What are the different types of shaft collars?
Set Screw Collar The set-screw collar is the most common and most economical shaft collar. As the name indicates, the collar holds onto the shaft via a set screw that presses into the shaft. This penetration of the point screw into the shaft provides most of the holding power though friction between the shaft and the collar also contributes slightly. The economy of set-screw collars is offset by some disadvantages. One, the set-screw mars the shaft. Two, the set-screw collar provides less holding power than a clamping collar. Three, it is much less effective on a shaft that is harder than the set screw because the screw can make little or no penetration into shaft. Set-screws are available with knurled points, which make a deeper penetration into the shaft and offer greater holding power. Additionally, a second set screw, usually spaced 90 to 120 degrees apart from the first screw, can greatly increase the holding power. One-Piece Clamping Collars The one-piece clamping collar has a ta
