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How to use the collets: Do you need to buy many sizes of ER collets?

2020-05-21 11:05

How to use the collets: Do you need to buy many sizes of ER collets?


The collet can be used for positioning and clamping of turning workpieces, and it can also be used for positioning, clamping or many other occasions on tools, grinding and milling workpieces. Collet chuck (collet) is a type of cylindrical fixture used to hold drills or milling cutters on a milling machine. How to use the collets: Do you need to buy many sizes of CNC ER collets?

High precision set ER spring collets

High precision set ER spring collets




1. The spring collet is very suitable for processing small-diameter workpieces;


2. The clamping time of the workpiece by the spring collet is very short, which can realize fast loading and unloading;


3. The replacement time of the spring collet is very short, which can realize the rapid replacement of different sizes of fixtures;


Reasonable selection of the clamping diameter size of the spring collet can ensure that the spring collets produces the maximum clamping force on the workpiece and achieves the best clamping state, thereby ensuring high quality and high precision of mechanical processing. If the diameter of the inner hole of the collet is too large, the workpiece is only clamped by the orifice of the collet when the collet is closed, which may cause a geometric mismatch between the outer circle of the workpiece and the inner hole of the collet. Therefore, the clamping force is reduced. If the diameter of the inner hole of the spring collet is selected to be too small, only the inside of the inner hole of the chuck is in contact with the workpiece when the chuck is closed. Although the clamping force is increased, it will cause different axes of the collet and the workpiece.


A spring collet of a specific size can only clamp and position workpieces of the corresponding diameter. A company specializing in collet chucks recommends that the applicable range of collet chucks is ± 0.0254mm. The CNC ER collet is composed of two parts, one part is the collet body, the other part is the clamping block, and the two are connected by screws.

er set spring collet

er set spring collet



If you want to do smaller work, you need a smaller diameter range of collets. The following figure is the most popular and commonly used size and clamping range of each set of er spring chucks. LONNZ spring collet manufacturer is the company's main product with elastic collets, CNC lathe collets, pneumatic collets, tap collets, drill collets, non-standard collets, rubber collets, hardware tool processing Controllable period, ready to use, quality assurance.


Specification size and clamping range of er spring collets


Specification size and clamping range of er spring collets



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