The roller operates with the drive components away from the conveyor area, reducing the contamination that may degrade the drive performance. Its steel tube measures 1.9 in. in diameter and uses standard O-rings and standard multirib belts. And its sealed precision bearings can handle relatively high speeds, says the manufacturer.

Interroll Corp., 3000 Corporate Dr., Wilmington, NC 28405, (800) 830-9680,