Helical Gear Units and Bevel-Helical Gear Units are two essential industrial gearbox types, widely used in power transmission systems to adjust speed and torque while ensuring smooth, reliable operation. While sharing core advantages like high efficiency and low noise, they differ in shaft configuration, making them suitable for distinct industrial scenarios. Together, they cover a broad range of applications, from light-duty machinery to heavy industrial equipment, backed by advanced gear design and precision manufacturing[2

Helical Gear Units feature cylindrical gears with angled teeth, designed for parallel-shaft power transmission[

Bevel-Helical Gear Units combine the advantages of helical and bevel gears, integrating helical teeth on conical surfaces to transmit power between intersecting shafts, typically at 90 degrees[1

Both gear unit types are constructed with premium materials and torsionally robust housings, ensuring durability and resistance to harsh industrial conditions[5[6]]

Common applications span mining, chemical, food and beverage, water treatment, and automotive industries[6[7]]. Helical units excel in pa

Over 1,000,000 versions, but only one original

The FLENDER® helical and bevel-helical gear unit portfolio is by far the most comprehensive range of industrial gear units in the world. It includes a multifaceted range of universal gear units, application-specific gear units and customer-specific solutions.

Price, performance and reliability – the universal gear unit solution

Today, our industrial gear units are especially valued by our customers due to their high level of availability, their quality and their attractive price-performance ratio. Our selection of universal gear unit designs is perfectly supplemented by a wide range of standard options such as motor bell housings, backstops and taconite seals. For this reason, our portfolio provides a virtually unlimited variety of design options. The gear units’ compact design, the choice between horizontal and vertical installation, the various mounting types (base- or shaft-mounted gear units) and the simple attachment of auxiliary components provide you with maximum flexibility when designing your plant.

Diversity and flexibility – the application solutions

With its range of helical gear units, Flender now has by far the largest number of application-specific solutions and is thus able to meet almost any drive technology requirements in hundreds of industrial and raw material extraction applications.

Your benefits at a glance

• Highest level of reliability and fail-safe operation
• Huge modular system for the optimal gear unit solution
• High efficiencies
• Rapid worldwide availability
• Comprehensive accessory program
• Five output shaft versions for easy connection to the work machine
• Available as an individual gear unit or an Integrated Drive System

Established as the industrial standard, in use worldwide

• Mining and Cement: conveyor belts, bucket elevators, crushers
• Cranes: hoists, trolleys, container cranes
• Power Generation: cooling towers, water turbines, hydrodynamic screws
• Plastics and Rubber: single-screw extruders
• Pulp and Paper: paper machines
• Water and Wastewater: aerators
• Food and Beverage: agitators, aerators

Did you know?

Our FLENDER helical gear units already deliver maximum performance in more than 400,000 drive tasks every day. They resist load reliably and ensure high plant availability.