Cylindrical Inspection Bar

Cylindrical Inspection Bar

(Also known as:Precision Test Mandrel,Machine Tool Alignment Bar,Cylindrical Metrology Gauge)

Product Overview

The Cylindrical Inspection Bar is a high-precision metrology instrument designed for verifying geometric accuracy,alignment,and dimensional tolerances in cylindrical components and machine tool systems.It serves critical roles in quality control,equipment calibration,and preventive maintenance across manufacturing sectors.

Key Features&Technical Specifications

1.Material&Construction

Core Materials:

GCr15 Bearing Steel(HRC62±1 hardness)1

Carbide-Tipped Options(For extreme wear resistance)

Invar Alloy(Low thermal expansion:ΔL≤0.3μm/°C)1

Surface Treatment:

Cryogenic stabilization(-196°C for 24 hours)1

Diamond-ground finish(Ra≤0.05μm mirror polish)1

2.Dimensional Accuracy

Straightness:≤0.002mm/m(AA Grade)1

Roundness:≤0.5μm 1

Radial Runout:≤0.003mm at gauge line 1

3.Functional Capabilities

Taper Inspection:Validates Morse/ISO tapers(MT1-MT6)with≥90%contact ratio(Prussian blue test)1

Alignment Verification:Checks spindle concentricity,axial movement,and parallelism 1

Modular Design:Extendable lengths(150–600mm)for deep bore measurements 1

Applications

Machine Tools:Spindle taper wear analysis,CNC alignment 1

Aerospace:Turbine shaft concentricity validation

Automotive:Engine cylinder bore inspection 2

Metrology Labs:Reference artifact for CMM calibration

Operational Guidelines

Preparation:

Clean surfaces with anhydrous alcohol;thermally stabilize in measurement environment(4+hours)1

Measurement:

Use with 0.1μm-resolution dial indicators or laser probes 1

Maintenance:

Store vertically in climate-controlled cases(20±2°C);annual recertification recommended 1

Industry Standards&Compliance

VDI/DGQ 3441(Class AA)1

ISO 230-1(Machine tool testing)1

Traceability:NIST-certified calibration reports available