Ametek Lamb 122381-00 Vacuum Motor 120 Volt 2 Stage 5.7" Peripheral Bypass Vacuum Motor 1050 Watt Fits Husqvarna S26 F26 Ermator G22
The Ametek Lamb 122381-00 is a commercial-grade, 120-volt vacuum motor featuring a two-stage fan system and peripheral-bypass discharge. It is designed for equipment that keeps the working vacuum air separated from the air used to cool the motor.
This motor is commonly used as a replacement vacuum motor in selected commercial dust collectors and industrial vacuum systems, including certain Husqvarna and Ermator machines.
Important: Match the complete motor part number, voltage, fan stages, discharge style, mounting dimensions, terminals and overall motor configuration before ordering. Similar-looking vacuum motors are not necessarily interchangeable.
Product Specifications
| Manufacturer |
Ametek Lamb / Bison |
| Manufacturer Part Number |
122381-00 |
| Voltage |
120 Volts AC |
| Frequency |
60 Hz |
| Motor Diameter / Frame Size |
5.7 inches / approximately 145 mm |
| Fan Stages |
2 Stage |
| Discharge Style |
Peripheral Bypass |
| Rated Power Level |
1050 Watts |
| Maximum Published Watts |
1120 Watts under factory test conditions |
| Speed |
Single Speed |
| Bearings |
Double Ball Bearings |
| Air Requirements |
Clean, dry and filtered air only |
| Replacement Carbon Brush Kit |
Ametek 833392-61 |
Known Equipment Applications
Reported applications include selected:
- Husqvarna S26 dust collectors
- Husqvarna / Ermator F26 dust collectors
- Ermator G22 dust collectors
Equipment manufacturers can use different motors during a model's production history. Confirm the motor number printed on your original motor before purchase.
Peripheral-Bypass Design
A peripheral-bypass motor uses a separate stream of air to cool the motor. The vacuumed or working air passes through the fan system and exits around the perimeter of the motor rather than being used to cool the armature.
This configuration is intended for machines engineered to prevent moisture, foam, dust and foreign material from reaching the motor housing and electrical components.
What You Receive
- One Ametek Lamb 122381-00 vacuum motor
Gaskets, mounting hardware, wiring terminals, carbon brushes, noise insulation, seals and machine-specific installation parts are not included unless expressly shown and stated in the product description.
Before Ordering
- Disconnect the machine from electrical power.
- Locate the complete part number on the existing vacuum motor.
- Confirm that the existing motor is marked 122381-00.
- Confirm 120-volt operation and two fan stages.
- Compare the discharge arrangement, mounting points and electrical connections.
- Inspect the machine for clogged filters, restricted airflow or moisture damage that may have caused the original motor failure.
Electrical installation notice: Installation and testing should be performed by a qualified service technician. Disconnect all power before servicing. Improper wiring, blocked cooling airflow, liquid intrusion or operation with damaged filters can result in motor failure, electrical shock or equipment damage.
Frequently Asked Questions
Is this a tangential-discharge motor?
No. The 122381-00 uses a peripheral-bypass discharge arrangement.
Is this a two-stage motor?
Yes. It has two fan stages.
Does this motor operate on 120 volts?
Yes. It is designed for 120-volt AC, 60 Hz operation.
What carbon brushes fit this motor?
The current manufacturer listing identifies replacement brush kit 833392-61. Verify brush condition and replace brushes in matched sets when servicing the motor.
Can this motor vacuum water directly?
The motor must be installed in properly designed equipment that prevents water, foam and debris from entering the fan system, motor housing and electrical components. Never operate the motor outside the protection systems supplied by the equipment manufacturer.
Will it fit every Husqvarna S26 or F26?
Do not order by machine model alone. Confirm the part number on the motor currently installed because equipment specifications can change during production.
Replacement-Part Notice
Display photos are provided for general identification. Orders are fulfilled according to the manufacturer part number purchased. Minor changes in wiring, terminals, brackets, labels, colors or appearance may occur when the manufacturer updates production.
Specifications and equipment compatibility are subject to change without notice. The purchaser is responsible for confirming voltage, dimensions, discharge style and application before installation.