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

Product Information

These models utilize the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels Hardinge is the expert in precise part length control, pioneering the Dead-Length 5C and 16C collets for high-production manufacturing. Our Sure-Grip Expanding Collet Systems feature built-in part length control with a double-angle design, ensuring precise workpiece lengths by securely locating them against the arbor face or a machineable work stop. This stability results in heavier cuts, improved surface finishes, and tighter tolerances, making it easy to machine long parts. We also offer custom Sure-Grip Collets for special spindle, sub-spindle, mill table, Swiss, and multi-spindle machine applications. You can even get splined or serrated surfaces for unique grips or recessed draw-plug styles for short gripping challenges.

Mandrels used for holding the workpiece in place have different types and find their uses in the industrial, lathe, and woodworking machines. Following are the types of mandrels used for holding the workpiece: Solid Mandrel The line is standardised on most common gripping ranges and spindle types, and the company maintains a database of machine tool spindles and drawtubes to enable customization of drawtube connectors. Additionally, Kitagawa Europe offers a number of specialized systems to fit each company’s individual needs. Kitagawa Europe can supply systems with multiple expanding sleeves or mandrels that can support workpieces with IDs as large as 635mm. Although typically used in turning or grinding applications, our expanding mandrels can be adapted for use on milling machines with special fixtures as well. The expanding mandrels can be used to grip any workpiece that has a suitable inner bore diameter and which lends itself to being completely machined on the outside. The suitability of a workpiece’s inner bore is application-specific; We generally advise that there be, at most, a 3:1 length-to-diameter ratio of the inner bore. However, it is possible to accommodate higher ratios depending on a variety of factors, such as the type of material being machined or the aggressiveness of the cut. This article aimed to provide general information regarding mandrels. Mandrels are either used to hold a workpiece or reshape it. Specialized mandrels may be for specific purposes. 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.

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 Forging and reshaping: Ring mandrels (also called triblets) are used in the jewelry industry for forging and reshaping rings on them. Collet style mounts in any machine or fixture that accepts 5C, 16C or 3J collets using existing spindle or adapter Mandrels are typically slightly tapered to provide support during machining, so a solid frictional grip between the mandrel and the hole wall is in place when pressed into a previously machined hole. Side-actuated with an included square-drive key means that this unit can accommodate parts with blind bores as well as those with thru-holes.

The collar mandrel is basically a lighter plain mandrel with two fixed collars attached at both ends. The fixed collars fit firmly on the workpiece. Generally, this mandrel is used for holding workpieces with diameters above 100 mm. Screwed Mandrel Several forces act on the workpiece to make it deflect away from the center, which makes the usage of mandrels necessary.Gripping a workpiece by its inner diameter (ID) rather than its outer diameter (OD) is a workholding option that many job shops fail to consider when turning or grinding parts. However, this technique offers a number of advantages, especially in the machining of workpieces with complex surfaces. Kitagawa Europe produces a series of CNC expanding mandrels designed for a range of spindle types that offer more flexibility in workholding than people might think. A Gang mandrel has a fixed collar at one end and a movable collar threaded at the other end. This type of mandrel allows hollow workpieces to be placed between the fixed collar and the movable collar, followed by tightening it with a washer nut. 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 Universal location spigot mount enables this ID workholding system to be easily moved from machine to machine as jobs require.

Mandrels used for holding make the workpiece rotate around the center only, increasing the job’s accuracy. Meanwhile, the ring mandrels are used to forge or reshape rings. 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. These models utilise the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels. The Cone mandrel has a fixed cone at one end and a sliding cone at the other. The sliding cone has threads and can be adjusted or removed using a nut. This type of mandrel allows it to hold different sizes of workpieces between the two cones. Expanding Mandrel Expanding mandrels are especially useful when a workpiece requires secondary machining operations because these devices enable external diameters to be turned in a single operation, increasing concentricity between the two operations. They also prevent damage to previously machined surfaces, which is why expanding mandrels are often used on lathe sub spindles. The access they provide to a workpiece’s entire outer surface also makes them well-suited for use on lathes with live tooling.

Arc Euro Trade Ltd cookie overview

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. 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. A great option for low/medium-volume production. For high-production environments, use the standard KEM series