Accupro 587110 Tapping Adapter 1-1/4 in Size 3

Product Description

The ACCUPRO 587110 is a quick-change tapping adapter designed to connect a Size 3 tap to compatible tapping heads and holders. It accepts taps with a 1-1/4 inch tap size and features a tap shank diameter of 1.021 inches. The quick-change design allows for fast tap swaps without removing the holder from the spindle, reducing setup time in production and job-shop environments. Machinists and tool-room technicians use this adapter to maintain rigid, concentric tap alignment during through-hole and blind-hole threading operations on CNC machining centers and manual knee mills.

This adapter is suited for use in metal-cutting applications where consistent thread quality and repeatable setup are required. Typical installations include production tapping on steel, aluminum, and cast iron workpieces. The Size 3 adapter size corresponds to standard industry tapping head sizing conventions and is appropriate for the larger tap range covered by the 1-1/4 inch tap size designation.

Key Features

• Quick-change interface allows fast tap replacement without removing the holder from the machine spindle
• Tap size of 1-1/4 inches accommodates larger-diameter threading operations
• Tap shank diameter of 1.021 inches provides a precise, secure shank fit
• Size 3 adapter classification matches standard tapping head sizing for this tap range
• Compact, single-unit package suitable for individual tool-crib stocking or direct job use

Compatibility

Designed as an OEM-style replacement or direct-fit tapping adapter for use with Size 3 quick-change tapping heads that accept a 1-1/4 inch tap size and a 1.021 inch tap shank diameter.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and de-energize the machine spindle before installing or removing the adapter. Ensure the tap shank is fully seated and the quick-change locking mechanism is fully engaged before beginning any threading cycle. Follow the machine tool manufacturer's guidelines for spindle speed and feed rate when setting up the tapping operation.