Micro 100 20-0821 Indexable Boring Bar A04F-SCLCR 2

Product Description

The MICRO 100 20-0821 is a right-hand indexable boring bar designed for precision internal turning and facing operations on CNC lathes and manual turning centers. Built to the A04F-SCLCR 2 toolholder style, it accepts 50-1100 series inserts and delivers consistent, repeatable performance in tight-bore applications. The bar features a 1/4-inch shank diameter and a 3.1-inch overall length, with a minimum bore diameter of 0.33 inches. Coolant-through capability supports chip evacuation and heat management during deeper or interrupted cuts. Machinists and toolroom technicians working on precision bore finishing will find this bar suited to close-tolerance work.

This boring bar is intended for internal diameter turning and facing operations on metals and engineered materials. The A04F-SCLCR 2 geometry targets 90-degree lead-angle cuts, making it effective for square-shoulder boring and facing in a single setup. Typical applications include production turning environments and job-shop operations where indexable insert tooling is preferred over solid-carbide boring bars for cost-per-edge efficiency and setup flexibility.

Key Features

• A04F-SCLCR 2 toolholder style supports 90-degree boring and facing operations
• Minimum bore diameter of 0.33 inches enables work in small internal diameters
• Right-hand cut orientation for standard lathe spindle rotation
• Compatible with 50-1100 series indexable inserts
• Coolant-through design aids chip removal and tool life in continuous cuts
• Compact 3.1-inch OAL fits tight turret and toolpost clearances

Compatibility

Accepts 50-1100 series indexable inserts. Designed as an OEM-style indexable boring bar for CNC and manual turning centers requiring a 1/4-inch shank with A04F-SCLCR 2 toolholder geometry.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the shank fully within the tool block or turret bore to the recommended clamping depth before engaging the workpiece. Power down or engage the E-stop on the machine before changing inserts or repositioning the bar in the holder. Verify insert seating and screw torque according to the insert manufacturer specification before resuming cuts.