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MT2 tool holders are categorized based on various tools they hold. Some popular MT2 tool holder types are as follows.
MT2 Turning Tool Holder:
An MT2 turning tool holder is utilized for turning operations. Usually made of solid carbon steel, this tool holder can maintain strong clamping force, resisting high spindle torque during the machining process. An MT2 turning tool holder can also adapt various turning tools.
MT2 Drill Chuck Holder:
The drill holder chucks the drills, fixing them to the lathe machine. It is usually composed of three or four synchronized jaws, which can evenly distribute the clamping force to the drills. The drill can be placed freely in the holder, making it applicable for different sizes. An MT2 drill chuck holder is suitable for dealing with drill bits with a diameter range from 1/16" to 5/8".
MT2 Live Tool Holder:
The live tool holder in the lathe can support drilling and tapping operations. It is called "live" because its spindle rotates with the spindle of the lathe machine. The rotation comes from the work spindle driving mechanism, which makes the cutting process more precise. The holder can fit various tool bits with different shapes and sizes, improving efficiency by reducing the need to change the tool frequently.
MT2 Boring Tool Holder:
It is specifically designed for boring operations. The holder can fix boring bars of various lengths and diameters, especially the internal ones.
MT2 Tap Holder:
This type of holder is especially for tapping operations. Usually, it has a friction clutch, which can allow the tap to auto-reverse after completing the thread. Thus, it can cut threads with high precision and remain unbroken.
Some commonly used specifications of the Morse taper tool holder are as follows, along with the machines they are compatible with:
MT2 Drill Bit
The MT2 drill bit holder features a taper angle of 2.059 degrees, a tip diameter of 27.19mm, and a length of 152.4mm. This is the most common holder used for medium-sized drills.
MT3 Tool Holder
The MT3 tool holder has a taper angle of 2.059 degrees, a tip diameter of 38.1mm, and a length of 182.88mm. It is commonly used in lathes and drill presses. The larger size makes it more suitable for heavier machinery.
MT4 Tool Holder
As the name suggests, the MT4 tool holder is larger than the others. It has a taper angle of 3.2 degrees, a tip diameter of 48.26mm, and a length of 215.9mm. This holder is not usually found on drills but is often used on lathes and CNC machines.
MT5 Tool Holder
The MT5 tool holder is even larger, with a taper angle of 3.2 degrees, a tip diameter of 60.33mm, and a length of 76.2mm. It is only found on large lathes that work with heavy workpieces requiring more robust drive systems.
The maintenance required for the MT2 tool holders is very simple. Holders are heavily used in machining processes and are quite subject to wear and tear. The only way to ensure their longevity and smooth performance is to clean them periodically.
Cleaning the tool holder entails removing it from its assembly and getting rid of any dust or debris that has settled around the taper. It is best to use a wire brush or a clean dry cloth to wipe down the tool holder and eliminate any debris. Never use water to clean tool holders, as this may cause rusting or damage to the tool holder.
If debris gets stuck in hard-to-reach places, it is best to use an air compressor to blow it away. Be careful when reinserting the tool holder in the machine spindle. If unsure, it is best to consult with an expert who knows the mechanism of the machine well.
MT2 tool holders are applicable in diverse industrial scenarios because they are designed to meet different functional needs when holding and supporting tools.
Carpentry and woodwork lathes
In carpentry and other woodwork industries, an MT2 tool holder is used as the workpiece spindle on which woodworkpieces that have an MT2 taper are mounted. This allows for various woodwork operations like turning, grooving, drilling, and shaping.
Metal lathes
In most metal machining applications, an MT2 tool holder is used to hold various cutting tools. Most of these tools include reamers and drills, among others. They are designed to facilitate precise machining operations, thereby ensuring that metal workpieces achieve the desired quality.
Assembly automation
In assembly automation, the MT2 tool holder is used in fixtures and automated assembly systems. Here, they support the accurate positioning of parts during assembly. This ensures that assembly operations are conducted with efficiency and precision.
Gear cutting machines
Some machining industries use the MT2 tool holder to hold the tools when doing rigorous machining operations, such as gear cutting or milling. This allows the machining professionals to achieve a high level of precision when machining the gears.
Tool holder systems
In the tool holder systems or as part of the quick-change tooling setups, the MT2 tool holders are used to allow fast and easy tool changes. This enhances flexibility and reduces downtime during machining operations.
When purchasing MT2 tool holders, it's important to get the right combination of tool holder and tool for the specific application. Some of the tips to keep in mind when buying MT2 tool holders include:
Q1: What does the ''MT'' stand for in an MT tool holder?
A1: MT represents Morse taper, which is widely utilized in various machining equipment and tools.
Q2: What are the differences between an MT and a PMT or double-taper tool holder?
A2: The MT2 tool holder, also known as the Morse Taper 2, is the intermediate size of the taper family. MT1 is the smaller version, while MT3 is more prominent. Some machines use a double taper for better gripping, which includes the PMT or parallel double taper.
Q3: What machines use MT2?
A3: Entry-level lathes and some benchtop mills mostly utilize the MT2.
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