Product overview
A 1600 watt two-stage tangential bypass motor in the 6.6 inch frame. This is the high-airflow option in the Ametek range — two stages rather than three, with a large frame and a high efficiency fan set, so it moves considerably more air than the smaller motors while drawing less current than a 7.2 inch three-stage.
It carries the Lamb Green Power Label and a curved brush design rated beyond 1500 hours.
Specifications
| Ametek model | 122236-18 |
| CCW code | SS-24-00443 |
| Frame size | 6.6 inch |
| Stages | Two |
| Voltage | 230 V |
| Power | 1600 W |
| Discharge | Tangential bypass |
| Bearings | Double ball |
| Sealed vacuum | 133.9 inches of water |
| Maximum airflow | 139.9 CFM |
| Maximum air watts | 646 |
| Maximum current | 7.4 A |
| Speed | 29,652 rpm |
| Brush life | 1500+ hours (curved brush) |
| Overall efficiency | Up to 41% |
Important — check the base before ordering. This motor has more than a half inch taper at the bottom. It is not a flat-base motor, and it will not seat correctly in a housing expecting one. Compare the base of the motor you are removing.
Applications
- Commercial and residential central cleaning systems
- Car wash vacuum and blower systems
- Equipment that requires the working air to be separated from the motor cooling air
Designed to handle clean, dry, filtered air only.
Choosing and fitting a replacement vacuum motor
Match the frame size, stage count, discharge type and voltage. All four have to agree. A motor of the right diameter with the wrong number of stages will fit the housing and then underperform, and a peripheral-discharge motor will not seal correctly in a housing built for tangential discharge.
Stages set vacuum, not airflow. Adding a stage raises sealed lift and does comparatively little for open airflow. A three-stage motor is the choice for wands and deep extraction where the tool restricts flow; a two-stage suits higher-flow work and draws less current.
Bypass motors need clean, dry, filtered air. The cooling air path is separate from the working air path, which is exactly why these motors last — but it also means the working side must never see water or fine dust. Most motors that fail early were drowned, not worn out.
Check the brushes before you condemn the motor. Carbon brushes are the usual wear item and are far cheaper than a motor. A motor that has lost power, sparks heavily at the commutator or runs rough is often a brush job.
Replace the gasket and check the mount. A vacuum motor is only as good as its seal. Refitting a new motor onto a hardened gasket leaks air and costs lift. Inspect the mounting spring or grommets at the same time — vibration transmitted into the housing shortens motor life.
