{"product_id":"castair-213dm","title":"Castair 213DM","description":"\u003cp\u003eThe Castair 213DM is an adjustable belt tensioner motor base with the 7.5-10 HP motor pre-mounted — a complete base-plus-motor assembly for compressor installations using the 213T NEMA frame. The \"M\" designation means mounted: the motor is already bolted to the adjustable tensioner base, aligned at the factory, and ready to install on your compressor pump. If you are replacing both the motor and the base on a 7.5 HP three-phase Castair system, the 213DM saves installation time and eliminates field alignment guesswork.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 213DM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Frame:\u003c\/strong\u003e 213T (7.5 HP class — specifically for the 7-213-3 three-phase motor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Motor pre-mounted on adjustable belt tensioner base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Application:\u003c\/strong\u003e 7.5 HP three-phase Castair compressor systems with 213T-frame motors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuplex installation:\u003c\/strong\u003e Order two 213DM units for duplex builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Pre-Mounted Means for Your Installation\u003c\/h2\u003e\n\u003cp\u003eMotor-to-pump alignment on a belt-driven compressor determines belt life, noise level, and bearing wear. A misaligned motor causes uneven belt wear, premature bearing failure on both the motor and pump crankshaft, and increased noise. The 213DM arrives with the motor positioned correctly relative to the tensioner base — the alignment work is already done. In the field, you mount the assembly, install the belt, adjust tension using the slotted tensioner, and you're running.\u003c\/p\u003e\n\n\u003ch3\u003eThe 213T Frame Motor\u003c\/h3\u003e\n\u003cp\u003eThe motor included in the 213DM assembly is the 7-213-3 three-phase motor: 7.5 HP, 208\/230\/460V, 1.15 service factor, 213T frame, 1725 RPM, 1-3\/8 inch shaft, 130 lbs. This is a three-phase motor — if your installation requires single-phase power, you need the 215T-frame motor (7-215-1) and the 215D\/215DM base instead.\u003c\/p\u003e\n\n\u003ch2\u003e213DM vs. 213D: Which to Order\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e213D ($138.91 — base only):\u003c\/strong\u003e Order when your existing motor is serviceable and only the base needs replacement, or when you prefer to source the motor separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e213DM (contact for price — base + motor):\u003c\/strong\u003e Order when replacing both motor and base, or for new builds where you want factory-aligned assembly. Eliminates the field alignment step.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDuplex Installations with the 213DM\u003c\/h2\u003e\n\u003cp\u003eFor duplex 7.5 HP systems (two pumps sharing one tank), order two 213DM units. The Castair duplex Right From The Start kit RFS001D covers 10 HP duplex and includes oil, vibration pads, ball valves, flex hoses, and filter elements for the duplex build. Alternating controls (pressure switch or magnetic starter alternating panel) are required separately for duplex operation.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 213DM assembly: 7.5 HP 213T-frame motor pre-mounted on Castair adjustable 213D belt tensioner base\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Belts, pulleys, belt guard, and tank not included. Confirm motor voltage (three-phase only — 208\/230\/460V) matches your power supply before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eWe specialize in industrial air compressor components and can confirm the correct motor and base configuration for your installation. Free shipping, free technical support at 866-217-0063, and full manufacturer warranty on all Castair assemblies.\u003c\/p\u003e\n\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":53342501535957,"sku":"213DM","price":396.18,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-213dm","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}