Kennametal 1152733 Indexable Boring Bar 19.56mm Left Hand

Product Description

The KENNAMETAL 1152733 is a left-hand E-SCLP style indexable boring bar engineered for internal turning and precision bore finishing operations. Built from solid carbide, it accepts CP-style inserts secured by screw clamp holding and features through-coolant capability to manage heat and chip evacuation at the cutting zone. The bar carries a minimum bore diameter of 19.56 mm (0.770 inches), a 5/8-inch shank diameter, and an overall length of 254 mm (10 inches). A neutral rake angle and a -5 degree lead angle define the cutting geometry. Machinists and toolroom professionals working on CNC lathes and boring mills are the primary users of this toolholder.

This boring bar is suited for internal diameter machining on CNC turning centers and horizontal boring mills where left-hand toolholder orientation is required. Its through-coolant design makes it appropriate for deep-bore applications and difficult-to-machine materials where heat buildup and chip packing are concerns. The screw-clamp insert holding method provides repeatable indexing without disturbing setup, making it a practical choice for production environments and tight-tolerance work. Insert geometry is controlled by the CP-style insert family with a 3/8-inch inscribed circle and 5/32-inch thickness.

Key Features

• Left-hand E-SCLP toolholder style for CNC turning and boring mill applications
• Through-coolant design with a 0.218-inch coolant hole diameter for effective heat and chip control
• Solid carbide construction for rigidity and vibration resistance in small-bore work
• Screw-clamp insert holding ensures secure, repeatable insert indexing
• Neutral rake, -5 degree lead angle geometry compatible with CP-style inserts
• Center-to-cutting-edge distance of 0.406 inches for precise bore offset reference

Compatibility

Designed for use with CP-style indexable inserts with a 3/8-inch inscribed circle and 5/32-inch thickness, as specified by the E-SCLP toolholder system.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered off and all axes locked out per site lockout/tagout procedures. Verify shank clamping torque against the machine tool manufacturer's specifications for 5/8-inch boring bar holders before engaging the cut. Connect the through-coolant supply line according to the machine tool's internal coolant system requirements before initiating a cycle. Inspect insert seating and screw clamp engagement after each index to confirm cutting edge position.