Replacement bearings for the OWS windmill compressor. Choose the complete three-bearing replacement, or the individual side pillow-block or middle eccentric bearing if you're renewing a single worn unit. Fresh bearings cut friction and noise and restore the compressor's rated airflow.
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Windmill Compressor - 4.5 CFM Galvanized
$995.95
The current-generation OWS windmill compressor, built on BalCam II technology: up to 4.5 CFM at 30 PSI — roughly triple the airflow of early-generation units. Stainless crankshaft, eccentric...
Windmill Aerator Replacement Head with Compressor
$1,749.00
A complete new head for a windmill that already stands. This assembly replaces the entire working end of an aeration windmill — 73" blade set, tail, and BalCam II compressor — and is the standard fix...
Windmill Pivot Bearing Upgrade
$99.95
A small upgrade with an outsized effect in light wind: the head pivot bearing lets the windmill head swing to face the breeze with less resistance, so the mill tracks and starts sooner on calm days...
Windmill Bearing Kit - Gen 2 & 3 (Non-OWS Mills)
$209.95
Bearing overhaul kit for non-OWS windmill compressors — note: this kit is not for OWS windmills. Each kit includes 3 bearings and 6 flanges sized for single and double diaphragm compressors on Gen 2...