Gibraltar 826808-G Shoulder Tooling Ball 6mm Press-fit

Product Description

The GIBRALTAR 826808-G is a shoulder-style inspection tooling ball designed for precision measurement and fixturing applications in machine shops and manufacturing environments. It features a 6 mm ball diameter on a 3 mm press-fit shank, with the ball center positioned 6 mm from the shoulder bottom and 12 mm from the shank bottom. The steel construction is heat-treated for durability and wear resistance. This tooling ball is installed by machinists, toolmakers, and metrology technicians who require repeatable datum reference points on fixtures, jigs, and coordinate measuring machine (CMM) setups.

This part is used in precision inspection and fixturing setups where a hard, accurate reference point is required. The shoulder design allows the ball to seat flush against a surface, providing a consistent and repeatable datum. Typical applications include CMM fixture building, jig boring setups, and machine tool alignment in both prototype and production environments. The press-fit shank attachment allows installation into a drilled and reamed hole without threading.

Key Features

• 6 mm ball diameter with heat-treated steel construction for long-term dimensional stability
• 3 mm press-fit shank for secure, tool-free installation into a reamed hole
• Shoulder design seats the ball at a fixed 6 mm center-to-shoulder distance for repeatable positioning
• Ball and shank concentricity held to 0.0002 inches for high-accuracy inspection use
• Shank tolerance of +0.0003 / -0.0000 inches ensures a controlled press fit
• No tapped shank and no breakaway feature — fixed, permanent installation style

Compatibility

Designed as an OEM-style replacement or new-installation component for precision fixturing and inspection setups requiring a 3 mm press-fit shank tooling ball with a shoulder datum reference.

Installation Notes

Installation is performed by machinists or toolmakers using a press or arbor press to seat the shank into a precision-reamed hole. The receiving hole should be reamed to the shank tolerance specification to achieve proper fit. Ensure the hole is clean and free of debris before pressing the ball in place. Once pressed, the tooling ball is intended as a permanent installation and should not be driven out and reused, as this may affect concentricity.