Gearmotors – find manufacturers and suppliers

Gear motors are a type of hydraulic motor that uses fluid pressure to generate a rotary motion.

They are often used in mobile machines, industrial plants and construction equipment as they are compact, robust and powerful.

Below you will find the structure and function of gear motors, an overview of types, their areas of application and their advantages:

Structure of gear motors:

A typical gear motor consists of the following components:

1. The housing contains the gears and provides a sealed and safe working environment.
2. The gears are usually made of hardened steel or other wear-resistant materials.
3. The inlet and outlet connections are used to supply and drain the hydraulic fluid.
4. The seals and bearings prevent leaks and reduce friction.

How gear motors work:

A gear motor converts hydraulic energy into mechanical rotary motion. The mode of operation can be divided into the following steps:

1. A hydraulic system pumps oil or another hydraulic fluid into the motor under high pressure.
2. The fluid flows between two meshing gear wheels, which are set in motion as a result.
3. One gear wheel is attached to the drive shaft and transmits the rotary motion.
4. The speed and torque depend on the volume flow (flow rate of the hydraulic fluid) and the pressure.
5. After passing through the motor, the fluid is returned to the hydraulic circuit.

Types of gear motors:

There are different types of gear motors depending on their design and area of application:

1. Externally toothed gear motors:
   In this design, two equally sized gears mesh together.
   They have a simple design and make high speeds possible.
   Application: Mobile hydraulics, conveyor systems.
2. Internally toothed gear motors:
   Here, an internally toothed gear and an externally toothed gear work together.
   This design enables a more compact construction and is quieter in operation.
   Application: Precision hydraulics, machine tools.

Use of gear motors:

Hydraulic gear motors are used in numerous applications, including:

1. Construction machinery and vehicles:
Used to drive excavators, wheel loaders and cranes.
Used in hydrostatic drives for tractors and tanks.

2. Shipping and offshore technology:
In winch and anchor systems in ships.
Drive for underwater robots and drilling rigs.

3. Agriculture:
To drive mowers, plows and conveyor systems.
Used in modern harvesting machines.

4. Industry and mechanical engineering:
As a drive for conveyor belts, presses and robots.
Used in injection molding machines and CNC machines.

5. oil and gas industry:
As drives for pumps in drilling operations and on drilling platforms.

Advantages of gear motors:

• Space-saving and easy to install.
• Provides a lot of power despite their small size.
• Resistant to dirt, water and high temperatures.
• Ideal for applications that require smooth movement.
• Small number of moving parts reduces wear.

Hydraulic gear motors are a proven solution for powerful, compact and robust drives in many industries. They offer high reliability and efficiency, especially in mobile and heavy machinery. However, torque, efficiency and susceptibility to contamination should be taken into account when selecting a suitable motor.

Here are the most important aspects to look out for when buying gear motors:

The purchase of gear motors requires a detailed analysis of various technical, economic and logistical factors.

• Carefully determine the technical requirements necessary for the intended use:
• Determine the required torque (Nm) to ensure that the desired load can be moved.
• Select a motor that delivers the required speed (rpm).
• The motor must be compatible with the pressure range of your hydraulic system.
• Pay attention to the efficiency of the motor to reduce energy losses
• Depending on the application, motors with external or internal gearing are suitable.
• The space available at the intended installation location determines the size and weight.
• Note the shaft design such as cylindrical, splined or hollow shaft to match the intended coupling.
• The housing material should be selected according to the application: Aluminium for light applications, steel for heavy applications and galvanized or stainless steel models for outdoor use.
• The material of the gears also determines the service life of the motor. Choose hardened steel for durability and efficiency.
• High-quality components such as seals & bearings to reduce wear.
• Observe certifications & standards such as ISO 9001 for internal quality management. DIN EN 13463 as a standard for explosion protection in hydraulic applications or ATEX certification for potentially explosive atmospheres
• CE marking as a seal of compliance with European safety standards.
• Note the IP protection classes for dust and water resistance (e.g. IP65 or IP67)
• What operating conditions (-40 °C to +80 °C) is the motor suitable for?
• Don't just choose the cheapest price, but also consider quality and service life.
• Compare offers from several manufacturers.
• Consider the ease of maintenance and repair costs as well as the availability of spare parts.
• Factor in transportation costs and customs duties for international deliveries.
• Check the warranty conditions and whether the supplier can offer advice or maintenance services.

A well-founded selection can ensure that the gear motor is efficient, durable and economical.

Gear motors can be purchased from various suppliers. Comprehensive information about manufacturers and suppliers of Gear motors from all over the world can be found on Exportpages.