Rotational speed

The number of tool revolutions per unit time, commonly reported as revolutions per minute (RPM).

Meaning and boundaries

Equal RPM does not mean equal surface speed when disc diameters differ, and the tool's unloaded display may not equal speed under load.

Why it matters in glass restoration

GlassRenu procedures specify RPM by stage, so tool accuracy, diameter, accessory rating, and load response must be controlled.

Related terms

• Peripheral speed
• Abrasive disc
• Process window
• Heat generation

References

• GlassRenu — Before You Begin
  Publisher’s original source
• GlassRenu — How To: Remove Glass-on-Glass Scratch Damage
  Publisher’s original source
• NASA — Handbook for Recommended Material Removal Processes for Advanced Ceramic Test Specimens and Components
  Publisher’s original source
• Electronic Code of Federal Regulations / OSHA — 29 CFR 1910.243 — Guarding of Portable Powered Tools
  Publisher’s original source