Description
Genuine OEM Lamb Ametek 122178-18 Vacuum Motor – 8.4″ 2-Stage, 240 Volt
The Lamb Ametek 122178-18 is a genuine OEM 8.4-inch, 2-stage, 240 volt high-efficiency tangential bypass vacuum motor featuring a tapered fan system and advanced cooling design. This motor delivers exceptional lift, airflow, and durability, making it ideal for commercial and residential central vacuum systems, car wash vacuums, and blower applications.
With 1500+ hours of operational life, a double-stage tapered fan, and up to 45% greater efficiency than standard tangential motors, the 122178-18 is one of the most advanced OEM motors in the Ametek Lamb lineup.
Protect Your New Motor from Premature Failure with Our Recommended Filtered Motor Gasket:
Don’t risk shortening the life of your new motor! For maximum protection, we strongly recommend using our exclusive Filtered Motor Gasket (Part # MTR1500). This gasket filters out dust and debris before they reach the motor, preventing internal damage and extending motor life.
Our filtered gasket:
- Is exclusive to Central Vacuum Factory
- Fits flush with no added mounting height
- Installs as easily as a standard gasket
- Provides superior filtration and long-term protection
For a standard gasket option, see Part # MTR511.
Recommended Motor Filter
To further extend the life of your motor, use a protective motor filter. This prevents dust and dirt from entering the fan system and is highly recommended for all vacuum motors.
See our standard motor filter: Part # MTR553.
Replacement Motor Brushes
Uses carbon brush set: Part # MTR1190
Motor Specifications:
- Motor Type: Bypass
- Discharge: Tangential
- Bearings: Double Ball Bearing
- Sealed Vacuum: 145.5 inches
- Maximum Air Watts: 685
- Maximum Air Flow: 143.2 CFM
- Maximum Amps: 7.2
- Motor Speed: 29,577 RPM
Special Features:
- Double-stage tapered fan
- 1500+ hour life (Curved Infinity Carbon Brush)
- Up to 45% overall efficiency
- High-efficiency cooling system
- Lamb Green Power Label
- UL recognized, category PRGY2(E47185)
- CSA certification pending
- Same mounting pattern as Lamb’s 7.2″ tangential bypass motors
- Thermal device for locked-rotor and overload protection
- Patent-pending bearing protection for wet applications
Common Uses for the 122178-18 Motor:
- Commercial and residential central vacuum systems
- Car wash vacuums and blower systems
- Equipment requiring separation of working air from motor ventilation air
- Applications requiring high lift and high airflow
- Systems using 8.4″ tangential bypass motors
Designed to handle clean, dry, filtered air only.
Installation note:
Over-tightening of the mounting screws may cause the fan casing to push into the fan blades and may damage the fans. This situation is not covered under the Motor Warranty Program and will not be approved if submitted. If motor is turned in under warranty and is found to have the type of damage explained above, the warranty will be denied. When mounting your new motor, in most cases a touch BEYOND “finger tight” is all that is required to mount and seat the motor sufficiently.