In the Amacoil/Uhing linear drive, the rolling ring bearings are specially machined to create a dynamic surface on the inner race. This surface is in continuous point-contact with the shaft. When the shaft rotates there is absolutely no play and no backlash – even during reversal.
In a rolling ring linear drive system, the shaft is smooth – there are no threads. The smooth surface remains clean and clog-free because dirt and debris have nowhere to collect. No shaft cleaning means less downtime – better production rates.
The Amacoil/Uhing linear drive is a non-positive drive. The shaft is smooth and threadless which provides built-in overload protection. Unlike screw-based set-ups, the nut in a Uhing system will slip – not jam – in the event of overload. This protects other system components from the churning and grinding that often happens with screw-based systems. No jams also means reduced downtime for repairs which enhances continuous production rates.
Each RS linear drive model is available in five, fixed pitch (linear distance traveled per one shaft revolution) settings for improved flexibility in meeting linear motion system pitch requirements.
An optional free-movement lever allows the drive unit to be manually pushed to any position on the shaft. There is less wear and tear on the drive motor and system components because it is not necessary to jog the drive unit into position.
For light, uniform loads, there is no need to use linear bearings, slide mechanisms or other load carrying devices. Payloads may be attached directly to the “nut.” For heavier or overhung loads, Amacoil can provide an optional linear slide load carrier.
Rolling ring drives require very little maintenance. If a Uhing drive is properly sized for an application, periodic light lubrication of the shaft is the only maintenance needed.
A wide range of RS linear drive sizes accommodate varying payloads and axial thrust requirements.