Small gearboxes from FAULHABER

In many applications, it is useful or even necessary to mount a small gearbox between the motor and the point of power transfer. The high speed of the motor is converted to a lower speed on the application side through reduction. Using a gearhead, the available torque can be significantly increased and, at the same time, the movement more precisely controlled through the lower speed. The appropriate combination of motor and small gearbox opens countless possibilities for configuring the optimum drive for every application.

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With spur gearheads and planetary gearheads, FAULHABER offers two different types of small gearbox, each of which has special strengths. The range of sizes spans from diameters of 3 to 44 millimeters. The reduction ratios range from 3:1 to 983447:1. The gearhead components can be made of various materials for different purposes. A number of different lubricants are available, including special lubricants for extreme applications, such as in aerospace. All small gearboxes from FAULHABER are provided with lifetime lubrication. Relubrication is not necessary.

Gearheads consist of numerous moving parts. Flawless and precise function can only be achieved through highly accurate production. FAULHABER has the know-how and equipment to produce gearheads with the highest precision and the smallest backlash. This also applies for the assembly of motor-gearhead combinations. We can guarantee optimum results and therefore recommend that our customers have motor-gearhead combinations assembled by FAULHABER.

With planetary gearheads, the toothed planetary gears rotate around the centrally mounted sun gear. This “solar system” is enclosed by an internally geared housing. The size ratio of the wheels or, more specifically, their number of teeth determines the reduction ratio. A multi-stage design is possible here as well. Planetary gearheads are especially compact. They can also transfer especially high torques because there are multiple contact points between the gears on every stage. The distribution of the applied force over many contact points makes this type of small gearbox very robust and enables a long service life.

A spur gearhead is designed like a clockwork. The first gear (pinion) is mounted directly on the motor shaft. The reduction is achieved by alternating between small and large gears. Two gears always form a stage here. The more stages a gearhead has, the greater the reduction. Per stage, spur gearheads have only one contact point with correspondingly low friction. This results in a very high efficiency and a low noise level.

Zero-backlash spur gearheads

FAULHABER also offers spur gearheads in a zero backlash variant. The backlash is reduced to a minimum here during assembly. This is achieved by means of preloading, which is set by rotating the gear trains in opposite directions and then bracing them on the motor pinion. Zero backlash gearheads are ideal for positioning tasks with high accuracy and low torque.