Precision Brand 25998 Steel Arbor Shim Set 150 Piece

Product Description

The PRECISION BRAND 25998 is a 150-piece assortment of steel arbor shims designed to provide precise spacing and alignment on arbors, mandrels, and rotating shafts. Arbor shims are thin, flat washers used to take up axial clearance, adjust tool positioning, or achieve accurate spacing between components on a machine spindle. This set covers outside diameters from 5/8 inch to 1-3/8 inch, giving technicians and machinists a range of sizes in a single kit. The shims are manufactured from steel, providing the rigidity and durability needed in production and maintenance environments. Machinists, maintenance technicians, and tool-room professionals are the primary users of this type of shim assortment.

This assortment is suited for machine shop and industrial maintenance applications where precise axial positioning of saw blades, grinding wheels, cutters, or other tooling on an arbor is required. The range of outside diameters from 5/8 inch to 1-3/8 inch covers a broad selection of common arbor and spindle sizes found in both light production and general-purpose shop equipment. Having multiple pieces on hand reduces downtime when fine-tuning tool stack-ups or replacing worn shims during scheduled maintenance.

Key Features

• 150-piece assortment provides a wide selection of shim sizes in one kit
• Steel construction offers rigidity and durability under rotational loads
• Outside diameter range of 5/8 inch to 1-3/8 inch covers common arbor and spindle sizes
• Inch-system dimensions for straightforward fitment on standard tooling
• Single-package quantity — full 150-piece set ships as one unit

Compatibility

Designed as OEM-style replacement arbor shims for use on standard inch-dimension arbors and mandrels; verify inside diameter, outside diameter, and thickness requirements against your specific spindle or tooling specification before installation.

Installation Notes

Arbor shims are typically installed by machinists or maintenance technicians during tooling setup or spindle service. Always power down and lock out the machine before removing or installing shims on any spindle or arbor. Confirm that the shim inside diameter, outside diameter, and thickness match the arbor and tooling stack requirements before assembly. Follow the machine manufacturer's recommended procedure for torquing arbor nuts and securing tooling after shimming.