Metric Inspection Bar

Metric inspection bars are essential tools in machine tool manufacturing and repair.They are used for precision checks of machine tool guides and worktables,geometric accuracy measurements,component inspections,scraping process operations,and assessing radial runout,axial runout,coaxiality,parallelism of components,and their parallelism with guides.Made from tool steel through heat treatment and precision machining,these bars feature high structural rigidity and can be hollow for weight reduction.They are designed with disassembly threads and hanging holes for easy handling and storage.Standard measuring length is 500mm with a taper ratio of 1:20;non-standard sizes are available upon request.

Key Applications:

Spindle Accuracy Testing:Radial runout,axial play,and coaxiality.

Guide and Worktable Calibration:Parallelism and perpendicularity measurements.

Machining Assistance:Workpiece clamping and scribing positioning.

Main Types:

Cylindrical Inspection Bars(Metric Straight Bars):For concentricity checks,commonly sized fromφ25×300mm toφ80×1500mm.

Taper Shank Inspection Bars(e.g.,Morse,BT,7:24 Tapers):For spindle taper hole mating tests.

Hollow Inspection Bars:Lightweight design for ease of operation.

These bars serve as fundamental references for machine tool calibration,ensuring precision in manufacturing and maintenance processes.

Specification: 100 * 150 * 30~700 * 1000 * 65 (millimeters) Accuracy: Level 0, Level 1, Level 2, Level 3.