such as heavy mining, large-scale cement building materials, port heavy-duty handling, steel smelting and large-scale environmental protection machinery, providing high-stability power support for high-intensity core industrial production. As an upgraded 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 enhanced heavy-duty reliability and efficient adaptation value.
II. Core Advantages: Six Core Strengths, Shaping Heavy-Duty Transmission Benchmarks
1. Graded Heavy-Duty Helical Transmission, Efficient & Stable
Adopting precision-ground enhanced heavy-duty helical gears with optimized tooth profile, high-strength modulus design, advanced tooth surface modification technology and wear-resistant 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 and thickened wall 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 high-intensity heavy-duty operation. The fully enclosed integral cast iron housing with integrated high-efficiency heat dissipation fins combines excellent structural rigidity, shock absorption and heat dissipation functions, with operating noise ≤75dB at 1m distance, ensuring stable operation even in high-temperature and high-intensity heavy-duty working environments.
2. Dual-Series Graded Configuration, Precise Heavy-Duty Adaptation
The six core models of the series are divided into HH and BH dual enhanced series with targeted graded configuration to meet differentiated high-intensity heavy-duty transmission needs: HH-series models (H2HH, H3HH, H4HH) are high-efficiency heat dissipation heavy-duty models, integrating enhanced load-bearing structure and efficient heat dissipation design, suitable for high-intensity continuous operation equipment such as large mining conveyors, cement production line main auxiliary machinery and medium-sized port hoists; among them, H2HH is small-medium torque high-efficiency heat dissipation model, H3HH/H4HH are large torque enhanced high-efficiency heat dissipation models. BH-series models (B2HH, B3HH, B4SH) are ultra-heavy load enhanced models with reinforced shaft and bearing design, ideal for ultra-high-intensity heavy-duty equipment such as large-scale mining excavators, heavy port container cranes, high-load cement mill main transmission systems and steel smelting auxiliary machinery. This dual enhanced series graded design ensures precise matching of different ultra-heavy load levels and high-temperature operation requirements, further improving equipment operation stability and service life.
3. High Torque Bearing Capacity, Durable Heavy-Duty Operation
Gears and transmission shafts are made of high-strength 42CrMo alloy steel (HH-series) and 40CrNiMoA alloy steel with ultra-high strength heat treatment (BH-series), processed through precision forging, carburizing, quenching, tempering, precision grinding and surface strengthening processes. The surface hardness reaches HRC 60-64, and the core hardness is HRC 32-38, ensuring excellent wear resistance, impact resistance, fatigue resistance and torque transmission stability. The optimized gear modulus, tooth width and shaft diameter design for each model ensures that the rated output torque of the series is precisely graded from 800N·m to 30000N·m (H2HH: 800-2000N·m; H3HH: 2000-8000N·m; H4HH: 8000-22000N·m; B2HH: 10000-20000N·m; B3HH: 20000-28000N·m; B4SH: 28000-30000N·m). The integral cast iron housing with high rigidity and thickened wall design ensures no deformation under ultra-heavy load, ensuring a service life of more than 15 years under normal maintenance in high-intensity heavy-duty environments.
4. Modular Heavy-Duty Installation, Flexible Layout Adaptation
The series adopts an upgraded heavy-duty modular design, supporting multiple installation modes such as base-mounted, flange-mounted (B5/B14), torque arm-mounted, shaft-mounted and flange-output mounted, which can be flexibly selected according to the layout of high-intensity heavy-duty industrial equipment. The output shaft is configured with ultra-heavy-duty reliable options such as extra-large-diameter solid shaft with flat key, high-strength spline solid shaft and extra-large-torque hollow shaft with locking disk, and can be precisely matched with motors with power ranging from 2.2kW to 250kW and reduction ratios of 5-400 (single-stage/multi-stage combination). The standardized ultra-heavy-duty interface design with reinforced connection parts facilitates quick installation and replacement in heavy-duty workshops, reducing construction difficulty and time cost, and adapting to the layout needs of various high-intensity core heavy-duty industrial equipment.
5. Enhanced Sealing & Heat Dissipation, Wide Heavy-Duty Environment Adaptability
Equipped with a five-layer enhanced sealing system composed of heavy-duty high-temperature resistant double-lip oil seal, labyrinth seal, high-elasticity O-ring, sealant and dust cover, the reducer achieves IP65 protection level (IP66 can be customized for extreme harsh environments). This sealing structure can effectively prevent the intrusion of dust, coal dust, water vapor, gravel and corrosive media in high-intensity heavy-duty working environments, avoiding oil leakage and internal component wear. The optimized internal oil circuit design with multi-point lubrication and large-area integrated heat dissipation fins on the housing ensures sufficient lubrication and rapid heat dissipation of all transmission components during high-temperature and ultra-high-load operation, and the product can work normally in the operating temperature range of -25℃ to +115℃, adapting to most high-intensity heavy-duty working conditions such as deep mining workshops, large cement plants, port terminals, steel smelting workshops and outdoor high-temperature heavy-duty sites.
6. Convenient Heavy-Duty Maintenance, Cost-Effective Operation
The modular and ultra-heavy-duty structural 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 in high-intensity heavy-duty environments. The centralized and protected extra-large-diameter oil filling port, oil drainage port and high-temperature resistant explosion-proof transparent oil level observation window facilitate daily lubrication management and real-time oil level monitoring. It is recommended to use 320#/460#/680# ultra-heavy-duty industrial gear oil, which further enhances the 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 5000 hours thereafter for high-intensity working conditions. The high reliability, long service life and ultra-strong load-bearing capacity of the product effectively reduce the frequency of maintenance and replacement in high-intensity heavy-duty environments, significantly lowering the total operation cost of customers.
III. Application Fields: Heavy-Duty Core Coverage, Boosting Industrial Production Efficiency
With its dual enhanced series graded configuration, ultra-high torque bearing capacity, efficient heat dissipation performance, reliable transmission and wide high-intensity heavy-duty environment adaptability, Weigao’s HB-Series Industrial Gear Reducer (B4SH/H2HH/H3HH/H4HH/B2HH/B3HH models) has been widely applied in various high-intensity core heavy-duty industrial fields:
- Heavy Mining Industry: Large mine conveyors, mining excavators, coal handling and washing systems, adapting to ultra-heavy-load, dusty and high-temperature working environments;
- Cement & Building Materials: Cement mill main transmission systems, large concrete mixing stations, stone crushing and screening equipment, adapting to ultra-high-load and high-temperature continuous working environments;
- Port Heavy-Duty Handling: Heavy port container cranes, large bulk cargo hoists, port loading and unloading conveyors, adapting to ultra-heavy-load and frequent start-stop working environments;
- Steel Smelting Industry: Steel production line main auxiliary machinery, large-scale steel rolling equipment, blast furnace auxiliary systems, adapting to high-temperature and heavy-load working environments;
- Large Environmental Protection Machinery: Large-scale sewage treatment plant root blowers, garbage incineration plant large conveying systems, desulfurization and denitrification auxiliary equipment, adapting to heavy-load, harsh environment and continuous working conditions;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
| Item | Specification Range |
| Motor Power Adaptation | 2.2kW - 250kW |
| Reduction Ratio | 5 - 400 (Single-stage/Multi-stage Combination) |
| Rated Output Torque | 800N·m - 30000N·m (Dual Enhanced Series Graded) |
| Transmission Efficiency | 92% - 96% (Single-stage/Multi-stage) |
| Operating Noise | ≤75dB (Measured at 1m Distance) |
| Protection Level | IP65 (IP66 Customizable) |
| Operating Temperature | -25℃ - +115℃ |
| Installation Method | Base-mounted, Flange-mounted (B5/B14), Torque Arm-mounted, Shaft-mounted, Flange-output Mounted |
| Output Shaft Type | Extra-Large-Diameter Solid Shaft (Flat Key/Spline), Extra-Large-Torque 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 ≤0.12mm to avoid affecting transmission stability and ultra-heavy load-bearing capacity. For ultra-heavy-duty and high-vibration environment installation, adopt reinforced concrete installation base and high-performance shock-absorbing pads to reduce vibration impact. Select the appropriate lubricating oil according to the working conditions: use 320# 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 and high-temperature continuous operation. Regularly check the oil level, oil quality, gear meshing status, fastener tightness and heat dissipation fin cleanliness; replace the lubricating oil after the first 1000 hours of operation, and perform comprehensive maintenance every 5000 hours thereafter for high-intensity working conditions, including checking bearing temperature, sealing performance, housing deformation and gear wear. If abnormal phenomena such as excessive noise, obvious vibration, oil leakage, overheating or torque fluctuation occur during operation, stop the machine immediately for inspection and troubleshooting.
VI. Conclusion: Graded Heavy-Duty Driven, Creating Core Industrial Transmission Value
Adhering to the design philosophy of "Enhanced Grading, Ultra-Heavy-Duty Reliability, Efficient Heat Dissipation and Stability", Weigao’s HB-Series Industrial Gear Reducer (B4SH/H2HH/H3HH/H4HH/B2HH/B3HH models) focuses on the stable and efficient transmission needs of high-intensity core heavy-duty industrial fields, and continuously optimizes product structure and enhanced heavy-duty technology. Whether in high-efficiency heat dissipation heavy-duty transmission, ultra-heavy load enhanced operation or high-temperature complex heavy-duty environment scenarios, this series can provide stable and efficient power transmission solutions for customers with its dual enhanced series graded configuration, ultra-high torque bearing capacity and efficient heat dissipation advantages, helping to improve production stability and efficiency of high-intensity core industrial equipment. We will continue to focus on the research and development of enhanced heavy-duty transmission technology, deeply explore the needs of different high-intensity 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 high-intensity core 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 high-intensity heavy-duty industrial markets.
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