Common sizes and types of drill press arbors include:
1. **Morse Taper (MT) Arbors**:
- Sizes: MT1, MT2, MT3, MT4, and MT5.
- Usage: Commonly used in drill presses for holding drill bits and other tools. The taper allows for easy insertion and removal.
2. **Jacobs Taper (JT) Arbors**:
- Sizes: JT0, JT1, JT2, JT3, JT4, JT5, and JT6.
- Usage: Typically used to mount drill chucks onto the spindle of the drill press. The smaller end fits into the chuck, while the larger end fits into the spindle.
3. **Straight Shank Arbors**:
- Sizes: Vary based on diameter, commonly ranging from 1/2 inch to 1 inch.
- Usage: Used for applications where a straight shank is preferred, often in lighter duty drill presses.
4. **R8 Arbors**:
- Usage: Commonly found in milling machines but can be used in drill presses that accommodate R8 spindles. They provide a secure fit for various tooling.
5. **B16, B18, B22 Arbors**:
- Usage: These are European standard tapers used in some drill presses and are similar to Jacobs tapers in function.
6. **Keyed and Keyless Arbors**:
- Keyed: Require a key to tighten or loosen the chuck.
- Keyless: Allow for hand tightening, providing convenience and speed.
7. **Threaded Arbors**:
- Usage: Feature threads for securing the chuck or other attachments, often used in specific applications requiring a threaded connection.
These arbors are selected based on the specific requirements of the drill press and the type of work being performed, ensuring compatibility and optimal performance.