{"product_id":"castair-adjustable-belt-tensioner-base-for-7-5-10hp-215-plate-motors-215d","title":"Castair Adjustable Belt Tensioner Base for 7.5-10HP 215 plate Motors 215D","description":"\u003ch2\u003eCastair Adjustable Belt Tensioner Base — 215D, 7.5-10 HP, 215 Plate Motors\u003c\/h2\u003e\n\u003cp\u003eThe Castair 215D is the adjustable belt tensioner base — the slide plate and bracket component — for belt-drive Castair air compressors using 7.5 to 10 HP motors on a 215 frame plate. This is the base-only version. If your tensioner mechanism is still functional but the slide base is cracked, bent, or stripped, the 215D gets your compressor back in adjustment without buying a full assembly.\u003c\/p\u003e\n\u003cp\u003eThe adjustable design is what allows you to set and maintain proper belt tension as belts stretch over time. On a fixed motor mount, belt tension degrades with every hour of operation. An adjustable tensioner base lets you move the motor on the slide to take up belt stretch and maintain the correct tension without replacing the belt prematurely.\u003c\/p\u003e\n\u003ch3\u003ePart Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 215D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Adjustable belt tensioner base (slide\/bracket only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Motor Sizes:\u003c\/strong\u003e 7.5 HP and 10 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame \/ Plate:\u003c\/strong\u003e 215\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $138.91\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e215D vs. 215DM — Base vs. Complete Assembly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e215D (this part, $138.91):\u003c\/strong\u003e Tensioner base\/slide only. The adjustable bracket that mounts the motor and allows slide adjustment for belt tension. Use when the base is the failed component.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e215DM ($195.95):\u003c\/strong\u003e Complete belt tensioner assembly including tensioner mechanism and mount. Use when you need a full replacement or are building up from components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are not certain which part applies to your failure, call us — we can help you identify the specific component that needs replacement on your Castair compressor model.\u003c\/p\u003e\n\u003ch3\u003eHow Belt Tensioner Bases Work\u003c\/h3\u003e\n\u003cp\u003eOn a belt-drive compressor, the motor mounts on a sliding base plate that can be moved away from the pump to tension the drive belt, then locked in position. As the belt stretches over time, the base slides again to compensate. The 215D provides the structural base and adjustment mechanism for this process on 215 frame motor compressors.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSliding adjustment:\u003c\/strong\u003e Motor position adjusts along the base to set belt tension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLock-down:\u003c\/strong\u003e Bolts secure the motor at the correct tension position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame-specific fit:\u003c\/strong\u003e Sized specifically for 215 frame (NEMA 215T or equivalent) motors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen Does a Shop Need This Part?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCracked or bent slide base:\u003c\/strong\u003e Impact damage or corrosion can compromise the base plate and prevent smooth adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStripped adjustment hardware:\u003c\/strong\u003e If the slide bolts are stripped and the motor cannot be secured at the correct tension position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebuilding or upgrading a compressor:\u003c\/strong\u003e When sourcing components for a Castair compressor rebuild, using the OEM-specific tensioner base ensures correct motor alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTensioner mechanism is intact but base is failed:\u003c\/strong\u003e If the tensioner pivot\/spring mechanism works but the base is the issue, the 215D is the right part — no need for the full 215DM assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 215D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor HP Range:\u003c\/strong\u003e 7.5 HP, 10 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Frame\/Plate:\u003c\/strong\u003e 215\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Adjustable tensioner base only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eList Price:\u003c\/strong\u003e $138.91\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Manufacturer product page data was not available at time of writing. Specifications are derived from the product name and part number. Contact us to confirm fit for your specific Castair compressor model before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe have specialized in air compressor parts and equipment since 2016. Castair belt tensioner components are part of our regular inventory. We can help you determine whether you need the 215D base only or the complete 215DM assembly — just give us your compressor model number when you call.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on qualifying orders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support:\u003c\/strong\u003e Call 866-217-0063 to confirm the right part for your compressor\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest guidance:\u003c\/strong\u003e We will point you to the right part, whether it is this one or the 215DM\u003c\/li\u003e\n\u003c\/ul\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":53342502453461,"sku":"215D","price":255.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/Screenshot_27.png?v=1772652466","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-adjustable-belt-tensioner-base-for-7-5-10hp-215-plate-motors-215d","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}