Starrett 52080 Drop Indicator Spindle Square Steel

Product Description

The STARRETT 52080 is a drop indicator spindle square designed for use with vertical milling machines. This steel accessory mounts in a machine spindle and allows a dial indicator to be positioned for precise workpiece alignment and surface checking. The 0.38-inch shank diameter fits standard spindle bores found on vertical mills. With a graduation resolution of 0.001 inch, it supports the level of accuracy required for setup and inspection work in machine shop environments. Licensed machinists and toolroom technicians are the primary users of this accessory.

This spindle square is intended for use with vertical milling machines in production and job-shop settings. It serves as a setup tool when tramming a head, indicating a vise, or checking parallelism of a workpiece surface relative to the table travel. The 0.38-inch shank diameter suits the collet or spindle bore configurations common to knee mills and similar vertical machining equipment.

Key Features

• Steel construction for durability in machine shop environments
• 0.38-inch shank diameter fits standard vertical milling machine spindles
• 0.001-inch graduation resolution supports precision setup and inspection
• Accessory type: spindle square for drop indicator positioning
• Compatible application: vertical milling machines

Compatibility

Designed for use with vertical milling machines as stated by the manufacturer. Confirm spindle bore and collet size before installation to ensure a proper shank fit.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the milling machine before inserting or removing the spindle square from the spindle. Secure the shank firmly in the collet or spindle bore to prevent movement during indicator readings. Do not exceed the speed or load ratings of the milling machine spindle when this accessory is installed.