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

Product Information

Collet style mounts in any machine or fixture that accepts 5C, 16C or 3J collets using existing spindle or adapter These models utilize the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels A great option for low/medium-volume production. For high-production environments, use the standard KEM series Bullring mandrels:This mandrel consists of a live center with interchangeable rings that can accommodate a wide variety of large-diameter parts. 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

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. 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. 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 MandrelMandrels 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. The step mandrel isn’t plain like plain mandrel but has step collars of different diameters fitted with it. This allows it to be used for various diameters of workpieces. Step mandrel is used when the inner portion of the workpiece is in the form of steps, which makes step mandrel the right choice. Gang Mandrel 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.

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. The lathe dog should be secured to the end of the mandrel rather than on the smooth surface of the mandrel taper. A ring mandrel, or a triblet, is a cylindrical, tapered tool used in forging, shaping, and reshaping workpieces (mostly rings). Ring mandrels are mainly used in the jewelry industry. They can also be used for measurements if they have ring sizes on them. Other mandrels 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. 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 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. 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 also have specialized types and find their use in filament winding, the production of steel cores, and double-reed musical instruments. Why do we need 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. There is a slot at both ends of the mandrel. The larger diameter end has a slot for the lathe dog, while the other has a protected center hole for the dead center. This mandrel type is used when the workpiece is plain and is available in different sizes from 44m to 450mm. Step Mandrel 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 We provide a wide selection of Collet Style Expanding Mandrels, manufactured by industry leading partner Hardinge, offering solutions to difficult machining problems for turning, milling, grinding, assembly and automation applications. We guarantee exact workpiece lengths, even for particularly long parts, as our bespoke line of mandrels have extremely high stability.Expansion bushings, if used, should be cleaned and cared for in the same manner as a normal 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. 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