{"product_id":"castair-oil-filter-for-d10-spin-on-rotary-compressors-rofd10","title":"Castair Oil Filter for D10 Spin On Rotary Compressors ROFD10","description":"\u003cp\u003eThe \u003cstrong\u003eCastair ROFD10\u003c\/strong\u003e is the OEM spin-on oil filter for Castair rotary screw compressors equipped with the \u003cstrong\u003eD10 air end\u003c\/strong\u003e. The D10 air end is used on Castair's 25–40 HP rotary screw models. This is an automotive-style spin-on filter element — easy to service without tools beyond a filter wrench, no housing to disassemble, and no element to handle. Castair designs its rotary screw maintenance components to be \"off-the-shelf\" and serviceable by shop personnel, not proprietary units requiring dealer service. The ROFD10 is the oil filtration side of that commitment.\u003c\/p\u003e\n\n\u003ch2\u003eWhy the Oil Filter Matters in a Rotary Screw Compressor\u003c\/h2\u003e\n\u003cp\u003eIn a rotary screw compressor, the lubricating oil does three jobs simultaneously: it lubricates the rotor bearings, it seals the rotor meshing clearances, and it cools the compressed air\/oil mixture before separation. That oil circulates continuously through the air end, the separator, and the cooler. A clogged or bypassing oil filter lets particulate contamination circulate through bearing journals and rotor timing gears — the exact components that determine air end longevity. At 25–40 HP, air end replacement is a significant expense. The ROFD10 filter is not a cost to minimize; it is insurance on your air end investment.\u003c\/p\u003e\n\n\u003ch2\u003eMaintenance Interval and Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible air end:\u003c\/strong\u003e D10 (Castair designation for 25–40 HP rotary screw air ends)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter type:\u003c\/strong\u003e Spin-on, automotive-style paper element\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance kit:\u003c\/strong\u003e Available as part of the MKD10 preventative maintenance kit (includes 2 air filters, 4 oil filters, 1 separator filter, 5 gallons synthetic Cast-Lube oil — 10% savings)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil used with:\u003c\/strong\u003e GA4000 or FG4000 Castair synthetic rotary screw oil (1-year\/4,000 hour rating)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService interval:\u003c\/strong\u003e Per Castair maintenance schedule — replace oil filter with each oil change\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHour meter:\u003c\/strong\u003e Standard on all Castair rotary screw units for maintenance tracking\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eD10 Air End — Compressor Context\u003c\/h2\u003e\n\u003cp\u003eThe D10 air end is found in Castair rotary screw compressors in the 25–40 HP range. These units run at 100% duty cycle, factory filled with 4,000-hour synthetic lubricant, and operate at 135, 150, or 175 PSI depending on the ordered pressure range. A typical 30 HP D10-equipped machine delivers approximately 130 CFM at 100 PSI. At that utilization level, filter maintenance is not optional — it is what keeps the air end running at the hours-stamped rating.\u003c\/p\u003e\n\n\u003ch2\u003eMaintenance Kit Option\u003c\/h2\u003e\n\u003cp\u003eIf you are doing a full scheduled service on a D10 machine, consider the \u003cstrong\u003eMKD10 preventative maintenance kit\u003c\/strong\u003e, which includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2 × RAFD10 air filter elements\u003c\/li\u003e\n\u003cli\u003e4 × ROFD10 oil filters (this part)\u003c\/li\u003e\n\u003cli\u003e1 × RSFD10-16-G30 separator filter element\u003c\/li\u003e\n\u003cli\u003e5 gallons GA4000 synthetic Cast-Lube oil\u003c\/li\u003e\n\u003cli\u003e10% savings vs. individual purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e ROFD10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Type:\u003c\/strong\u003e Spin-on oil filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Air End:\u003c\/strong\u003e Castair D10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Compressor HP:\u003c\/strong\u003e 25–40 HP rotary screw models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From OEM Diagnostic Tools?\u003c\/h3\u003e\n\u003cp\u003eWe supply genuine Castair OEM maintenance parts — not aftermarket substitutes. The ROFD10 is the correct filter for D10 air ends, and using the correct OEM filter matters for warranty compliance and air end longevity. Free shipping on qualifying orders. Free tech support at \u003cstrong\u003e866-217-0063\u003c\/strong\u003e. Full Castair manufacturer warranty.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342596038869,"sku":"ROFD10","price":127.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/360_F_473254957_bxG9yf4ly7OBO5I0O5KABlN930GwaMQz_9bc0ba53-1381-4a58-b5f0-571c471de255.jpg?v=1772652875","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-oil-filter-for-d10-spin-on-rotary-compressors-rofd10","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}