The FUJI ELECTRIC VFZ501A-7W is a regenerative ring compressor — a three-phase blower that pulls vacuum or pushes pressure through a single inlet and outlet. Out here in the grease, a ring compressor is what you bolt to a machine skid to move air for dust collection, pneumatic conveying, or vacuum hold-down. This one's rated for 2.7 hp, delivering up to 135 cfm free air with a maximum vacuum of 83 inches of water column and a maximum operating pressure of 84.7 inches of water column. It runs on 230/460 VAC three-phase, 60 Hz, and draws 7.8 A on the low-voltage tap and 3.7 A on the high-voltage tap. That dual-voltage capability means you can wire it for the supply you've got on the floor without swapping the motor — handy when a machine gets moved between plants with different services. The housing is cast aluminum with a Totally Enclosed Fan-Cooled (TEFC) enclosure, so it sheds heat and keeps dust out. It carries a NEMA Premium IE3 efficiency rating, which is the current standard for energy-conscious motor-driven equipment. Inlet and outlet are both 1-1/2 inch NPT female ports — common pipe thread, easy to plumb into your existing line.
Certifications include CE, CSA, and UR RoHS. The UR mark covers the motor under UL recognition, and CSA covers Canadian installation. RoHS compliance keeps it clean for export and environmental reporting.
The 83 in wc maximum vacuum and 84.7 in wc maximum pressure tell you this is a medium-duty blower — it's not a high-vacuum pump for deep vacuum, and it's not a high-pressure compressor. It's sized for applications like vacuum pick-and-place, air knives, aeration, and material conveying where you need a solid 3-5 PSI differential. The 135 cfm flow at free air drops off as backpressure increases, so size your piping and filter accordingly. Noise is rated at 85 dB — that's loud enough to require hearing protection in most industrial environments. Plan for a silencer on the discharge or locate the blower in a mechanical room away from operators if noise is a concern. Thermal protection is pilot-duty type, meaning the motor's internal overloads switch a control circuit rather than interrupt the motor power directly. That's typical for larger motors where you'd run the power through a contactor and let the pilot-duty thermostat trip the contactor coil. Maximum ambient temperature is 104 °F, and the maximum air temperature rise is 118 °F — keep the intake air cool and the blower won't cook itself.