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 bearings, and pillow-block sealed bearings keep friction low and service life long. Fits all OWS windmills and most Canadian-made mills, with flexible fittings to match existing airline setups. The single best performance upgrade for an aging mill. 54 lbs. 5-year warranty.
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Windmill Tailfin - Galvanized
$109.95
Replacement galvanized tailfin for OWS large aeration and yard windmills. A bent or missing tailfin stops the head from tracking the wind, and output falls off fast. Two-piece design makes the swap...
Windmill Dome - Galvanized
$43.95
Weather-resistant galvanized replacement dome for OWS windmills. Installs quickly with the included self-tapping screws and keeps the hub protected from rain and debris.
Windmill Compressor Bearings Kit
$34.95 - $189.95
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...
Windmill Tower Hinge Kit - Galvanized
$54.95
A pair of heavy-duty galvanized hinges that mount at the tower base so the whole windmill can be raised and lowered by tilting rather than climbing. The single most useful convenience add-on for head...