{"product_id":"hertel-1000188-lh-mtjn-indexable-turning-toolholder","title":"Hertel 1000188 Lh Mtjn Indexable Turning Toolholder","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 1000188 is a left-hand MTJN-style indexable turning toolholder engineered for negative-rake external turning operations on CNC and manual lathes. The holder features a 1 x 1 inch square steel shank and an overall length of 6 inches, making it a rigid, mid-size solution for general turning work. It accepts TN..33. and TN.. 432 series triangular inserts secured by a clamp and screw holding method. The MTJN geometry provides a 3-degree lead angle suited for straight turning, shoulder work, and finishing cuts. Licensed machinists, CNC operators, and toolroom technicians install this holder in turning centers and engine lathes where consistent insert indexing and repeatability are required.\u003c\/p\u003e\n\u003cp\u003eThis toolholder is suited for medium-duty turning applications on ferrous and non-ferrous materials in both production and job-shop environments. The 1 x 1 inch shank fits standard OD turning tool stations on most engine lathes and CNC turning centers. The left-hand orientation positions the cutting edge for specific approach directions, particularly when machining toward a shoulder or working on a second operation setup. No coolant-through capability is present, so external flood or mist coolant should be directed at the cutting zone during use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMTJN toolholder style with left-hand orientation and 3-degree lead angle\u003c\/li\u003e\n  \u003cli\u003eNegative rake geometry reduces cutting forces and extends insert life on rigid setups\u003c\/li\u003e\n  \u003cli\u003eAccepts TN..33. and TN.. 432 triangular indexable inserts\u003c\/li\u003e\n  \u003cli\u003eClamp and screw insert holding method for secure, repeatable seating\u003c\/li\u003e\n  \u003cli\u003e1 x 1 inch steel shank with 6 inch overall length for standard tool post fitment\u003c\/li\u003e\n  \u003cli\u003eHead length of 1.19 inches and back-of-bar to cutting edge of 1.25 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned to accept TN..33. and TN.. 432 series triangular indexable inserts with a 0.5 inch inscribed circle. Fits standard 1 x 1 inch OD turning tool stations on engine lathes and CNC turning centers.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC toolroom technician. Ensure the machine spindle is fully stopped and the turret or tool post is in a safe, locked position before mounting or removing the holder. Verify insert seating and clamp hardware torque against the insert manufacturer guidelines before starting a cut. External coolant should be applied at the cutting zone, as this holder does not support coolant-through delivery.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: MTJN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Width\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.19 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 0.5 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: TN..33. and TN.. 432\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Multi-Option\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.7 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1000188\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51737854443826,"sku":"1000188","price":240.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7283298efacbdb3df6d26d4c4e1298af.jpg?v=1788794396","url":"https:\/\/voomisupply.com\/products\/hertel-1000188-lh-mtjn-indexable-turning-toolholder","provider":"Voomi Supply","version":"1.0","type":"link"}