What spindle taper radial runout standard should be met during machining center acceptance, and how to measure it on site?
• BT40 spindle taper radial runout shall be ≤0.005mm; HSK-A63 ≤0.003mm.
• Use a 0.001mm dial indicator with a test mandrel, measure three points along the taper.
• Measure after low-speed running to avoid thermal distortion errors.
• If out of tolerance, demand on-site taper grinding or spindle unit replacement.
• Use a 0.001mm dial indicator with a test mandrel, measure three points along the taper.
• Measure after low-speed running to avoid thermal distortion errors.
• If out of tolerance, demand on-site taper grinding or spindle unit replacement.