Rolair
Rolair PMP22BK119GR air compressor pump 2 stage 2 cylinder 7.5 hp 175 psi
Two-stage, two-cylinder pump delivers 17.3 to 23.0 cfm at 175 psi with a 7.5 hp rating
- Two-stage compression delivers higher pressure efficiency
- 175 psi maximum operating pressure for demanding tasks
- 5 hp motor provides strong power output
- 3 to 23.0 cfm free air flow at max pressure
- Cast iron and aluminum construction ensures durability
Two-Stage Pump for High-Pressure Shop Air
The Rolair PMP22BK119GR is a two-stage, two-cylinder compressor pump rated at 7.5 hp with a maximum operating pressure of 175 psi. It delivers free air flow of 17.3 cfm at 175 psi and 23.0 cfm at lower pressure, running at 1,200 RPM with a 15-inch flywheel included. The cast iron and aluminum construction uses splash lubrication and stainless steel reed valves for durability in stationary installations.
Suited for Replacing Twin-Cylinder Units on 175
This pump fits workshops needing a direct replacement for a two-stage, CCW-rotation unit with a single B-groove flywheel and 3 1/16-inch stroke. It is not for builders who need a three-cylinder design, higher CFM at 175 psi, or a pump configured for CW rotation or multi-groove drive systems.
Verify Mounting, Drive and Electrical Compatibility
Confirm the existing tank accepts a two-cylinder block with the same bolt pattern and that the motor provides 7.5 hp at 1,200 RPM with CCW shaft rotation. Check that the B-section pulley matches the single groove on the 15-inch flywheel and that the electrical supply supports the motor’s voltage and phase requirements. Ensure plumbing can handle 175 psi discharge pressure.
Highlights
- Two-stage compression delivers higher pressure efficiency
- 175 psi maximum operating pressure for demanding tasks
- 5 hp motor provides strong power output
- 3 to 23.0 cfm free air flow at max pressure
- Cast iron and aluminum construction ensures durability
Specifications
| Brand | ROLAIR |
|---|
Questions about this item
What power source is required to run the 7.5 hp two-stage pump?
The pump needs a 7.5 hp motor or engine turning the 15 in flywheel at 1,200 RPM CCW with a single B-section groove.
Can the existing 15 in flywheel be reused if I replace an older Rolair pump?
Yes, the pump includes a 15 in flywheel with one B-section groove; match the groove and CCW rotation to your current drive.
How do I verify the pump delivers its rated output after installation?
Measure free air flow at the discharge; expect 17.3 cfm at 175 psi on the high-pressure stage and 23.0 cfm on the low-pressure stage.
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