The Ametek Lamb 116343-00 is a two-stage, 5.7-inch thru-flow motor built for 240-volt supply, and it is the part service technicians reach for when a 240-volt dry vacuum has lost its suction and the motor is the reason. Two stages give it the sealed lift a full hose run demands, and published data puts it at 1100 watts with airflow around 109 CFM. It is a working replacement motor for machines wired outside the North American 120-volt standard, not a light-duty household part.
Built for these use cases
- Replacing a worn 240-volt motor in commercial dry vacuums and canisters
- Central vacuum power units on 220 to 240 volt supply
- Export-specification and OEM machines built for overseas mains
- Dry material and debris pickup where a bypass motor is not required
- Service depots keeping 240-volt two-stage spares on the shelf
A thru-flow motor is cooled by the working air, so every cubic foot the machine pulls also passes across the armature and field. That makes for a compact, efficient and economical package on dry pickup, and it is why thru-flow motors dominate residential and light commercial vacuum production. It is also the reason they are the wrong choice for wet recovery: moisture, foam and cleaning solution carried in the airstream reach the windings directly.
Physically it is a standard 5.7-inch Ametek Lamb body: roughly 5-7/10 inches across and about 6-1/16 inches tall overall, with thru-flow discharge. That footprint is what makes the 5.7-inch family so widely interchangeable across machine brands - but interchangeable in mounting is not the same as interchangeable in performance, which is why the stage count and voltage on this listing matter as much as the diameter.
Ametek Lamb part numbers are not interchangeable by diameter alone. Before ordering, pull the old motor and match four things: frame diameter, number of stages, discharge configuration and nameplate voltage. Two motors that share a body size can have completely different gasket surfaces, lead lengths and airflow paths, and a mismatch usually shows up as a motor that physically drops in but never reaches its rated suction.
Specifications
- Manufacturer part number: 116343-00
- Frame diameter: 5.7 inches
- Blower stages: 2
- Cooling: Thru-flow
- Voltage: 240 V
- Power input: 1100 W
- Airflow: 109 CFM
- Body diameter: Approximately 5-7/10 inches
- Overall height: Approximately 6-1/16 inches
- Discharge: Thru-flow
- Air handled: Clean, dry, filtered air only
Frequently asked questions
Will the 116343-00 run on 120 volts?
No. It is a 240-volt motor. Running it on 120 volts will not damage it immediately but it will never reach rated performance, and fitting a 240-volt motor to a 120-volt machine is a specification error, not a workaround.
Is this motor suitable for wet pickup?
No. Thru-flow means the recovered air cools the motor. For water, foam or cleaning solution recovery you need a bypass motor, where cooling air is kept separate from working air.
How do I confirm this is the right replacement?
Check the old motor for four things: 5.7-inch frame, two stages, thru-flow cooling and 240-volt supply. If the part number on the old motor is legible, read it off directly and match it.
What maintenance does this motor need?
Carbon brushes are the wear item. Inspect them around the 300 to 500 hour mark, and change them before they wear to the point where the motor surges or cuts in and out.
What is the practical life of this motor?
Technicians typically plan on 800 to 900 hours before bearings or the armature fail, with brush changes extending usable service well past the first set.
Discount Cleaning Products is an authorized dealer for Ametek Lamb vacuum motors and stocks the matching carbon brush kits, gaskets and mounting hardware alongside them. Our US-based team works with these motors every day across central vacuum systems, extractors, autoscrubbers and shop equipment, and can help you confirm frame size, stage count, discharge style and voltage against the motor already in your machine before you order.
