A rod end bearing, also called a heim joint (North. America) or rose joint (U.K. and elsewhere), is a mechanical articulating joint. Such joints are utilized on the ends of control rods, steering links, tie rods, or anywhere a precision articulating joint is needed. A ball swivel with an opening through which a bolt or other attaching hardware may pass is pressed into a circular casing with a threaded shaft attached. The threaded portion could be either female or male.
Rod Ends and Spherical rod end Bearings are generally used to reduce friction and to give better control in oscillating assemblies (back and forth). They also have the ability to misalign axially. This attributes allows designs of machinery to operate under conditions of oscillation, misalignment and load, with the reduction of friction, making the design and operation more efficient. Rod end bearings come in a variety of sizes and materials, from 1/8" to 4 ½" bore in imperial and 2mm to 200mm for metric, and male or female threads in right hand and left hand. Inch and metric rod ends are available with integral ball and roller bearings for higher rpm usage. Spherical rod end bearings come in many sizes too ½ " to 6" for imperial and 2mm to 2,000mm. Materials for both rod ends and plain spherical can be from mild steel to heat treated alloys and stainless steel. Custom sizes can be made to order as well.
Rod Ends and Rod End bearings originally used in aircraft, the rod end bearing may be found in cars, trucks, race cars, lawn tractors, boats, industrial machines, go-karts, radio-control helicopters, and many more applications.
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