4MT – 3MT Hardened & Ground Morse Taper Sleeve

Description 4MT To 3MT Hardened & Ground Morse Taper Reduction Sleeve This precision Morse taper reduction sleeve adapts from a 4 MT (external) taper to a 3 MT (internal) taper, giving you flexibility to use MT3-shank tooling in machines with a larger MT4 socket. It’s a high-quality, hardened and ground component designed for durability, rigidity, and accurate seating. Key Features Taper Adaptation: Converts a 4MT machine spindle or socket to accept MT3 tools, enabling compatibility with a wider range of drilling, lathe, or reaming tooling. Hardened Construction: The sleeve is heat-treated to increase strength, wear resistance, and longevity — essential for regular workshop use. Precision-Ground Surfaces: Both the internal (MT3) and external (MT4) tapers are ground to tight tolerances, ensuring close contact and accurate seating. This helps maintain good rigidity and concentricity. DIN 2185 Style: Manufactured in accordance with common standards — quality sleeves like these offer high-precision adaptation. Versatile Use: Compatible with MT3 drill bits, centres, reamers, or any other tooling designed for MT3, when you only have a 4MT socket available. Why Choose This Sleeves? Save on Tooling Costs: Instead of replacing your MT3 tools or changing the spindle taper, you can adapt it — which saves money and preserves existing inventory. Maintain Accuracy: With its hardened and ground construction, this sleeve provides reliable performance and good repeatability, crucial for precision tasks. Durable and Safe: The hardened build helps resist wear, deformation, and damage, even with repeated use in a demanding workshop environment.