Planetary servo gearheads offer high efficiency with low backlash

Second Quarter 2004 Shaft power components

David Brown Engineering says that high efficiency, high torque capacity - and the lowest backlash in the industry - are offered by its Series P and E planetary in-line gearheads.

Designed to save space while providing quiet, accurate positioning performance, Series P and E planetary in-line gearheads are characterised by their tough, compact yet lightweight cube housings that incorporate precision bearings and precision-honed planetary gearing to deliver exact ratios from 3:1 through to 64:1.

Series P offers exact ratios from 3:1 through 40:1 with backlash less than 3 arc minutes, low noise as low as 58 dB(A), and an output torque up to 1,8 kNm. Exact ratios from 3:1 through to 64:1 are available with the Series E, along with backlash less than 8 arc minutes, low noise down to 55 dB(A), and an output torque up to 800 Nm.

For simple and rapid installation, an integrated input flange mounts directly onto the servomotor, while the hollow input shaft neatly accepts the motor shaft and clamps to provide zero backlash connection. Application engineers from David Brown can advise on specifying backlash, gear ratios and speeds, to aid in designing the ideal servo mechanical drive system for a specific application.

Permanently lubricated with synthetic grease at the factory and with lifetime-sealed housings delivering IP65 protection, both Series E and Series P units are maintenance free. The units are normally readily available, with standard ratios in stock, and a range of motor plates and bushings to fit different servomotors.

For more information contact David Brown Engineering, +27 (0) 11 748 0000, www.textronpt.com

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