MT3 Adjustable Boring Head

Description

The Toyo Seiko MT3 Adjustable Boring Head is a precision tool designed for boring operations on milling machines or lathes. It features a Morse Taper No. 3 (MT3) shank for secure mounting on compatible spindles, commonly used in manual machining setups. The head has a 50 mm diameter body with a graduated scale on the adjustment dial, marked in 0.005 mm increments.

The boring head includes a 12 mm diameter tool holder, compatible with the four included boring bars, each with carbide tips. The bars vary in length (approximately 50-70 mm) and are designed for different boring depths and diameters, suitable for machining steel, cast iron, and non-ferrous materials. The head’s total length, including the shank, is 150 mm, and it weighs approximately 1 kg, providing stability during operation.

This used set shows signs of wear, including scratches and surface marks on the head and bars, with some carbide tips showing minor chipping but remaining functional. The adjustment mechanism operates smoothly, and the set is ideal for machinists needing a versatile boring solution for internal machining tasks. No additional accessories, such as a wrench, are included.

Features:

• Shank: Morse Taper No. 3 (MT3)
• Graduations: 0.005 mm on adjustment dial
• Tool holder diameter: 12 mm
• Total length: 150 mm (including shank)
• Weight: Approx. 1 kg
• Includes four boring bars
• Suitable for steel, cast iron, and non-ferrous materials