Ametek Lamb Motor 116210-85...
$128.99
Product details
Part 116210-85 is an Ametek Lamb two-stage bypass motor, 5.7 inches across the fan housing, wound for 120 volts, running on a combination of ball and sleeve bearings and fitted with a tangential discharge horn. The fan shell carries a stub inlet tube, cataloged separately as part 45847-14.
The horn is the discharge duct rather than an alarm fitting. Ametek supplies this 5.7-inch bypass tangential family with either a diecast or a thermoset horn discharge, both shaped to guide pressurized exhaust air out of the motor, and rates the family at sealed vacuums up to 220 inches of water lift and flow rates up to 107 CFM. For this part Ametek lists an input power of 925 watts, a replacement brush kit of 833326-51, and describes 116210-85 as the same motor as 116210-50 with the inlet tube added.
Bypass motors of this frame size are typically found in central vacuum power units, where keeping the motor's cooling air separate from the dirty airstream extends the working life of the motor compared to a thru-flow design. The two bearing types do different jobs: the ball bearing carries the main shaft load, while the sleeve bearing is the quieter, lower-cost choice at the other end, a combination Lamb used on several motors this size.
Wear follows a familiar pattern: a bearing note that shifts from a hum to a grind or rattle, suction that fades across every inlet, running that cuts out under load, or a burning smell. Rule out a blocked hose, an overfull canister, or a dirty filter before assuming the motor is at fault, since any of those can mimic a failing unit. This motor carries mains voltage, so disconnect power at the unit before opening it, or leave the swap to a technician.
- Part: 116210-85
- Spec: 5.7-inch frame, 120 volt AC, two-stage bypass, tangential discharge horn
- Bearings: ball and sleeve
- Power: 925 watts input
- Replacement brush kit: 833326-51
- Related parts: stub inlet tube 45847-14; same motor as 116210-50 with the inlet tube added
