A wet/dry tank vacuum earns its keep on flood calls and slurry cleanup, and the motor is the whole ballgame. The Mercury BF5-09 is the 5.7-inch, 120-volt, two-stage peripheral-discharge bypass motor used in Mercury Storm wet/dry vacuums. Dropping in a fresh motor returns a tired machine to full lift for a fraction of the cost of new equipment.
Use Cases
Restoration contractors. Storm vacuums pulling water on flood jobs run their motors hard and wet; crews keep a spare BF5-09 so a weak motor never stalls an extraction.
Janitorial and facility shops. In-house techs rebuild wet/dry vacs used for scrubber recovery tanks, floor stripping slurry, and shop cleanup.
Dual-motor machines. On twin-motor Storm models, replacing both motors at once restores balanced airflow and full nameplate performance.
Specifications
- Mercury part number BF5-09
- Two-stage bypass motor, peripheral discharge
- 5.7-inch motor diameter
- 120-volt operation
- Fits Mercury Storm series wet/dry tank vacuums
Frequently Asked Questions
What does 'two-stage bypass' mean on a vacuum motor?
Two-stage means two fan stages build suction in series for stronger lift. Bypass means the motor's cooling air is kept separate from the dirty working air - essential on wet/dry vacuums where the airstream can carry water.
Which machines does the BF5-09 fit?
It is the 5.7-inch, 120-volt replacement motor for Mercury Storm series wet/dry tank vacuums, and the same motor is used on matching Sandia-branded units.
How do I know the vacuum motor is failing?
Falling suction, a screaming or grinding bearing note, sparking at the brushes, or a motor that trips breakers are the usual signs. On dual-motor Storms, one dead motor cuts pickup power roughly in half.
Is peripheral discharge important?
Peripheral discharge vents the working air out the side of the motor body, which suits tank vacuum designs like the Storm that exhaust through the head assembly.
Discount Cleaning Products is an authorized Mercury Floor Machines dealer. Every order is backed by US-based customer service from people who work with commercial cleaning equipment every day. If you are not sure this is the right part for your machine, contact us before you order and we will help you confirm the fit.
