Technical Blog

What is a Zero Backlash Gearbox?

A Zero Backlash Gearbox is part of our product portfolio at Heason.

Our Gearbox types consist of:

  • Planetary Gearboxes
  • Worm Gears
  • Zero Backlash Gearboxes

A Zero Backlash Gearbox is a very high precision reduction gearbox. They are very well suited to demanding applications and offer great torque to weight ratios. They are also well known for their high precision and high linearity.

What is Backlash?

Backlash is a term often used in automation, but the exact meaning can differ slightly from product to product.

When discussing gears, the backlash is the amount of space between two gears where the teeth meet. This gap is essential for gears to fit together without the risk of getting stuck. However, this gap can also cause significant motion loss, resulting in a gearbox with ‘play’ and positional errors.

Zero backlash gearboxes are manufactured in such a way that there is no reliance on conventional teeth to teeth contact and so this gap can be eliminated. The result is an efficient gearbox with no loss of movement when the direction is changed.

Benefits of Zero Backlash Gearboxes

The Zero Backlash Gearboxes Heason can offer have the following features and benefits:

Torque to Weight Ratio – our products have a remarkable torque to weight ratio when compared to other products on the market.

Titling Rigidity – We can offer increased tilt rigidity with integrated cross roller bearings on the output shaft. Meaning you can hang loads directly off our gearboxes. Our designs are robust and allow for customisation.

High-Precision Bearing – our zero backlash gearboxes are manufactured with very high precision – up to a few microns. They also have high stiffness making them excellent value for money.

High Linearity – our gearboxes offer high linearity of torsional characteristics.

Low Friction – we can offer a significant decrease in hysteresis due to our low friction designs.

Ready to use – our completely sealed products are ready to “plug and play”.

Zero Backlash Gearbox Applications

Zero backlash gearboxes can be used for various applications, including:

  • Robotics
  • Pan & tilt heads
  • Security applications
  • Machine tools
  • Testing & research
  • Medical

Zero Backlash Gearboxes from Heason

We have a wide range of Zero backlash gearboxes available on our website. We can also integrate zero backlash gearboxes with frameless motors to produce a bespoke rotary actuator solution.

For more information on our zero backlash gearboxes or for help with your application, please contact us at +44 (0) 1403 792 300 or email sales@heason.com.  

Article published on: 28/04/2022

Article last updated on: 28/04/2022