The new PE helical gearboxes from Stober Drives Inc., Maysville, Ky., handle more torque, generate less noise, and provide smoother motion than spur-gear units. The units come in four case sizes ranging from PE2 to PE5, and can have single or double stages with ratios from 3:1 to 100:1. Output torques range up to 310 Nm and inputs speed can be as high as 8,000 rpm. Backlash ratings are as low as 8 arc minutes.

The units can be ordered as in-line gear units with a motor adapter for third-party motors, a laremotor inut shaft option, or an integrated housing that mounts to the most popular motor dimensions. The gearboxes are said to have low friction levels and high shaft-load capacities, making them well suited for a variety of applications, including packaging and general automation.