HB-Series Industrial Gear Reducer (H4FH/B2KH/B2FH/B3KH/B3FH/B4KH): Heavy-Duty Anti-Fatigue & Intelligent Adaptation, Empowering Multi-Condition Linked Heavy-Duty Operation

I. Product Overview: Heavy-Duty Anti-Fatigue Graded Configuration, Meeting Multi-Condition Linked Transmission Needs

Weigao’s HB-Series Industrial Gear Reducer, covering updated core models H4FH, B2KH, B2FH, B3KH, B3FH and B4KH, is a high-reliability power transmission device specialized in core industrial scenarios requiring heavy-duty anti-fatigue performance and stable operation in multi-condition linked environments. Based on an upgraded dual-series (KH/FH) heavy-duty anti-fatigue intelligent configuration design platform, this series integrates advanced fatigue-resistant heavy-duty helical gear technology, intelligent load-adaptive structural design, high-strength material modification and modular intelligent assembly technology, realizing an excellent balance of graded anti-fatigue adaptation, high torque transmission, intelligent load matching and multi-condition compatibility. It effectively solves the pain points of traditional reducers such as poor anti-fatigue performance, weak load adaptive capacity, easy failure under multi-condition switching and difficult matching with linked heavy-duty equipment, and can maintain stable and reliable power output in working conditions involving heavy load, continuous operation, multi-condition switching, alternating load and frequent linkage. With its heavy-duty anti-fatigue advantages and intelligent multi-condition adaptation performance, it has become a core transmission component in industries such as intelligent mining, heavy-duty conveyor systems, large-scale port machinery, metallurgical continuous casting and hydropower station equipment, providing high-reliability power support for multi-condition linked heavy-duty industrial production. As an upgraded intelligent 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-fatigue reliability and multi-condition adaptation value.

II. Core Advantages: Six Core Strengths, Shaping Heavy-Duty Transmission Benchmarks

1. Graded Anti-Fatigue Helical Transmission, Stable & Long-Lasting

Adopting precision-ground fatigue-resistant heavy-duty helical gears with optimized tooth profile and modified tooth surface, high-toughness anti-fatigue modulus design, advanced multi-stage carburizing quenching technology and anti-fatigue nitriding treatment, the series achieves meshing accuracy up to GB/T 10095.2 Class 4 standard. The parallel-axis helical transmission structure with reinforced fatigue-resistant rib, elastic buffer wall and intelligent heat dissipation optimization design ensures smooth and uniform meshing between gears, balanced force distribution and minimal fatigue damage, reducing transmission backlash to ≤2.2arcmin. The transmission efficiency reaches 96%-98% for single-stage transmission and 94%-97% for multi-stage transmission, effectively reducing energy loss in long-term multi-condition linked heavy-duty operation. The fully enclosed integral cast iron housing with integrated anti-corrosion coating and intelligent temperature-controlled heat dissipation fins combines excellent structural rigidity, anti-fatigue toughness and adaptive heat dissipation functions, with operating noise ≤71dB at 1m distance, ensuring stable and long-lasting operation even in heavy load, multi-condition switching and alternating impact harsh working environments.

2. Dual-Series Heavy-Duty Anti-Fatigue Graded Configuration, Precise Multi-Condition Adaptation

The six core models of the series are divided into KH and FH dual heavy-duty anti-fatigue series with targeted graded configuration to meet differentiated multi-condition linked transmission needs: KH-series models (B2KH, B3KH, B4KH) are standard heavy-duty anti-fatigue models, integrating high-strength anti-fatigue material and adaptive load structure, suitable for multi-condition linked heavy-duty equipment such as intelligent mining belt conveyors, metallurgical continuous casting auxiliary machinery and medium-sized port loading equipment; among them, B2KH is small-medium torque anti-fatigue model, B3KH/B4KH are large torque anti-fatigue enhanced models. FH-series models (B2FH, B3FH, H4FH) are ultra-heavy load anti-fatigue & intelligent adaptation enhanced models with reinforced fatigue-resistant shaft, modified wear-resistant gear, high-precision adaptive bearing and integrated intelligent monitoring design, ideal for ultra-heavy-load multi-condition linked equipment such as large-scale port container cranes, hydropower station hoisting machinery, heavy-duty mining excavators and large-scale continuous conveyor systems. This dual heavy-duty anti-fatigue series graded design ensures precise matching of different heavy load levels, condition switching frequency and alternating impact requirements, further improving equipment operation stability and service life in multi-condition linked environments.

3. Ultra-High Torque & Anti-Fatigue Bearing Capacity, Durable Multi-Condition Operation

Gears and transmission shafts are made of high-strength 40CrNiMoA alloy steel with multi-stage anti-fatigue treatment (KH-series) and 34CrNiMo6 ultra-high-strength alloy steel with nano-modification anti-fatigue treatment (FH-series), processed through precision forging, multi-stage heat treatment, precision grinding and anti-fatigue coating processes (including anti-fatigue ceramic coating and anti-corrosion passivation treatment). The surface hardness reaches HRC 64-67, and the core hardness is HRC 39-43, ensuring excellent anti-fatigue performance, super load-bearing capacity, wear resistance and torque transmission stability even under long-term multi-condition switching and alternating impact. The optimized gear modulus, tooth width, shaft diameter and anti-fatigue structure design for each model ensures that the rated output torque of the series is precisely graded from 2200N·m to 45000N·m (B2KH: 2200-5000N·m; B3KH: 5000-18000N·m; B4KH: 18000-35000N·m; B2FH: 22000-32000N·m; B3FH: 32000-40000N·m; H4FH: 40000-45000N·m). The integral cast iron housing with high rigidity, thickened wall and anti-fatigue design ensures no deformation or fatigue damage under ultra-heavy load and multi-condition alternating impact, ensuring a service life of more than 18 years under normal maintenance in multi-condition heavy-duty environments.

4. Modular Intelligent Installation, Flexible Linkage Layout Adaptation

The series adopts an upgraded modular intelligent design, supporting multiple installation modes such as base-mounted, flange-mounted (B5/B14), torque arm-mounted with buffer pad, shaft-mounted with quick coupling, flange-output mounted and mobile base-mounted with adaptive shock absorption, which can be flexibly selected according to the diversified linkage layout requirements of multi-condition heavy-duty industrial equipment. The output shaft is configured with ultra-heavy-duty reliable options such as extra-large-diameter anti-fatigue solid shaft with flat key, high-strength spline solid shaft, extra-large-torque hollow shaft with locking disk and wear-resistant sleeve-equipped shaft. It can be precisely matched with motors with power ranging from 8kW to 400kW and reduction ratios of 6-450 (single-stage/multi-stage combination). The standardized intelligent interface design with reinforced linkage connection parts and dust-proof protection facilitates quick installation, replacement and linkage debugging in mining sites, port terminals and hydropower stations, reducing construction difficulty and time cost, and adapting to the layout needs of various multi-condition linked core heavy-duty industrial equipment.

5. Enhanced Sealed Anti-Corrosion & Intelligent Heat Dissipation, Wide Multi-Condition Adaptability

Equipped with a seven-layer enhanced sealed anti-corrosion system composed of heavy-duty high-temperature resistant double-lip oil seal, labyrinth seal with anti-corrosion coating, high-elasticity anti-fatigue O-ring, high-temperature resistant sealant, stainless steel dust-proof cover with intelligent filter and anti-impact gasket, the reducer achieves IP68 protection level (customizable for deep-water immersion environments). This sealing structure can effectively prevent the intrusion of dust, moisture, corrosive gas and ore particles in multi-condition working environments, avoid oil leakage, internal component corrosion and blockage, and achieve long-term reliable anti-corrosion protection. The optimized internal oil circuit design with multi-point intelligent lubrication, high-precision oil filter, intelligent oil cooler and large-area integrated temperature-controlled heat dissipation fins on the housing ensures sufficient lubrication, impurity filtration, adaptive temperature control and anti-fatigue protection of all transmission components during high-load, multi-condition switching, alternating impact and high-temperature operation, and the product can work normally in the operating temperature range of -30℃ to +135℃, adapting to most multi-condition heavy-duty working conditions such as intelligent mining sites, port terminals, metallurgical workshops and hydropower station working areas.

6. Intelligent Convenient Maintenance, Cost-Effective Multi-Condition Operation

The modular intelligent structural design with anti-fatigue protection makes component disassembly and maintenance more convenient, and the high interchangeability of anti-fatigue spare parts between the same series reduces maintenance difficulty and time cost in multi-condition environments. The centralized and protected extra-large-diameter oil filling port, oil drainage port, high-temperature resistant explosion-proof transparent oil level observation window with intelligent monitoring function and built-in high-precision oil filter facilitate daily lubrication management, real-time oil level monitoring, impurity cleaning and anti-fatigue maintenance. It is recommended to use 320#/460#/680# anti-fatigue ultra-heavy-duty industrial gear oil, which further enhances the anti-fatigue performance, wear resistance, load-bearing capacity and high-temperature resistance of internal components; the first oil change is after 1200 hours of operation, and regular maintenance and oil change are performed every 4800 hours thereafter for multi-condition working conditions. The high reliability, long service life, ultra-strong heavy-duty anti-fatigue capacity and durable performance of the product effectively reduce the frequency of maintenance and replacement in multi-condition environments, significantly lowering the total operation cost of customers.

III. Application Fields: Multi-Condition Heavy-Duty Coverage, Boosting Intelligent Industrial Production

With its dual heavy-duty anti-fatigue series graded configuration, ultra-high torque bearing capacity, intelligent installation adaptation, reliable transmission and wide multi-condition adaptability, Weigao’s HB-Series Industrial Gear Reducer (H4FH/B2KH/B2FH/B3KH/B3FH/B4KH models) has been widely applied in various multi-condition linked core heavy-duty industrial fields:

• Intelligent Mining: Intelligent mining excavators, long-distance conveyor systems, mining hoisting machinery, adapting to ultra-heavy-load, multi-condition switching and alternating impact working environments;
• Metallurgical Continuous Casting: Metallurgical continuous casting machines, steel rolling production line conveyors, large-scale metallurgical furnace auxiliary systems, adapting to heavy-load, high-temperature and multi-condition linked working environments;
• Port Machinery: Large-scale port container cranes, bulk cargo loading and unloading machinery, port terminal linkage conveyors, adapting to ultra-heavy-load, frequent linkage and salt spray corrosion working environments;
• Hydropower Station Equipment: Hydropower station hoisting machinery, water pump transmission systems, tailwater trolley drive equipment, adapting to heavy-load, humid environment and stable linkage working environments;
• Heavy-Duty Conveyor Systems: Large-scale logistics warehouse linkage conveyors, coal-fired power plant coal conveying systems, mining area material transfer conveyors, adapting to heavy-load, continuous operation and multi-condition switching working conditions;

IV. Technical Parameters: Precise Matching, Meeting Diverse Needs

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 avoid affecting transmission stability, anti-fatigue performance and ultra-heavy load-bearing capacity. For ultra-heavy-duty, multi-condition switching and strong vibration environment installation, adopt reinforced concrete installation base with adaptive shock absorption layer and high-performance buffer pads to reduce vibration impact and equipment fatigue damage. Ensure that all connection parts are fully sealed and reinforced to avoid dust and corrosive gas intrusion and loosening under multi-condition alternating impact. Select the appropriate lubricating oil according to the working conditions: use 320# anti-fatigue 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 and continuous linkage operation. Regularly check the oil level, oil quality, gear meshing status, fastener tightness, heat dissipation fin cleanliness, oil filter blockage and anti-fatigue coating integrity; replace the lubricating oil after the first 1200 hours of operation, and perform comprehensive maintenance every 4800 hours thereafter for multi-condition working conditions, including checking bearing temperature, sealing performance, housing deformation, gear wear and anti-fatigue toughness status. If abnormal phenomena such as excessive noise, obvious vibration, oil leakage, overheating, torque fluctuation or fatigue damage occur during operation, stop the machine immediately for inspection and troubleshooting.

VI. Conclusion: Heavy-Duty Anti-Fatigue Driven, Creating Multi-Condition Industrial Transmission Value

Adhering to the design philosophy of "Heavy-Duty Anti-Fatigue Grading, Intelligent Adaptation, Multi-Condition Stability and High Efficiency", Weigao’s HB-Series Industrial Gear Reducer (H4FH/B2KH/B2FH/B3KH/B3FH/B4KH models) focuses on the stable and efficient transmission needs of multi-condition linked core heavy-duty industrial fields, and continuously optimizes product structure and anti-fatigue intelligent technology. Whether in multi-condition linked heavy-duty transmission, ultra-heavy load continuous operation or complex alternating impact scenarios, this series can provide stable, efficient and durable power transmission solutions for customers with its dual heavy-duty anti-fatigue series graded configuration, ultra-high torque bearing capacity and intelligent multi-condition adaptation advantages, helping to improve production stability and efficiency of multi-condition linked core industrial equipment. We will continue to focus on the research and development of heavy-duty anti-fatigue intelligent transmission technology, deeply explore the needs of different multi-condition linked 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 multi-condition linked core industrial production system. All export products of this series have passed international certifications such as ROHS, CE, ISO9001 and anti-fatigue performance certification, fully complying with the technical standards and safety requirements of various countries and regions for multi-condition heavy-duty equipment, ensuring smooth application in global multi-condition heavy-duty industrial markets.

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