Precision Brand 25203 Arbor Shim 1 in Id 1-1/2 in Od Steel

Product Description

The PRECISION BRAND 25203 is a round arbor shim manufactured from 1008/1010 carbon steel with a plain finish. Arbor shims are precision-ground spacers used to control axial positioning and eliminate runout on arbors, spindles, and shafts. This shim features a 1 inch inside diameter and a 1-1/2 inch outside diameter, with an exceptionally tight thickness tolerance of -0.0002 to 0.0002 inches. That level of precision makes it suitable for applications where accurate spacing is critical to machine performance. Machinists, maintenance technicians, and millwrights install these shims in machine tools, saw arbors, and rotating equipment assemblies.

This arbor shim is used in industrial and light manufacturing environments where precise shaft and arbor spacing is required. Common applications include circular saw arbors, milling machine spindles, and other rotating equipment where controlling axial play or spacing between components is necessary. The plain steel finish is appropriate for dry or lightly oiled environments. Each package contains 10 shims, making this suitable for both single-job repairs and ongoing maintenance stock.

Key Features

• 1008/1010 carbon steel construction provides reliable strength for general-purpose shimming applications
• Tight thickness tolerance of -0.0002 to 0.0002 inches supports precision axial positioning
• Inside diameter tolerance of 0.000 to 0.011 inches for consistent arbor fit
• Outside diameter tolerance of -0.002 to 0.002 inches for controlled shoulder fit
• Plain finish compatible with dry and lightly lubricated assemblies
• Inch system of measurement; package contains 10 shims per unit

Compatibility

Designed as a general-purpose arbor shim for rotating equipment, machine tool spindles, and shaft assemblies requiring a 1 inch bore and 1-1/2 inch outside diameter.

Installation Notes

Arbor shims are typically installed by machinists or maintenance technicians during equipment setup or repair. Always power down and lock out the machine before disassembling any spindle or arbor assembly. Verify shim stack thickness with a calibrated micrometer before final assembly. Handle shims with clean, dry hands or gloves to prevent corrosion on the plain steel surface.