TAC Rockford Steep Taper 50 Spindle Runout Test Arbor
The TAC Rockford 465.950.000.000 is a high-precision calibration gauge designed for measuring spindle runout on CNC machinery. This Steep Taper 50 (CAT50) test arbor is an essential tool for maintenance professionals and machine operators who need to verify the alignment and accuracy of their machine spindles.
By ensuring your spindle is running true, you significantly extend tool life, improve surface finish quality, and prevent costly damage to high-end cutting tools and spindle bearings.
Key Performance Features
Ultra-High Precision: Features a maximum runout error of just 0.003mm (3 microns), allowing for extremely fine detection of spindle misalignment.
Superior Cylindricity: Holds a tolerance of 0.002mm (2 microns), ensuring that measurements taken along the 300mm length are consistent and reliable.
Standard Compliance: Built to ASME B5.50 standards, ensuring compatibility with CAT50/ANSI steep taper spindles.
Robust Design: Engineered for repeatability, this arbor allows for quick “go/no-go” checks and deep diagnostic testing of spindle health.
Technical Specifications
| Specification | Details |
| Manufacturer | TAC Rockford |
| Part Number | 465.950.000.000 |
| Taper Size | 50 (CAT/ANSI) |
| Diameter (D) | 50 mm |
| Length (L) | 300 mm |
| Retention Knob Thread | 1″-8 |
| Max Runout Error | 0.003 mm / 0.00012 in |
| Cylindricity | 0.002 mm / 0.00008 in |
The Importance of Runout Testing
Prevent Tool Failure: Excessive spindle runout causes uneven loading on cutting tool flutes, often leading to premature chipping or catastrophic tool failure. Using a precision arbor like the TAC Rockford 465 series allows you to identify spindle wear or bearing issues before they impact your production quality.
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