Heavy Duty Gearbox

What is a heavy duty gearbox?

Heavy-duty gearboxes are core drive units specifically engineered for industrial applications involving high loads, high torque, and continuous operation. Unlike standard light-duty gearboxes, they offer key advantages such as superior load-bearing capacity, excellent impact resistance, extended service life, and high operational stability. Serving as critical power transmission components for large-scale industrial machinery-including mining equipment, metallurgical systems, port machinery, heavy-duty building material equipment, and energy infrastructure-they precisely meet transmission requirements characterized by low speeds, high torque, sustained heavy loads, and harsh operating conditions. By effectively lowering energy consumption and minimizing transmission losses while ensuring the continuous, stable operation of entire production lines, these gearboxes serve as indispensable core components in the heavy industry sector.

 

 

 

Parallel shaft Industrial Gearbox Models

AH1SH

AH2SH, AH2HH, AH2DH, AH2HM, AH2DM, AH2SV, AH2HV, AH2DV

AH3SH, AH3HH, AH3DH, AH3HM, AH3DM, AH3SV, AH3HV, AH3DV

AH4SH, AH4HH, AH4DH, AH4HM, AH4DM, AH4SV, AH4HV, AH4DV

 

 

Bevel Helical Industrial Gearbox

AB2SH, AB2HH, AB2DH, AB2HM, AB2DM, AB2SV, AB2HV. AB2DV

AB3SH, AB3HH, AB3DH, AB3HM,AB3DM, AB3SV, AB3HV, AB3DV

AB4SH, AB4HH, AB4DH, AB4HM, AB4DM, AB4SV, AB4HV, AB4DV

 

 

Model	Stage	Size	Ratio	Nominal Power (KW)	Nominal Torque(N.m)	Shaft	Mounting
Industrial gearbox	Single-stage	3--19	1.25--5.6	30-4,744	2,200-165,300	S. Solid Shaft H. Hollow Shaft D.Hollow Shaft for Shrink Disk	H:Horizontal V:Vertical M:Horizontal Design Without Feet
	Double-stage	4--26	6.3--28	21-5,193	5,900-843,000
	Three-Stage	5--26	22.4--112	9-4,749	10,600-952,000
	Four-Stage	7--26	100--450	4.1-1,325	18,400-944,000

 

 

• Exceptional load-bearing capacity, designed for extreme heavy-duty applications.
  The housing is cast as a single unit from high-strength cast steel and features a reinforced, thickened-wall design; its resistance to impact, deformation, and compression far exceeds that of standard cast-iron housings, enabling it to withstand instantaneous peak loads and the shock loads associated with frequent start-stop operations. Key gear components are manufactured from premium 20CrMnTi alloy steel and undergo a dual-hardening process-carburizing and quenching followed by low-temperature tempering-resulting in a gear surface hardness of HRC 58–62 and significantly enhanced tooth-root toughness. This effectively prevents issues such as tooth breakage, chipping, and deformation under heavy loads. With a rated torque range of 5,000 N·m to 500,000 N·m, the unit perfectly meets the transmission requirements of various ultra-heavy-duty industrial equipment.
• Precision gear grinding process for low loss and high efficiency
  Utilizing a Grade 5 precision gear grinding process and dynamic tooth profile modification technology, gear meshing accuracy is controlled within the IT5 grade. The significantly improved gear surface finish effectively reduces frictional losses during meshing. Compared to gearboxes manufactured using conventional hobbing processes, transmission efficiency increases by 3%–5%, with an overall efficiency exceeding 96%, resulting in lower energy consumption during long-term continuous operation. Furthermore, precise meshing clearance minimizes transmission stutter and power loss, ensuring uniform and stable power output-making the system ideal for 24-hour continuous operation.
• A sealed, explosion-proof design eliminates oil leakage issues. Engineered for the harsh operating conditions of heavy-duty equipment-characterized by heavy dust, intense vibration, and significant temperature fluctuations-the unit employs a multi-layered sealing structure. This incorporates imported, high-temperature and wear-resistant shaft seals alongside precision housing assembly, effectively resolving common problems such as oil seepage, leakage, and the ingress of dust or water during long-term operation. The housing features dedicated cooling air channels and a lubricating oil circulation system that rapidly dissipates heat, preventing lubricant degradation, component aging, and equipment downtime caused by heat buildup, thereby significantly reducing failure rates and maintenance costs.

 

 

Model	Industrial Gearbox
Input type	Flange, shaft
Output type	Solid shaft, hollow shaft, shrink disk, splined shaft, flange, etc
Optional	Fan, oil pump, oil tank, back stop, cooling systems, etc
Housing material	HT250
Gear material	Alloy steel
Warranty	12 month

 

 

For more types and sizes, please contact our sales staff.

 

 

 

 

 

 

 

 

 

 

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