Crescent helical gear units are fully metric and are suitable for most application in both horizontal and vertical drives.

Based on a modular design and construction, the high degree of interchangeability of parts and sub-assemblies among all variants effects considerable economies of production, whilst maintaining the highest standard of component and unit elements. A wide choice of ratio is available based or recommendations laid down in AGMA standards with additional half ration steps.

Profile ground helical gears together with spiral bevel gears lapped in pairs, ensure high standards of accuracy, surface finish and quiet running characteristic. Helical gears are fitted in parallel shaft units whilst units with shaft at right angle incorporate spiral bevel and helical gears. High quality alloy case hardening material provide long life wear resistance and fatigue strength

The high power to weight ratio of all units combines with low volume to enable installation in the most difficult situations. Each of the two variants contains unique features suited to their own operating conditions.

Horizontal units feature optional right or left hand shaft arrangements from the same sub-assemblies and are available as foot mounted shaft mounted or foot/shaft mounted types.

Vertical unit are available in three versions: Standard units, heavy duly stirrer types and cooling tower drives.