Ametek Lamb Motor 117549-12...
$298.99
Product details
This Ametek Lamb motor, part 117549-12, is a two-stage, 7.2-inch, 120-volt bypass unit with the discharge horn fitted. The larger 7.2-inch frame is generally paired with longer pipe runs than the smaller 5.7-inch Lamb motors, since it can move more air against the added resistance of distance.
Ametek builds this one on its 7.2-inch Premier platform with non-loading fans, classes it as a high performance motor, lists its input power at 1625 watts, and rates the 7.2-inch bypass tangential family at sealed vacuums up to 135 inches of water lift and flow rates up to 125 CFM. The replacement brush kit is 833450-57.
Bypass construction routes the motor's cooling air around the dirty airstream instead of through it, which keeps the windings cleaner over the life of the motor and is a large part of why bypass motors tend to outlast thru-flow designs in continuous residential use. The horn is the discharge duct rather than an alarm, and it directs exhaust air into the power unit housing the way it was designed to vent, so it needs to travel with the motor rather than being reused from the old one.
Motors on this frame wear the same way regardless of brand: suction thins out at the farthest inlets first, the unit gets noticeably louder as the bearings age, and a hot electrical smell or visible sparking at the brushes signals the end is close. Several central vacuum brands used Lamb's 7.2-inch two-stage motors over the years, so verify the horn style and mounting boss against your existing motor's part diagram before ordering rather than matching by brand name alone.
- Part: 117549-12, two-stage bypass motor with discharge horn
- Spec: 7.2-inch Premier frame, 120 volt AC, two-stage bypass
- Power: 1625 watts input
- Replacement brush kit: 833450-57
- Before ordering: verify horn style and mounting boss against your machine's part diagram
