Amacoil's Uhing linear drives are available with a combination shaft scraper/grease fitting option
Amacoil's Uhing linear drives are available with a combination shaft scraper/grease fitting option. The addition is engineered to remove excessive grease, dust and dirt from the shaft while the drive is running and assure adequate shaft lubrication. As debris accumulates at either end of the shaft, it can be wiped away with a cloth. In most applications, the shaft scrapers may be used without the grease fittings to clean the shaft while the drive runs. The grease fitting combination is recommended, however, in heavy usage applications and also when shaft RPMs exceed rated speeds.
The shaft scraper is a rubber O-ring that is mounted in a Delrin brand plastic fitting. One shaft scraper is attached to each of the end bushings on the drive unit. When equipped with the grease fitting, the plastic fitting is made larger to accommodate the addition of a felt wiper ring that is designed to wick oil out of the grease and apply a thin oil film to the shaft as the drive runs.