Te-co 50202 Ball Bearing Parallel 12in 2.5in Width 36 Balls

Product Description

The TE-CO 50202 is a ball bearing parallel designed for precision workholding setups in machining and tool room applications. The unit measures 12 inches in length and 0.25 inches thick, with 36 hardened balls seated along the plate to provide consistent, repeatable contact across a workpiece surface. The black oxide finish offers basic corrosion resistance and reduces light glare during layout work. Licensed machinists, toolmakers, and machine shop technicians use these parallels to elevate and position workpieces in milling vises and surface grinders where flatness and parallelism are critical.

Ball bearing parallels are standard toolroom equipment in job shops, production machine shops, and maintenance facilities. The 50202 is suited for use in precision milling vise setups where conventional solid parallels may rock on a rough or uneven workpiece surface. The rolling ball contact self-adjusts to irregular surfaces, helping technicians achieve solid, stable support without shimming. Typical applications include setup on vertical milling machines, horizontal mills, and surface grinders where workpiece seating must be confirmed before cutting.

Key Features

• 36 ball-bearing contact points self-adjust to irregular or rough workpiece surfaces
• 12 inches length accommodates a wide range of vise and workholding setups
• 0.25 inches plate thickness suits tight clearance applications inside standard milling vises
• 3/8 inch ball diameter provides stable, distributed contact across the workpiece
• 2.5 inches plate width gives broad lateral support for tall or heavy workpieces
• Black oxide finish reduces corrosion and minimizes glare during precision layout

Compatibility

Designed as an OEM-style toolroom parallel for use in standard milling vises, surface grinder setups, and general precision workholding applications requiring self-adjusting ball contact support.

Installation Notes

Ball bearing parallels are installed and removed by hand as part of a standard vise setup procedure. No fasteners or tools are required for placement. Keep parallel surfaces clean and free of chips before seating a workpiece, as debris under the balls will affect flatness. Inspect ball retention periodically and remove from service if any balls are missing or seized.