About the 6211 4735 50 oil filter

The 6211 4735 50 is Kenrax's direct replacement oil filter for Chicago Pneumatic compressor service. Rather than a generic 'fits most' element, it is built to the specific performance envelope of the machine it replaces.

The 6221473550 oil filter is a filtration system for Chicago Pneumatic and various other compressors. It removes dirt particles from oil made for compressor, ensuring that clean and reliable oil is fed into the machine. With a durable construction and efficient filtering element, it is easy to install and maintain for various industrial applications.

What the 6211 4735 50 does in your Chicago Pneumatic compressor

The oil filter protects the lubrication circuit in an oil-injected screw compressor. Oil does three jobs at once — it cools the air end, seals the running clearance between the rotors, and conveys away wear particles. The oil filter stops those particles circulating back into the bearings and rotors. A loaded or bypassing oil filter is one of the quietest causes of premature wear in the entire machine, because it rarely produces a loud symptom before the damage is done.

The 6211 4735 50 is a scheduled-service consumable, not a repair item. Fitted as part of the Chicago Pneumatic machine's standard maintenance, it keeps the Chicago Pneumatic compressor inside its design operating band between services.

When to replace this element

• Change together with every oil change, typically 1000, 2000, or 4000 hours per the OEM manual.

• Stand-alone change is never recommended — the element and the fill should move as one.

• After any mechanical repair, run briefly then change oil and oil filter again to flush debris.

Signs it needs replacement

Replace on any of the above regardless of hour count. For this part, keeping a fresh element in stock before the interval arrives is the single cheapest insurance policy on the machine.

• A rising differential pressure across the oil filter on the gauge or controller.
• Lower oil pressure available at the bearings for the same machine load.
• Discharge temperature climbing above the machine's healthy baseline.
• Evidence of oil bypassing (unfiltered oil circulating) during normal running.

Confirming fitment for Chicago Pneumatic

Fitment for the 6211 4735 50 is confirmed against the OEM part number from your current element. WhatsApp us the number (or a photo of the element) and we verify media grade, dimensions, and sealing before dispatch. Cross-reference is available for Atlas Copco, Ingersoll Rand, Elgi, Kaeser, Chicago Pneumatic, Kirloskar, Gardner Denver, and Sullair machines.

Fitting and verification

• Check the thread, sealing ring, and anti-drainback arrangement against your old element.

• Pre-fill the new element with oil where the design allows, before screwing it on.

• Torque the element to spec — overtightening deforms the seal, under-tightening leaks.

• Note the fresh-element differential pressure as the baseline for the next service.

Ordering the 6211 4735 50

Order the 6211 4735 50 directly from Kenrax on WhatsApp or from the product page; assume part-number confirmation takes minutes, not days.