Truncated Ball with Counter Bored Hole

Made from Hardened Stainless Steel with an Extended Glue Line.

The truncated and counterbored ball is the second most widely used kinematic component. It is used where the component must be held in place from the front side. Three of these balls provide a very high-quality substitute for a conical cup or a trihedral clamp. These balls are a good choice for the three spherical contact points in the kinematic system when the ball can only be held in place from the front side. This component has a much lower profile than a complete ball.

This component has a .005″ deep recess on the flat surface that is made very rough by Electrical Discharge Machining. When maximum reliability is required, glue may be applied to this rough surface to form a permanent bond between this component, the machine screw, and the mounting surface. This component is machined for use with a standard socket head cap screw. The “A” diameter is the outside diameter of the ball. The “B” height is the height of the ball, before the counter bored section of the ball was machined. The “C” diameter is the diameter of the landing area on the bottom of the ball. The “E” diameter is the diameter of the through hole. The “F” diameter is the diameter of the counter bored hole. The “G” depth is the depth of the counter bored hole. The “H” diameter is the diameter of the recessed area on the bottom of the ball.