A positioning bead is a load device consisting of a shell, a spring, a ball or a cylinder. Widely used in some medical equipment, lubrication equipment, pneumatic tools and other products. Engineers often use it in mold, jig, assembly and other work. The movement of the ball is promoted by a spring with a certain pressure, so that the equipment runs smoothly.

As a component that can provide pressure and accurate positioning, positioning beads have various fixing methods, generally including press-in type and thread locking type.
The screw thread has two locking methods: one-word groove and inner hexagon, and the press-in type has two kinds of shells: stainless steel and plastic. The column itself has long, short, and standard types to accommodate pressure and fix the body. There are two types of springs: light load and heavy load.
Balls are available in hardened steel or stainless steel, and synthetic materials nylon, Delrin (Delrin spring unit) or phenolic resin are also available. These materials provide high strength and durability with sufficient elasticity, and the specific use depends on the requirements of the stressed material

The positioning bead has a simple structure and provides completely different functions from the previous fasteners. However, it is not easy to manufacture products that fully meet the standards. The key points are the control of the pressure and the height of the ball. Suitable as a stop assembly or suitable for pointing, positioning, indexing, locking, latching, ejection, jacking and other similar push applications.

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