This is the flat replacement motor filter for 5.7 inch Lamb Ametek vacuum motors, the disc of media that sits at the motor inlet and stops fine dust from reaching the armature and bearings. It is one of the least expensive parts in a machine and one of the most consequential to leave out. Dust that gets past the inlet coats the commutator, accelerates brush wear and loads the bearings, which is how a motor that should run for years fails in months.
Anyone rebuilding a central vacuum power unit, a commercial wet dry vac, a carpet extractor vacuum motor or a shop built vacuum should treat this filter as part of the job rather than an optional extra. It is standard practice to fit a fresh motor filter whenever the motor is replaced or the housing is opened, because the old filter has already collected everything it is going to collect and reinstalling it simply carries that load forward.
Built for
- Replacement 5.7 inch Lamb Ametek vacuum motors in any stage configuration
- Central vacuum power unit rebuilds and motor swaps
- Commercial wet dry vacuums and carpet extractor vacuum motors
- Shop built and OEM vacuum assemblies using the 5.7 inch Lamb motor platform
- Routine motor servicing where the housing is already open
Specifications
- Fits: 5.7 inch Lamb Ametek vacuum motors
- Style: flat disc motor inlet filter
- Function: protects armature, commutator and bearings from fine dust ingestion
- Part number: LF-1
Frequently asked questions
Do I really need a motor filter?
Yes. The motor filter is what stands between fine dust and the armature, commutator and bearings. Running a vacuum motor without one is the fastest way to shorten its life, and the cost of the filter is trivial compared with the cost of the motor it protects.
Should I replace the filter when I replace the motor?
Always. The old filter has already absorbed its service life of dust, and reinstalling it puts a loaded restriction directly in front of a brand new motor. Fitting a fresh filter is standard practice on any motor swap or housing rebuild.
Will this fit any 5.7 inch Lamb motor?
It is made for the 5.7 inch Lamb Ametek platform, which covers a wide range of one stage through six stage motors. Frame sizes differ between the 5.7 inch and other Lamb families, so confirm your motor diameter before ordering. Our team can check the part against your motor number.
Is this the same as a motor gasket?
No. A motor gasket is a foam ring that seals the motor to the housing and prevents bypass air. This is the flat filter that cleans the air entering the motor. Many rebuilds need both, and they are separate parts.
Discount Cleaning Products is an authorized dealer for the brands we carry, and we stock genuine and OEM-equivalent replacement parts alongside the machines they belong to. Our US-based team can confirm fitment against your model and serial number before you order, so the part that arrives is the part your machine actually takes.
