{"product_id":"parlec-b40-75sm2-shell-mill-holder-bt40-0-75-inch-pilot","title":"Parlec B40-75SM2 Shell Mill Holder BT40 0.75 Inch Pilot","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PARLEC B40-75SM2 is a BT40 taper shank shell mill holder engineered for precision face milling and shell milling operations on CNC machining centers. It features a 0.75 inch pilot diameter and a 1.75 inch nose diameter, with a projection from flange to nose end of 2.0 inches. Through-spindle coolant delivery keeps cutting zones flooded during operation, extending tool life and improving chip evacuation. The holder is balanced to 30,000 RPM, making it suitable for high-speed spindle applications where runout control is critical. Total Indicated Runout (TIR) is rated at 0.0002 inches. Note: through-coolant operation requires Parlec 028-192C, sold separately. A licensed machinist or CNC setup technician installs this holder.\u003c\/p\u003e\n\u003cp\u003eThis shell mill holder is intended for use with CNC vertical or horizontal machining centers equipped with a BT40 spindle interface. It accommodates shell mill cutting diameters ranging from 1.75 to 2 inches, making it appropriate for medium-diameter face milling in production and job-shop environments. The lock screw thread size is 3\/8-24. Both through-coolant and standard dry cutting setups benefit from the high-balance rating, and the holder is a fit for shops running aluminum, steel, and similar materials at elevated spindle speeds.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBT40 taper shank for direct spindle mounting on compatible CNC machining centers\u003c\/li\u003e\n  \u003cli\u003e0.75 inch pilot diameter accepts shell mills in the 1.75 to 2 inch cutting diameter range\u003c\/li\u003e\n  \u003cli\u003eThrough-spindle coolant delivery for improved chip evacuation and tool life (requires Parlec 028-192C)\u003c\/li\u003e\n  \u003cli\u003eBalanced to 30,000 RPM for high-speed spindle compatibility\u003c\/li\u003e\n  \u003cli\u003eTIR of 0.0002 inches for tight runout control and consistent surface finish\u003c\/li\u003e\n  \u003cli\u003e3\/8-24 lock screw thread for secure shell mill retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for CNC machining centers with a BT40 spindle taper. Accepts shell mills with a 0.75 inch pilot and cutting diameters from 1.75 to 2 inches. Through-coolant function requires Parlec 028-192C coolant-through adapter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified CNC machinist or setup technician. Power down and lock out the machining center before mounting or removing the holder from the spindle. Use a calibrated torque wrench and the appropriate BT40 retention knob rated for your spindle draw bar. Verify TIR with a dial test indicator after seating the holder to confirm runout is within specification before beginning any cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaper Size\u003c\/strong\u003e: BT40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjection Flange to Nose End\u003c\/strong\u003e: 2.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShell Mill Cutting Diameter Range\u003c\/strong\u003e: 1.75 to 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced To\u003c\/strong\u003e: 30,000 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Type\u003c\/strong\u003e: Through-Spindle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLock Screw Thread Size\u003c\/strong\u003e: 3\/8-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: PARLEC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: B40-75SM2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARLEC","offers":[{"title":"Default Title","offer_id":67906447081778,"sku":"B40-75SM2","price":206.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c67cd0f0ea4d3656f1cb0c059bf705af.jpg?v=1791168265","url":"https:\/\/voomisupply.com\/products\/parlec-b40-75sm2-shell-mill-holder-bt40-0-75-inch-pilot","provider":"Voomi Supply","version":"1.0","type":"link"}