Collis Tool 78941 Tapping Adapter Size 2 Through Coolant

Product Description

The COLLIS TOOL 78941 is a Size 2 tapping adapter designed for use with quick-change tooling systems in machining and metalworking applications. It features a tap shank diameter of 0.562 inches and a tap square size of 0.421 inches, providing a secure, positive drive connection to the tap. Through-coolant capability allows coolant to flow directly to the cutting zone, improving tool life and chip evacuation during tapping operations. This adapter is installed by machinists, CNC operators, and toolroom technicians working with tapping heads or quick-change tap holders on machining centers, drill presses, and tapping machines.

This adapter is suited for production tapping environments where repeatable tool changes and consistent tap alignment are required. The quick-change interface reduces setup time between tap sizes. With a flange diameter of 1.88 inches, a projection of 0.35 inches, and a tap depth of 1.18 inches, it accommodates standard tap geometry for Size 2 applications in both job shop and production floor settings.

Key Features

• Size 2 tapping adapter with 0.562-inch tap shank diameter
• Tap square size of 0.421 inches for positive drive engagement
• Through-coolant design directs coolant to the cutting zone
• Quick-change compatible for fast, repeatable tool changes
• Flange diameter of 1.88 inches for stable seating in the holder
• Tap depth of 1.18 inches accommodates standard tap shanks

Compatibility

Designed as an OEM-style replacement or direct-fit component for quick-change tapping systems accepting Size 2 tapping adapters with a 0.562-inch shank diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. De-energize and lock out the machine before changing tooling. Ensure the adapter shank and tap square are clean and free of chips or burrs before seating. Verify through-coolant passages are clear and aligned with the holder before operation.