Rolair K17 Single-Stage Compressor Pump without Flywheel

Description

In harsh pump repair shop rebuilds, the Rolair K17 Single-Stage Compressor Pump restores high-volume air output on commercial contractor wheelbarrow and stationary shop air compressors. The cast-iron twin-cylinder pump produces 4.0 to 6.5 CFM displacement at operating pressures up to 135 PSI when coupled to one-to-two horsepower electric motors. Equipment mechanics rebuild damaged jobsite compressors without replacing entire machines. Operating this pump requires installing an external belt pulley or flywheel.

Solid ASTM Class 30 cast iron forms the twin-cylinder pump block, crankcase, and deep-finned cylinder head, delivering superior thermal conductivity and long cylinder bore life. Precision-ground crankshaft journals turn inside heavy-duty ball bearings supported by splash lubrication. Concentric Swedish stainless steel reed valves resist carbon buildup and fatigue under continuous load cycles. Sized as a universal bare replacement pump, the unit weighs 30 lbs, measuring 10.5 inches long, 9 inches wide, and 12 inches high.

Pump Displacement Airflow Bench Limits

Flowmeter dynamometer testing confirms the pump produces 4.0 CFM at 90 PSI when driven at 750 RPM by a 1.5-horsepower electric motor, and up to 6.2 CFM at 90 PSI when driven at 1050 RPM by a two-horsepower motor. Finned cast-iron cylinder barrels dissipate operating heat, holding crankcase oil temperatures below 160 degrees Fahrenheit during four-hour continuous load trials. Concentric reed valves withstand ten million continuous pressure flex cycles without metal fatigue.

Key Features of Rolair K17

Equipment repair shops and contractors buy Rolair K17 Single-Stage Compressor Pumps to rebuild worn contractor compressors and custom pneumatic power units. Compare commercial replacement air compressor pump pricing to restore high-pressure air output on jobsite equipment.

• Solid 100-percent cast-iron cylinder and crankcase construction delivers exceptional thermal heat dissipation and long service life.
• Twin-cylinder single-stage design produces up to 6.5 CFM displacement, matching one-to-two HP electric motors cleanly.
• Concentric Swedish stainless steel reed valves resist heat deformation and carbonization, ensuring long maintenance intervals cleanly.
• Standard four-bolt slotted base pattern allows fast direct mounting onto standard compressor tank saddle plates cleanly.
• Precision-ground crankshaft features a standard tapered keyed shaft to mount existing customer belt pulleys or flywheels cleanly.
• Integrated oil sight glass provides immediate visual confirmation of proper crankcase lubricant level before shift starts.

Compressor Rebuild Negative Selection Filter

The universal four-bolt slotted base pattern aligns with standard compressor tank saddle plates, allowing quick engine or motor belt alignment. Do not purchase this bare pump without an appropriate cooling fan flywheel, for two-stage 175-PSI applications, or direct-drive 3450 RPM motor couplings without reduction belts. Routine maintenance requires verifying crankcase oil level before daily operation, changing synthetic pump lubricant after the initial fifty-hour break-in period, and cleaning foam air intake filter elements every forty operating hours.

Factory Warranty Delivery Manifest

Rolair backs this bare replacement compressor pump with a 1-Year limited manufacturer warranty covering casting flaws, valve breakage, and bearing failures. The factory shipment box includes one bare K17 cast-iron compressor pump without flywheel, air intake filter assembly, and an illustrated technical parts breakdown guide.