Precision Expanding Mandrel Set 1/2"-1", 5 Mandres & 5 Sleeves

Product Information

Expanding mandrel has a slightly complex construction. It has a mounted bush over a tapered arbor, which has a tapered hole with three longitudinal cuts. Two slots are cut nearly through, while the third cut is of full length. This construction allows the expansion of split bushing within a limit. Gang mandrel is similar to a step mandrel, except it allows multiple jobs to be machine simultaneously. Its ability to handle multiple workpieces simultaneously reduces the machining time and is thus used in mass manufacturing. Collar Mandrel A mandrel is a cylindrical, tapered rod (shaft or a spindle) that helps hold or shape the workpiece. Mandrels are typically made of steel and are used in hollow jobs on lathes, industrial, and jewelry machines. They shouldn’t be confused with an arbor, which holds tools rather than workpieces. Expansion bushings, if used, should be cleaned and cared for in the same manner as a normal mandrel. These models utilize the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels

A solid mandrel is a cylindrical, tapered bar whose one side is larger in diameter than the other. It is the simplest type of mandrel generally available in most machine shops. It is also known as the plain mandrel.

Hardinge

The screwed mandrel has a fixed collar and an open threaded end to allow screwing threaded workpieces for machining purposes. This mandrel type is used when the inner part of the workpiece is threaded. Cone Mandrel The expanding mandrel can accommodate different diameters of workpieces ranging from 0.5m to 2mm. This range can be increased with a change in brush size. Ring mandrels Forging and reshaping: Ring mandrels (also called triblets) are used in the jewelry industry for forging and reshaping rings on them.

Mandrels make the workpiece rotate around the center only, increasing the jobs’ accuracy. Without proper support of the workpiece, there’s a chance for the job operation (e.g., drilling, boring etc.) to fail.

PTG produce and supply precision expanding mandrels capable of automatic clamping in component bores, achieving the highest accuracy and holding power to resist the cutting forces imposed on the work piece.