MT3 to MT4 Morse Taper Reducing Adapter Sleeve, 45# Steel Lathe Milling Accessory for Drill Bits

Description: These adapters are made from steel, hardened and tempered, precision ground inside and outside for high concentricity. Taper shank allows the tool to be inserted directly into the machine's spindle to facilitate high- applications such as large cut diameters. Specifications: Material: 45# steel Type: MT1 to MT2, MT2 to MT3, MT3 to MT4, MT4 to MT5(Optional) Hardness: 50 HRC Type D(mm) d(mm) L(mm) External Taper (MT.NO.S) Internal Taper (MT.NO.T) Inner Hole Length(mm) Weight(g) MT1 to MT2 17.78 12.065 92 2 1 56 89 MT2 to MT3 23.825 17.78 112 3 2 67 174 MT3 to MT4 31.267 23.825 140 4 3 84 350 MT4 to MT5 44.399 31.267 171 5 4 107 1000 Package Included: 1 x Taper Drill Sleeve Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

• High Hardness & Durable Material: Made from 45# steel with overall quenching treatment, hardness reaches 50 HRC, providing strong impact resistance and extended service life.
• Precision Ground Surface: Inner and outer surfaces are precision ground to ensure high concentricity and smoothness, achieving accuracy of 0.015mm for stable operation.
• MT3 to MT4 Size Specification: External taper MT4, internal taper MT3, suitable for using a MT3 shank tool in a MT4 spindle bore, expanding machine tool compatibility.
• Wide Application: Ideal for use with lathes, milling machines, drill presses, and CNC machines to hold taper shank drill bits, reamers, and other cutting tools.
• Easy to Use & Store: Simple to install and remove, compact design allows for convenient storage and between different taper sizes.