Ametek Lamb Motor 116472-13...
$198.99
Product details
Part 116472-13 pairs a two-stage fan on the 5.7-inch Lamb frame with tangential bypass discharge and the discharge horn already fitted, wired for 120 volts. Ametek lists its input power at 1300 watts, and it is listed as a direct fit for the NuTone VX550 power unit.
The horn on a Lamb bypass motor is the discharge duct, not an alarm. Ametek offers this family with either a diecast or a thermoset horn discharge, both shaped to guide pressurized exhaust air out of the motor the way the power unit housing expects, which is why the horn needs to stay with the motor rather than being left off. Bypass construction keeps the motor's own cooling air separate from the dirty airstream pulled in from the house, which is why bypass motors tend to hold up longer in continuous residential service than thru-flow designs of similar size.
Ametek rates this 5.7-inch bypass tangential family at sealed vacuums up to 220 inches of water lift and flow rates up to 107 CFM, and catalogs 116472-13 as the same motor as 116472-00 with air seal bearing protection added. The replacement brush kit is 833392-67.
Central vacuum motors wear slowly: suction thins out at the farthest inlets first, the unit gets noticeably louder over a season, and a hot electrical smell or visible sparking at the brushes means it is close to the end. Central vacuum manufacturers reused Lamb's 5.7-inch tangential bypass motors across other brands and models over the years, so if your power unit is not a NuTone VX550, verify the horn style and mounting boss against your existing motor's part diagram before ordering.
- Part: 116472-13, two-stage tangential bypass motor with discharge horn
- Spec: 5.7-inch frame, 120 volt AC, 1300 watts input
- Replacement brush kit: 833392-67
- Confirmed fit: NuTone VX550
- Other power units: verify horn style and mounting boss against your machine's part diagram before ordering