Shaft collars are mostly used for industrial applications, especially in power transmission devices, gearboxes, and heavy-duty motors. Many features make shaft collars an indispensable component, but a unique quality is its simple design and easy installation. Even situations that require disassembly of equipment and its parts can be avoided by installing shaft collars as they are versatile. However, buying a shaft collar is not as easy as installing it, and there is a lot one must take into account – and this guide will help buyers make the right purchase.
Difference Between Set-Screw & Clamp-On Shaft Collars
There are mainly two types of shaft collars – set-screw and clamp-on/clamping collars, and the former is an earlier version while the latter is relatively new. The holding power of a set-screw comes by securely attaching it to the shaft, but since the shaft is stiffer than the screw-set, it significantly impairs the shaft’s quality – resulting in a malfunction. On the other hand, clamp-on shaft collars do not damage the shaft and have an improved design, eliminating all technical issues that a set-screw may cause. However, if the shaft is soft, a screw-set will work fine.
Select a Good Material
When it comes to shaft collars, the material used in its construction can significantly affect its holding power and performance in general. The common choices include stainless steel, metal/steel, and aluminium. Although all three are excellent choices, aluminium and stainless-steel shaft collars are more lightweight but do not have the highest holding power. Similarly, while metal and steel are comparatively high-strength, they are heavier. But undoubtedly, the holding power takes priority over the weight of the shaft collar. Buyers can also go with shaft collars with a surface coating like zinc or black oxide for corrosion resistance.
Other Things to Consider
Buyers must select a shaft collar’s size after careful consideration and measurements, especially if going with a set-screw. However, it is also vital to remember that the size has nothing to do with the shaft collar’s strength. A 360-degree clamping force and socket-head cap screws are essential in a clamp-on shaft collar. No matter which type of shaft collar you choose, it should be effective on both - hard and soft shafts and have a good operating temperature range.
Categories Simillar to Shaft Collars includes Rigid Couplings, Universal Joints