Battery machines need a vacuum motor wound for their own bus voltage, and that is the whole reason this part exists. The Ametek Lamb 11615500 (Ametek number 116155-00) is a two-stage, 5.7 in bypass motor built for 24 volt DC power, so it drops into battery-powered floor scrubbers, sweepers and mobile recovery units rather than line-voltage equipment. Facility maintenance departments and service shops buy it when a scrubber has stopped recovering solution properly and the vacuum motor has been isolated as the failed part.
Because a scrubber pulls dirty water off the floor, the bypass layout matters more here than almost anywhere else. Cooling air for the motor is routed separately from the recovered air and water, so the armature never sees the solution. Ametek pairs that with air-sealed bearings and an epoxy painted fan case, both aimed at the dirt and moisture a wet recovery machine lives in.
Built for
- Battery powered walk-behind and ride-on floor scrubbers
- Battery sweepers and mobile wet recovery units
- 24 volt DC utility and material handling vacuums
- Sprayer and fogger equipment running on a 24 volt battery bus
Specifications
- Type: Ametek Lamb vacuum motor / blower, bypass
- Blower stages: 2
- Discharge: peripheral
- Body diameter: 5.7 in
- Overall height: 6-3/4 in
- Voltage: 24 V DC
- Amps: up to 16.5
- Bearings: ball, air sealed against dirt and moisture
- Brackets: thermoset
- Fan case: epoxy painted
- Weight: 5.4 lb
- Speeds: 1
Cross-reference
Resellers list 116155-00 against Advance 56376365, Tennant 130995 and Tornado 3426. Those are reseller cross-references rather than an Ametek-published fitment list, so confirm the number on your existing motor before ordering.
Frequently asked questions
Will this run on 120 volt AC?
No. The 11615500 is wound for 24 volt DC. Connecting it to line voltage will destroy it. If your machine runs on 120V, you need a different Ametek part number.
Is it suitable for wet pickup on a scrubber?
Yes. It is a bypass motor with air-sealed bearings and an epoxy painted fan case, which is the configuration Ametek builds for wet recovery duty.
What machines does it replace?
Resellers cross-reference it to Advance 56376365, Tennant 130995 and Tornado 3426. Treat those as a starting point and verify against the part number stamped on the motor you are removing.
How long do the brushes last?
Ametek publishes a carbon brush service interval of roughly 500 to 600 operating hours. Brushes worn shorter than 3/16 in should be replaced. A motor will typically accept two brush changes before the armature or bearings become the limiting part, which puts total service life in the 800 to 1200 hour range under preventive maintenance.
What is the difference between bypass and thru-flow?
On a bypass motor the cooling air travels a separate path from the working air, so debris and moisture picked up by the machine never pass over the armature. That makes bypass motors the usual choice for wet pickup, extractors and scrubbers. A thru-flow motor cools itself with the working air, which makes it more compact and efficient but unsuitable for wet recovery unless the machine is specifically designed for it.
Discount Cleaning Products is a United States based dealer for Ametek Lamb vacuum motors and commercial cleaning equipment parts, with live technical support for matching a replacement motor to an existing machine.
