Tooling and Checking Balls (Construction Balls)
ITI manufactures and stocks three standard types of Tooling Balls (Type 224 Tooling Balls, Type 448 Checking Balls, Type 348 Checking Balls), available singly or in any quantities, in diameters of 1/4″ through 1″ in 1/8″ increments. Balls and shanks are made of 440-C stainless steel hardened to 55-58 Rc, and are also available in tungsten carbide.
They are assembled by a propriety technique that retains the initial high precision and finish of the balls. The weld between ball and shank is made somewhat fragile so that the ball will drop off if subjected to an unusually heavy lateral force.
This prevents setup and inspection errors that might occur because of accidental bending of the shank. However, balls of special construction for withstanding heavy loads or shock are available on request. A variety of other configurations, materials, sizes and tolerances can be furnished on order.
Type 224 Tooling Balls
Ideal as permanent components of jigs and fixtures. Shank press fits into hole. Download the ITI Ball – Type 224 Tooling Ball diagram (PDF).
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Type 448 Checking Balls
Include reference shoulder for positive positioning and re-positioning (448-2 with tungsten carbide ball only). Download the ITI Ball – Type 448 Checking Ball diagram (PDF).
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Type 348 Checking Balls
Type 348 checking may be pulled into a hole or bushing from below without applying pressure on the ball (accomplished by using a cap screw in the tapped hole in the shank). Note: eccentricity, ball to shank, 1.0002 TIR max. Download the ITI Ball – Type 348 Checking Ball diagram (PDF).
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