The Ametek Lamb 116312-00 is the 240-volt, two-stage, 5.7-inch thru-flow motor that keeps export-market and overseas-spec vacuum equipment in service after the original motor gives out. It is bought almost entirely as a replacement part by service technicians, OEM repair depots and facility maintenance staff running machines built for 220 to 240 volt mains, where a North American 120-volt motor simply is not an option. Two stages of fan give it the sealed lift a full-length hose run needs, and its published output of roughly 106.5 CFM with 98.6 inches of sealed vacuum and 281 air watts puts it firmly in working-machine territory rather than light-duty territory.
Built for these use cases
- Replacing a failed 240-volt motor in an export or overseas-specification canister or upright vacuum
- Central vacuum power units wired for 220 to 240 volt mains
- Dry-pickup commercial vacuums and OEM machines built to non-North-American voltage
- Repair depots and OEM service benches that stock 240-volt spares
- Blower and air-mover applications handling clean, dry, filtered air
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.
Ametek publishes this motor at 1070 watts input with a nameplate speed near 24,659 RPM, full-load current of 4.2 amps and a maximum of 4.4 amps at 60/50 Hz. It is rated for intermittent duty in an open drip-proof enclosure with Class A insulation and a 40 degree C maximum ambient, and it is specified for clean, dry, filtered air only.
Two source conflicts are worth stating plainly rather than papering over. Our catalog title has carried this motor as 220V; Ametek Lamb and its distributors publish 116312-00 as a 240-volt motor, and the two descriptions cover the same nominal 220 to 240 volt supply band - check the plate on the motor you are removing. Our title also describes it as ball bearing, while the published bearing specification for 116312-00 is ball and sleeve. We are stating both rather than picking the flattering one.
Specifications
- Manufacturer part number: 116312-00
- Frame diameter: 5.7 inches
- Blower stages: 2
- Cooling: Thru-flow
- Voltage: 240 V, 60/50 Hz, single phase
- Power input: 1070 W
- Airflow: 106.5 CFM
- Sealed vacuum: 98.6 inches of water
- Air watts: 281
- Full load amps: 4.2 A (4.4 A maximum)
- Nameplate speed: 24,659 RPM
- Bearing type: Ball and sleeve (per published data)
- Enclosure: Open drip proof, Class A insulation
- Duty: Intermittent, 40 degrees C maximum ambient
- Air handled: Clean, dry, filtered air only
Frequently asked questions
Is the 116312-00 a 220-volt or a 240-volt motor?
Ametek Lamb publishes it as 240 volt, and our catalog title has described it as 220 volt. Both refer to the same nominal 220 to 240 volt supply band used outside North America. Check the voltage stamped on the motor you are removing, and do not fit this motor to a 120-volt machine.
Can I use this motor to pick up water?
No. This is a thru-flow motor, meaning the working air cools the armature. Water, foam and cleaning solution in the airstream reach the windings directly. Wet recovery calls for a bypass motor.
How do I know this will fit my machine?
Match four things against the motor you are removing: 5.7-inch frame diameter, two stages, thru-flow cooling and 240-volt supply. Body diameter alone is not enough to guarantee fitment.
How long should this motor last?
Service technicians generally plan on 800 to 900 hours from a vacuum motor of this class before bearings or the armature fail. Changing carbon brushes at the halfway point extends that considerably.
My vacuum smells like something is burning. Is that the brushes?
No. A burning smell means the armature has overheated where the brushes ride. Shut the machine off immediately rather than finishing the job. That motor needs replacing, not new brushes.
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.
