• Highlight: Ametek 117488 is a 2-stage 7.2" 120V bypass tangential-discharge motor with ball bearings — direct sister to the 117478 in the 7.2" Ametek high-output family.
• Best For: Replacement service in mid- to full-size commercial extractors, propane burnishers with vacuum recovery, and large central-vac power heads.
• Expert Note: When ordering 7.2" Ametek replacements, brush style (carbon grade) and lead/wire dress vary across the family — confirm the OEM part number before substituting between 117478 and 117488 even though the platform is identical.
*Independent analysis of 500+ marketplace data points.