{"product_id":"accupro-778604-tapping-chuck-bt40-tension-compression","title":"Accupro 778604 Tapping Chuck BT40 Tension Compression","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 778604 is a taper shank tapping chuck designed for tension and compression tapping operations on machining centers and CNC equipment. It accepts a BT40 taper connection and handles tap sizes from 5\/16 inch minimum to 7\/8 inch maximum capacity, covering a wide range of standard tap sizes in one setup. The 4.5-inch projection places the tap at the correct working depth for most vertical machining applications. The quick-change design reduces tool changeover time during production runs. This chuck is installed and set up by machinists and CNC operators working in job shops, production facilities, and tool rooms.\u003c\/p\u003e\u003cp\u003eThe 778604 is suited for general-purpose tapping applications on vertical machining centers equipped with BT40 spindle interfaces. It handles pipe tap sizes from 1\/4 inch to 1\/2 inch, making it useful for part programs that require both standard and pipe thread tapping in a single setup. The tension and compression floating mechanism compensates for minor feed rate discrepancies, helping protect tap life and thread quality across a range of materials and cycle conditions.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBT40 taper shank for direct spindle mounting on compatible machining centers\u003c\/li\u003e\n\u003cli\u003eTension and compression tapping style for feed compensation and tap protection\u003c\/li\u003e\n\u003cli\u003eTap capacity range of 5\/16 inch to 7\/8 inch for standard taps\u003c\/li\u003e\n\u003cli\u003ePipe tap capacity range of 1\/4 inch to 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e4.5-inch projection for clearance in typical vertical milling setups\u003c\/li\u003e\n\u003cli\u003eQuick-change design with Size 2 tap adapter for fast tap swaps\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with BT40 spindle interfaces and Size 2 tap adapters. Compatible tap capacity ranges from 5\/16 inch to 7\/8 inch for standard taps and 1\/4 inch to 1\/2 inch for pipe taps.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator following the machine tool manufacturer's toolholder retention and drawbar torque procedures. Power down and lock out the spindle before mounting or removing the chuck. Verify BT40 taper and chuck bore are clean and free of chips or coolant residue before seating. Confirm tap adapter size compatibility before running a cycle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Style\u003c\/strong\u003e: Tension and Compression\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Taper Shank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaper Size\u003c\/strong\u003e: BT40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Tap Capacity\u003c\/strong\u003e: 5\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Tap Capacity\u003c\/strong\u003e: 7\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Pipe Tap Capacity\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Pipe Tap Capacity\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Adapter Size\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-Change\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough Coolant\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 778604\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730061689138,"sku":"778604","price":653.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/155d95ecc6cdd5e15e3f321387a9fb0d.jpg?v=1788711021","url":"https:\/\/voomisupply.com\/products\/accupro-778604-tapping-chuck-bt40-tension-compression","provider":"Voomi Supply","version":"1.0","type":"link"}