Amacoil (Aston, PA) offers Uhing Model RG linear drives with a manual pitch control that permits a 10:1 adjustment of the linear pitch of the drive unit. Each of the 17 drive units has a specific maximum linear pitch — the linear distance the drive will move on the shaft per one revolution of the shaft. The pitch control lets users turn the pitch down in 0.01 increments across 100 discrete settings.
In applications where it is desirable or necessary to keep the drive motor running at a constant speed, the adjustable pitch feature enables a variable speed drive system without requiring changes or adjustments to the drive motor speed. If greater linear speed changes are needed, then the drive motor speed may be increased or decreased without affecting the linear pitch of the drive. Once the pitch of the drive is set, it will remain the same regardless of the drive motor speed. The pitch will change only if the operator adjusts the pitch control.
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