APRICA 8PC EXPANDING ARBOR SET - 1/4" - 1.1/4" 

Sizes include: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4.

• By placing in your machine & expanding the arbor, you can machine the arbors to the precise diameter & length for your job

• Marked with Laser Machine individual sizes on each arbor.
• Supplied with Required Allen Keys & comes on wooden stand.

Expanding arbors are used for holding and supporting workpieces during machining operations such as turning, drilling, grinding, and milling. It consists of a tapered shaft with several segments or fingers that can be expanded by turning a central screw or nut.

To use an expanding arbor, you insert the arbor into the workpiece and tighten the central screw or nut. As you tighten the screw, the segments or fingers of the arbor expand, creating a secure grip on the inside diameter of the workpiece.

Expanding arbors are commonly used in metalworking and woodworking to hold parts such as gears, pulleys, and shafts. They are also used in the printing industry to hold printing plates during the printing process.

Overall, the expanding arbor is a versatile tool that can help hold workpieces securely and accurately, allowing for precision machining and manufacturing.