Transmek H & B Series heavy duty helical bevel gear units are engineered for demanding industrial applications requiring high torque transmission, reliable operation and long service life. The series includes parallel shaft helical gear units (H Series) and right angle bevel-helical gear units (B Series), providing flexible solutions for conveyors, mining equipment, cement plants, steel machinery and other heavy-duty drive systems.
Designed with a modular structure, robust housing and hardened gear transmission technology, H & B industrial gear reducers deliver high load capacity, low vibration and stable performance under continuous operating conditions. Multiple mounting configurations, output shaft options and customized gear ratios allow the gear units to be adapted to different machine layouts and operating requirements.
Transmek provides complete industrial gearbox solutions including gearbox selection support, motor adaptors, electric motors, couplings, cooling systems and customized drive assemblies. Our H & B Series gear units are widely used as reliable alternatives to traditional European industrial gearboxes for global OEMs, distributors and machinery manufacturers.
H & B Series Industrial Gear Unit Structure
# Main Components of Industrial Helical Bevel Gear Units
1. Gearbox Housing
- Heavy-duty cast iron housing
- Fabricated steel welded housing for higher torque applications
- Optimized housing design for strength, rigidity and vibration resistance
2. Gear Transmission System
H Series – Parallel Shaft Gear Units
- Multi-stage helical gear transmission
- High efficiency power transmission
- Suitable for high torque conveyor and industrial applications
B Series – Right Angle Bevel Helical Gear Units
- Combination of helical gears and spiral bevel gears
- Compact right-angle transmission design
- Suitable for space-limited industrial installations
3. Input Configurations
Available input options:
- Keyed solid shaft input
- IEC motor flange adaptor
- Customized input design
4. Output Configurations
Flexible output solutions:
- Single solid shaft output
- Double solid shaft output
- Hollow shaft with keyway
- Splined hollow shaft output
- Hollow shaft with shrink disc
- Hollow shaft with mounting flange
Features:
# Core Features of H & B Series Modular Gear Reducers
1. Highly modular design, modular and combinable spare parts, short delivery time
2. Sturdy cast iron or steel welding gear box, hardened and wearable gears all contributing to high quality and performance
3. High power, high reliability
4. Variety of output options: single or double solid output shaft, hollow output shaft with keyway, spline, shrink disc and flange
5. Multiple mounting options
6. Wide range of gear ratio and output torque
7. Optional accessories
Parameters:
| H Series | Ratio | B Series | Ratio |
| H1 (1 Stage) | 1.25~5.6 | – | – |
| H2 (2 Stage) | 6.3~28 | B2 (2 Stage) | 5~18 |
| H3 (3 Stage) | 22.4~112 | B3 (3 Stage) | 12.5~90 |
| H4 (4 Stage) | 100~450 | B4 (4 Stage) | 80~400 |
Custom gear ratio and high torque output gear units available for different heavy load industrial drive requirements.
Installation:
# Multiple Installation Methods of Helical Bevel Reducer
1. Foot Mounted
2. Flange Mounted
3. Shaft Mounted
Lubrication:
# Gearbox Lubrication System Options
Oil Dip and Splash Lubrication (Additional Compensation Oil Tank)
Forced Lubrication (Additional Oil Pump)
Cooling & Lubrication Options
# Natural & Auxiliary Cooling Mode for Gear Units
Gearbox Lubrication System
Different lubrication solutions are available according to gearbox size, speed and operating conditions:
Oil Splash Lubrication
Suitable for standard industrial applications.
Forced Lubrication System
Available with:
- Oil pump
- Oil filter
- Cooling system
- Additional compensation oil tank
Cooling Methods
Available cooling options:
- Natural cooling
- Cooling fan
- Cooling coil
- Auxiliary cooling system
Industry Application：
Mining Industry
- Belt conveyors
- Crushers
- Material handling systems
Cement Industry
- Mixing equipment
- Rotary machinery
- Bulk handling systems
Steel & Metallurgy
- Rolling mills
- Heavy transmission equipment
Logistics & Material Handling
- Conveyor systems
- Automated warehouse equipment
Widely applicable for heavy industrial transmission fields: mining belt conveyor, stone crusher, cement mixing plant, metallurgical rolling mill, grain silo conveyor, port bulk handling equipment, wastewater treatment machinery, construction machinery, chemical mixing agitator, wood processing machinery, packaging heavy conveying lines.
Brand & Factory Advantage：
Transmek is a professional Chinese manufacturer of H/B series helical bevel gear units. We support OEM & ODM non-standard customization for global industrial buyers. Strict ISO production standard, full production inspection before shipment, complete test report for each gearbox. Stable supply capacity, flexible MOQ, professional overseas technical support and after-sales service for Europe, Middle East, Southeast Asia, Africa mining & construction clients.
Competitive Edge：
Our H&B modular gear units provide a reliable alternative solution for imported heavy-duty gearboxes. Compared with similar gear reducers, our gear units feature lower cost, shorter lead time, same transmission efficiency and load capacity. All gears adopt carburizing quenching heat treatment, strong wear resistance and long service life under continuous heavy-load operation. Low vibration, low running noise to meet 24-hour uninterrupted working conditions.
Packing & Shipping：
Standard export wooden case packaging with anti-rust oil inside to avoid rust during long sea transportation. We support sea freight, air freight and door-to-door delivery. Complete export documents including commercial invoice, packing list, CE certificate for customs clearance in UAE, Pakistan, Chile, Peru, South Africa and other countries.
Our IEC standard motor flange adaptor can perfectly match three-phase asynchronous motors, servo motors, explosion-proof motors for complete drive system assembly.
Frequently Asked Questions
Q1: What is the difference between H series and B series gear units?
H series uses parallel shaft helical gear transmission, while B series combines helical gears and spiral bevel gears for right-angle output.
Q2: Can Transmek supply complete gearbox drive packages?
Yes. We can supply gearbox, motor adaptor, motor, coupling, cooling system and baseplate as a complete drive solution.
Q3: Are customized gear units available?
Yes. Customized ratio, mounting design, shaft configuration and torque requirements can be developed according to application conditions.
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