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\n \n \n\n \n\n \n \n \n \n \n \n \n \n $2,401.00\n\n\n \n\n \n \n \n \n \n \n Price reduced from\n \n $2,609.95\n\n\n \n \n \n\n\n
\n\n\n", "images": { "large": [ { "alt": "Rolair PMP22K50CH Compressor 2-Stage Pump W/Flywheel", "url": "/on/demandware.static/-/Sites-wholetoolbox-master-catalog/default/dw1e90207c/images/large/p/m/pmp22k50ch.png", "title": "Rolair PMP22K50CH Compressor 2-Stage Pump W/Flywheel" } ], "small": [ { "alt": "Rolair PMP22K50CH Compressor 2-Stage Pump W/Flywheel", "url": "https://www.wholetoolbox.com/dw/image/v2/BMMB_PRD/on/demandware.static/-/Sites-wholetoolbox-master-catalog/default/dw1e90207c/images/large/p/m/pmp22k50ch.png?sw=140&sh=140", "title": "Rolair PMP22K50CH Compressor 2-Stage Pump W/Flywheel" } ] }, "selectedQuantity": 1, "minOrderQuantity": 1, "maxOrderQuantity": 1, "variationAttributes": null, "sku": "PMP22K50CH", "longDescription": null, "shortDescription": "The Rolair PMP22K50CH 2-Stage Pump W/Flywheel is capable of compressing air in a multi-stage process to be utilized in appliance systems. This part is designed to facilitate smooth rotation and ensure consistent functioning of the pump, while the two stages of compression are responsible for boosting the air's pressure. It has to be placed in the compressor assembly, in contact with associated parts, to deliver compressed air to the storage tank. The design features allow efficient air delivery, enhanced air generation and performance balance in long working cycles.", "technicalDetails": null, "showAttributeSpecs": true, "productHighlights": null, "installationGuide": null, "troubleShootingGuides": "

The Rolair PMP22K50CH is a heavy-duty two-stage belt-drive compressor pump designed for high airflow and continuous-duty industrial use. It includes a large 17.72\" flywheel that helps stabilize RPM and maintain smooth compression cycles under load.

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Common Issues Linked to This Pump:

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• Slow tank fill despite motor running normally.

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• Excessive vibration from the pump and flywheel assembly.

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• Unusual knocking or metallic pump noise.

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• High discharge temperature during operation.

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• Reduced CFM output at working pressure.

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Slow Pressure Build or Weak Output

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Quick Check: Measure tank fill time and compare it to rated performance under similar load conditions.

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Fix Suggestion: Inspect piston rings, valve reeds, and cylinder sealing surfaces in the PMP22K50CH pump; worn components reduce compression efficiency even if the flywheel spins normally.

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Prevention Tip: Maintain correct oil level (splash-lubricated system) and replace compressor oil at recommended intervals to preserve sealing performance.

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Excessive Vibration or Flywheel Wobble

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Quick Check: Observe flywheel rotation for side-to-side movement or belt tracking instability.

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Fix Suggestion: A misaligned or damaged 17.72\" flywheel on the Rolair PMP22K50CH can cause imbalance; inspect keyway seating and replace if cracks or warping are present.

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Prevention Tip: Ensure proper belt tension and alignment during installation to reduce uneven load on the flywheel.

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Knocking or Mechanical Noise from Pump

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Quick Check: Listen for rhythmic tapping or knocking that increases with RPM.

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Fix Suggestion: Check connecting rod bearings and valve plate assembly inside the PMP22K50CH pump; internal wear can amplify noise under compression load.

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Prevention Tip: Avoid running the pump under prolonged overload conditions that increase crankcase stress.

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Overheating During Continuous Operation

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Quick Check: Monitor pump head temperature after extended runtime.

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Fix Suggestion: Restricted airflow, low oil levels, or worn piston rings in the PMP22K50CH can increase friction and heat; servicing internal components restores cooling efficiency.

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Prevention Tip: Keep intake filters clean and ensure proper ventilation around the compressor unit.

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Customer Experience: Replacing the Rolair PMP22K50CH 2-Stage Compressor Pump W/Flywheel restored strong air output and reduced the excessive vibration that had developed after years of heavy compressor use.

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No. This pump assembly is designed for specific compatible Rolair compressor models. Confirm compatibility using your compressor model number before ordering.

" }, { "question": "What should I check if the Rolair PMP22K50CH 2-Stage Compressor Pump W/Flywheel does not resolve low-pressure issues?", "answer": "

Inspect the intake filter, check valve, pressure switch, air lines, and tank fittings for restrictions, leaks, or additional worn components affecting performance.

" }, { "question": "Can I replace this 2-stage compressor pump myself?", "answer": "

Users with mechanical experience can generally replace the 2-stage compressor pump themselves using proper tools and safety procedures. Always disconnect power, release all tank pressure, and follow the manufacturer's service instructions before beginning the installation.

" }, { "question": "What is the purpose of the Rolair PMP22K50CH 2-Stage Compressor Pump W/Flywheel?", "answer": "

This pump assembly compresses air through a two-stage process for efficient pressure generation, while the flywheel supports smooth operation and assists with pump cooling during use.

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\n Rolair PMP22K50CH Compressor 2-Stage Pump W/Flywheel\n

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Description

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\n The Rolair PMP22K50CH 2-Stage Pump W/Flywheel is capable of compressing air in a multi-stage process to be utilized in appliance systems. This part is designed to facilitate smooth rotation and ensure consistent functioning of the pump, while the two stages of compression are responsible for boosting the air's pressure. It has to be placed in the compressor assembly, in contact with associated parts, to deliver compressed air to the storage tank. The design features allow efficient air delivery, enhanced air generation and performance balance in long working cycles.\n
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\n", "productUrl": "/rolair-pmp22k50ch-2-stage-compressor-pump-w-flywheel/PMP22K50CH.html", "__gtmEvents": [] }