• Highlight: Ametek 116565-13 is the ball-bearing (B/B) 5.7" 120V 3-stage tangential bypass — the long-service version of the 116565 family built for 2,000-hour-plus duty.
• Best For: Heavy-cycle commercial wet/dry vacuums, restoration extractors, and central-vac systems where the motor sees daily runtime and replacing brushes mid-warranty isn't acceptable.
• Expert Note: Ball-bearing construction (B/B) is the upgrade over sleeve-bearing variants — the trade-off is a small upfront cost premium for significantly longer service life under thermal cycling.
