Rolair 5520K17A is a 1.5 HP, 1,755 RPM single-stage pump (K17) with a 115/230V, 60 Hz open-drip-proof motor, designed for Rolair’s wheeled portable compressors. It uses cast-iron twin cylinders, ball bearings, and splash lubrication, with hardened steel valve plates and Swedish lamellar reed valves, plus an 11-inch multi‑fin flywheel and an oil sight gauge. The pump requires about 34 oz of compressor oil and includes a 0–200 psi pressure gauge as standard equipment for monitoring tank pressure.
