Professional for 16 years

Spring Collets Manufacturer

The national hotline

  +86 15907551665

ER collet size specifications and processing methods and installation skills of high precision collet?

2020-03-06 12:03

ER collet size specifications and processing methods and installation skills of high precision collet?


ER collet is also a kind of collet chuck. It is an auxiliary device used to fix workpieces. The collets commonly used in daily life include collets and clamping collets. Although the collet is small, it has very powerful functions. It can accurately locate the tools that need to be clamped, has a certain bearing capacity, and can increase the driving force of the machine. It can quickly clamp and release the working state. In the parts.


What are the clamping ranges of the ER collet? ER standard precision collet dimensions are as follows:


ER8 high precision chuck clamping range: Φ1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5



ER11 high precision chuck clamping range: Φ1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7


ER16 high precision chuck clamping range: Φ1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10


ER20 high precision chuck clamping range: Φ1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11 , 11.5, 12, 12.5, 13


High-precision collets require concentricity as high as 0.02. There are many methods for machining collets. The simpler method is to first make a hole, and then use a saw blade to make a cross groove to two-thirds of the collet axial direction. How should the high precision collet be processed? Now we recommend a machining method of high precision collet:


1. The outer circle of the clip is the outer part of the car and the tapered surface (remaining grinding amount of 0.5mm must be finished). The holes are dried to the size of the drawing except for the 0.5mm grinding amount of the holes that must be matched.


2. Drill the end of the slot with 3 small holes evenly distributed.


3. Slot milling but not milling, leave 4 ~ 5mm on the end face.


4. deburring.


5. quenching HRC45, blue.


6.chamfered at both ends (for technology).


7. Grind the outer circle and tapered surface to the size at the chamfers at the top and bottom ends.


A collet (chuck) is a cylinder-shaped fixture used to fit on a milling machine to restrain a drill or a milling cutter. It is a fixing device used to fix and strengthen the parts that need to be modified. The following installation tips need attention:


1. Before installing the collet chuck, the collet chuck must be installed in the lock nut, and then the lock nut with the collet chuck lightly screwed on the shank, adapter or spindle.


2. In order to obtain excellent performance, before installing the collet, be sure to clean the spring collet, the threaded part of the lock nut, the positioning surface, and the tapered surface.


Shenzhen Lonnz Tools Co., Ltd., as a professional high-precision collet maker, has been committed to creating high-precision and high-quality collet products, CNC composite machining, 36 full processes, three salt bath heat treatment, screw teeth Grinding and forming, with guaranteed accuracy, can provide auxiliary design of chuck and peripheral accessories, one-stop purchase! We use imported machinery to process and select high-quality raw materials to ensure that each spring collet fixture product is of high quality, and strive to become your trusted collet brand.


High precision ER collet size specification table

High precision ER collet size specification table