Shaft-mounted helical gear units off the shelf
RAPID availability is a major requirement in many industries when there is a machine breakdown, and nowhere more so than in the UK extractive industries where the belt-driven shaft-mounted helical gear unit is a popular gearbox choice.
Renold Gears’ SMXtra gear unit has long been regarded as a robust, reliable unit and ‘instant availability’ has now been added to the list of associated benefits.
Manufactured in the UK at the company’s factory in north Manchester, the SMXtra unit is available in 12 sizes in parallel bore with a complete range of bushes in 5mm increments from 20mm to 190mm.
A unique taper-lock securing and release system is also available and can be fitted on either side of the unit, making the SMXtra one of the easiest units on the market to fit and remove.
Being shaft mounted and secured with a torque arm rather than a base-mounted unit, the SMXtra allows trouble-free interchangeability with other, less-available ranges.
Renold say the new ‘off-the-shelf’ stock is available on preferred sizes and ratios in both parallel and taper-bore options for immediate despatch from their factory, or from strategic locations throughout the UK via the company’s distributor network.

