Linear bearings are a high-precision, low-cost, and low friction linear motion system.
Linear bearings are used in combination with guide shafts to achieve infinite linear motion through the rolling motion of balls in a linear motion system.
Linear bearing structure
Working process of linear bearings
A linear bearing is equipped with a steel ball cage inside the outer ring, which contains multiple rolling balls that move in an infinite cycle. The two ends of the cage are fixed with sealing gaskets and retaining rings, and there are notch windows in the straight track direction where each steel ball works under force. This part allows the loaded steel ball to make rolling contact with the shaft and move relatively with a very low coefficient of friction.
Therefore, linear ball bearings are the most suitable bearings for mechanical equipment, automation equipment, energy-saving equipment, and other applications.
Classification of Linear Bearings
1. Classified by material:
Shell: stainless steel, bearing steel, aluminum alloy (with seat linear bearing);
Retainers: made of resin, stainless steel, and bearing steel;
Surface treatment: chrome plating, nickel plating, surface anodizing (for external fixed seats of linear bearings), etc.