HB-Series Industrial Gear Reducer (B4DV/H2KH/H2FH/H3KH/H3FH/H4KH): Impact-Resistant & Wear-Resistant Grading, Empowering Heavy-Duty Operation in High-Frequency Start-Stop Scenarios
I. Product Overview: Impact-Resistant & Wear-Resistant Graded Configuration, Meeting Heavy-Duty Transmission Needs in High-Frequency Start-Stop Scenarios
Weigao’s HB-Series Industrial Gear Reducer, covering updated core models B4DV, H2KH, H2FH, H3KH, H3FH and H4KH, is a high-reliability power transmission device specialized in core industrial scenarios requiring impact resistance, wear resistance and heavy-duty operation in high-frequency start-stop environments. Based on an upgraded dual-series (KH/FH) impact-resistant & wear-resistant graded configuration design platform, this series integrates advanced impact-adaptive heavy-duty helical gear technology, enhanced anti-fatigue structural design, wear-resistant material treatment and flexible modular assembly technology, realizing an excellent balance of graded impact-wear adaptation, high torque transmission, stable operation and high-frequency start-stop compatibility. It effectively solves the pain points of traditional reducers such as poor impact resistance, weak wear resistance, easy fatigue failure under high-frequency start-stop and difficult matching with heavy-duty equipment in impact load scenarios, and can maintain stable and reliable power output in working conditions involving heavy load, high-frequency start-stop, frequent impact, strong wear and continuous operation. With its impact-resistant & wear-resistant graded configuration advantages and stable high-frequency operation performance, it has become a core transmission component in industries such as mining crushing, metallurgical forging, construction machinery, port loading and unloading and municipal engineering, providing high-reliability power support for heavy-duty industrial production in high-frequency start-stop and impact load environments. As an upgraded impact-resistant 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 impact-wear reliability and high-frequency operation adaptation value.
II. Core Advantages: Six Core Strengths, Shaping Heavy-Duty Transmission Benchmarks
1. Graded Impact-Resistant Wear-Resistant Helical Transmission, Efficient & Durable
Adopting precision-ground impact-resistant wear-resistant heavy-duty helical gears with optimized tooth profile, high-strength anti-impact modulus design, advanced tooth surface carburizing hardening technology and wear-resistant ceramic coating treatment, the series achieves meshing accuracy up to GB/T 10095.2 Class 5 standard. The parallel-axis helical transmission structure with reinforced anti-impact rib, thickened rigid wall and sealed dust-proof optimization design ensures stable and uniform meshing between gears, reasonable force distribution and minimal impact damage, reducing transmission backlash to ≤2.5arcmin. The transmission efficiency reaches 95%-97% for single-stage transmission and 93%-96% for multi-stage transmission, effectively reducing energy loss in long-term heavy-duty operation in high-frequency start-stop environments. The fully enclosed integral cast iron housing with integrated wear-resistant coating and enhanced heat dissipation fins combines excellent structural rigidity, anti-impact toughness and heat dissipation functions, with operating noise ≤73dB at 1m distance, ensuring stable and durable operation even in high-frequency start-stop, frequent impact and strong wear harsh working environments.
2. Dual-Series Impact-Resistant & Wear-Resistant Graded Configuration, Precise High-Frequency Heavy-Duty Adaptation
The six core models of the series are divided into KH and FH dual impact-resistant & wear-resistant series with targeted graded configuration to meet differentiated high-frequency impact heavy-duty transmission needs: KH-series models (H2KH, H3KH, H4KH) are standard impact-resistant heavy-duty models, integrating high-strength anti-impact material and enhanced wear-resistant structure, suitable for high-frequency impact heavy-duty equipment such as mining belt conveyors, metallurgical auxiliary machinery and medium-sized construction cranes; among them, H2KH is small-medium torque impact-resistant model, H3KH/H4KH are large torque impact-resistant enhanced models. FH-series models (H2FH, H3FH, B4DV) are ultra-heavy load impact-resistant & high-wear-resistant enhanced models with reinforced anti-impact shaft, thickened wear-resistant gear, high-strength impact-resistant bearing and integrated anti-impact protection design, ideal for ultra-heavy-load high-frequency impact equipment such as mining crushers, heavy port container cranes, large forging machinery and heavy construction excavators. This dual impact-resistant & wear-resistant series graded design ensures precise matching of different heavy load levels, impact intensity and wear degree requirements, further improving equipment operation stability and service life in high-frequency start-stop environments.
3. High Torque & Anti-Impact Bearing Capacity, Durable High-Frequency Heavy-Duty Operation
Gears and transmission shafts are made of high-strength 42CrMo alloy steel with anti-impact toughening treatment (KH-series) and 40CrNiMoA ultra-high-strength alloy steel with multi-layer anti-impact heat treatment (FH-series), processed through precision forging, carburizing, quenching, tempering, precision grinding and wear-resistant coating processes (including wear-resistant ceramic coating and anti-corrosion passivation treatment). The surface hardness reaches HRC 63-66, and the core hardness is HRC 38-42, ensuring excellent wear resistance, super impact resistance, fatigue resistance and torque transmission stability even under high-frequency start-stop and frequent impact. The optimized gear modulus, tooth width, shaft diameter and anti-impact structure design for each model ensures that the rated output torque of the series is precisely graded from 2000N·m to 42000N·m (H2KH: 2000-4500N·m; H3KH: 4500-15000N·m; H4KH: 15000-32000N·m; H2FH: 20000-30000N·m; H3FH: 30000-38000N·m; B4DV: 38000-42000N·m). The integral cast iron housing with high rigidity, thickened wall and anti-impact design ensures no deformation or damage under ultra-heavy load and high-frequency impact, ensuring a service life of more than 15 years under normal maintenance in high-frequency heavy-duty environments.
4. Modular High-Frequency Heavy-Duty Installation, Flexible Layout Adaptation
The series adopts an upgraded high-frequency heavy-duty modular design, supporting multiple installation modes such as base-mounted, flange-mounted (B5/B14), torque arm-mounted with anti-impact pad, shaft-mounted, flange-output mounted and mobile base-mounted with shock-absorbing layer, which can be flexibly selected according to the diversified layout requirements of high-frequency heavy-duty industrial equipment. The output shaft is configured with ultra-heavy-duty anti-impact reliable options such as extra-large-diameter anti-impact solid shaft with flat key, high-strength anti-impact spline solid shaft, extra-large-torque anti-impact hollow shaft with locking disk and wear-resistant sleeve-equipped shaft. It can be precisely matched with motors with power ranging from 7kW to 380kW and reduction ratios of 5-400 (single-stage/multi-stage combination). The standardized ultra-heavy-duty interface design with reinforced anti-impact connection parts and dust-proof protection facilitates quick installation and replacement in mining sites, construction sites and port terminals, reducing construction difficulty and time cost, and adapting to the layout needs of various high-frequency core heavy-duty industrial equipment.
5. Enhanced Sealed Dust-Proof & Heat Dissipation, Wide High-Frequency Environment Adaptability
Equipped with a six-layer enhanced sealed dust-proof system composed of heavy-duty high-temperature resistant anti-impact double-lip oil seal, labyrinth seal with wear-resistant coating, high-elasticity anti-impact O-ring, high-temperature resistant sealant, stainless steel dust-proof cover with high-efficiency filter and anti-impact gasket, the reducer achieves IP67 protection level (IP68 can be customized for extreme dust and immersion environments). This sealing structure can effectively prevent the intrusion of dust, gravel, ore particles and moisture in high-frequency impact working environments, avoid oil leakage, internal component wear and blockage, and achieve long-term reliable dust-proof and anti-impact protection. The optimized internal oil circuit design with multi-point forced lubrication, high-precision oil filter, oil cooler and large-area integrated heat dissipation fins on the housing ensures sufficient lubrication, impurity filtration, rapid heat dissipation and anti-impact protection of all transmission components during high-load, high-frequency start-stop, frequent impact and high-temperature operation, and the product can work normally in the operating temperature range of -25℃ to +130℃, adapting to most high-frequency heavy-duty working conditions such as mining sites, construction sites, port terminals, metallurgical workshops and municipal engineering sites.
6. Anti-Impact Convenient Maintenance, Cost-Effective High-Frequency Operation
The modular and ultra-heavy-duty structural design with anti-impact protection makes component disassembly and maintenance more convenient, and the high interchangeability of anti-impact wear-resistant spare parts between the same series reduces maintenance difficulty and time cost in high-frequency impact environments. The centralized and protected extra-large-diameter oil filling port, oil drainage port, high-temperature resistant explosion-proof transparent oil level observation window and built-in high-precision oil filter facilitate daily lubrication management, real-time oil level monitoring, impurity cleaning and anti-impact maintenance. It is recommended to use 320#/460#/680# anti-wear anti-impact ultra-heavy-duty industrial gear oil, which further enhances the wear resistance, impact resistance, load-bearing capacity and high-temperature resistance of internal components; the first oil change is after 800 hours of operation (due to high-frequency impact working conditions), and regular maintenance and oil change are performed every 4000 hours thereafter. The high reliability, long service life, ultra-strong impact-resistant & wear-resistant capacity and durable performance of the product effectively reduce the frequency of maintenance and replacement in high-frequency impact environments, significantly lowering the total operation cost of customers.
III. Application Fields: High-Frequency Impact Heavy-Duty Coverage, Boosting Industrial Production in Severe Working Conditions
With its dual impact-resistant & wear-resistant series graded configuration, ultra-high torque bearing capacity, high-frequency installation adaptation, reliable transmission and wide high-frequency environment adaptability, Weigao’s HB-Series Industrial Gear Reducer (B4DV/H2KH/H2FH/H3KH/H3FH/H4KH models) has been widely applied in various high-frequency impact core heavy-duty industrial fields:
- Mining & Crushing: Mining crushers, mineral processing plant conveyors, permafrost area mining excavators, adapting to ultra-heavy-load, high-frequency impact and strong wear working environments;
- Metallurgical Forging: Metallurgical furnace auxiliary machinery, steel rolling production line conveyors, large forging equipment transmission systems, adapting to heavy-load, high-temperature and high-frequency start-stop working environments;
- Construction Machinery: Heavy construction excavators, large road rollers, high-rise building construction cranes, adapting to heavy-load, high-frequency impact and complex terrain working environments;
- Port Loading & Unloading: Heavy port container cranes, bulk cargo ship loading and unloading machinery, port terminal conveyors, adapting to ultra-heavy-load, high-frequency start-stop and salt spray corrosion working environments;
- Municipal Engineering: Large road construction machinery, municipal sewage treatment plant heavy-duty equipment, urban demolition machinery, adapting to heavy-load, high-frequency impact, harsh environment and continuous working conditions;
IV. Technical Parameters: Precise Matching, Meeting Diverse Needs
| Item | Specification Range |
| Motor Power Adaptation | 7kW - 380kW |
| Reduction Ratio | 5 - 400 (Single-stage/Multi-stage Combination) |
| Rated Output Torque | 2000N·m - 42000N·m (Dual Impact-Resistant & Wear-Resistant Series Graded) |
| Transmission Efficiency | 93% - 97% (Single-stage/Multi-stage) |
| Operating Noise | ≤73dB (Measured at 1m Distance) |
| Protection Level | IP67 (IP68 Customizable) |
| Operating Temperature | -25℃ - +130℃ |
| Installation Method | Base-mounted, Flange-mounted (B5/B14), Torque Arm-mounted with Anti-Impact Pad, Shaft-mounted, Flange-output Mounted, Mobile Base-mounted with Shock-Absorbing Layer |
| Output Shaft Type | Extra-Large-Diameter Anti-Impact Solid Shaft (Flat Key/Spline), Extra-Large-Torque Anti-Impact Hollow Shaft (Locking Disk), Wear-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 ≤0.1mm to avoid affecting transmission stability, anti-impact performance and ultra-heavy load-bearing capacity. For ultra-heavy-duty, high-frequency impact and strong vibration environment installation, adopt reinforced concrete installation base with shock-absorbing layer and high-performance anti-impact shock-absorbing pads to reduce vibration impact and equipment damage. Ensure that all connection parts are fully sealed and reinforced to avoid dust intrusion and loosening under high-frequency impact. Select the appropriate lubricating oil according to the working conditions: use 320# anti-wear anti-impact 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 high-frequency continuous operation. Regularly check the oil level, oil quality, gear meshing status, fastener tightness, heat dissipation fin cleanliness, oil filter blockage and wear-resistant coating integrity; replace the lubricating oil after the first 800 hours of operation, and perform comprehensive maintenance every 4000 hours thereafter for high-frequency impact working conditions, including checking bearing temperature, sealing performance, housing deformation, gear wear and anti-impact toughness status. If abnormal phenomena such as excessive noise, obvious vibration, oil leakage, overheating, torque fluctuation or impact damage occur during operation, stop the machine immediately for inspection and troubleshooting.
VI. Conclusion: Impact-Resistant & Wear-Resistant Graded Driven, Creating High-Frequency Industrial Transmission Value
Adhering to the design philosophy of "Impact-Resistant & Wear-Resistant Grading, Ultra-Heavy-Duty Reliability, High-Frequency Adaptation and Stability", Weigao’s HB-Series Industrial Gear Reducer (B4DV/H2KH/H2FH/H3KH/H3FH/H4KH models) focuses on the stable and efficient transmission needs of high-frequency impact core heavy-duty industrial fields, and continuously optimizes product structure and impact-resistant wear-resistant technology. Whether in high-frequency impact heavy-duty transmission, ultra-heavy load high-frequency operation or complex strong wear scenarios, this series can provide stable, efficient and durable power transmission solutions for customers with its dual impact-resistant & wear-resistant series graded configuration, ultra-high torque bearing capacity and high-frequency adaptation advantages, helping to improve production stability and efficiency of high-frequency impact core industrial equipment. We will continue to focus on the research and development of impact-resistant & wear-resistant heavy-duty transmission technology, deeply explore the needs of different high-frequency impact 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-frequency impact core industrial production system. All export products of this series have passed international certifications such as ROHS, CE, ISO9001 and impact resistance certification, fully complying with the technical standards and safety requirements of various countries and regions for high-frequency impact equipment, ensuring smooth application in global high-frequency heavy-duty industrial markets.
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