New compact, zero-backlash gearboxes and servo actuators

Heason is offering a range of compact, zero-backlash gearboxes and servo actuators that the company says punches well above its size, with 18Nm torque rating in a 50mm housing. These compact gearbox actuators extend the Spinea TwinSpin range to cover space-restricted precision positioning for high-torque loads.

Based on Spinea's TwinSpin 'bearing reducer' technology, the new ultra-compact, high-torque TS50 gearboxes and DS50 servo motor-driven rotary positioning actuators are packaged in nominal 50mm square housings and, with their heavy-duty radial/axial output bearings, deliver a rated torque output of 18Nm with a five-times overload capacity for short-term emergency conditions. With smooth, backlash-free performance suited to high-precision, positioning of heavy loads, the new miniature gearbox and actuator will satisfy demanding space-restricted and high-torque applications in the fields of robotics and automation.

How TwinSpin works

TwinSpin uses a patented trochoidal gear reduction principle, based on two eccentrically rotating planetary gears that mesh via precision needle rollers in an outer gear ring. The input shaft rotates the eccentric action of the planetary gearing, causing the outer ring to rotate in the same direction. With almost 50 per cent simultaneous gear meshing and with the input-to-output reduction determined by the ratio between planetary and ring gear teeth, the TwinSpin is able to transmit very high torque with backlash-free performance and high efficiency.

In addition, due to such a high-contact surface area and an integrally robust power transmission and bearing system, the TwinSpin bearing reducer can withstand up to five times overload torque under emergency stall conditions. Furthermore, the design boasts a very low input inertia and friction rating, allowing a fast servo system response to be achieved, with noise and vibration levels that are also suited to sensitive high-resolution positioning.

TS50 gearbox

For the new miniature TS50 gearbox, a standard internal 6mm diameter shaft with a keyway provides the input interface and the output is handled by a flange opposite the mounting face.

With a fixed 63:1 reduction ratio and overall length of 41mm, it is possible to offer a variety of different input-to-output mechanical configurations and alternative internal bearing systems to suit increased load handling, reduced friction, larger ambient temperature range and improved precision versions. The standard product is claimed to be protected to IP64.

S50 compact servo actuator

When built into the DS50 compact servo actuator, the gearbox is mounted to a high-performance AC servomotor with integral resolver feedback. The mechanical interface between the output shaft and the load may be customised to suit requirements. Brake options are available and motors may be fitted with a flying lead or connectors.

Alternative position feedback options - including external load-mounted rotary or linear encoder systems - are available from Heason Technology, who can also provide a wide range of drives and motion controls to complete the application.

Follow the link for more information about zero-backlash bearing reducers and gearboxes from Heason Technology.

Heason Technology Ltd

Motion Solutions Centre
Spring Copse Business Park
Slinfold
RH13 0SZ
UNITED KINGDOM

+44 (0)1403 792300

sales@heason.com

www.heason.com

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