The importance of the elastic collet as a transmitter of force and precision in the machining system is indisputable.
Even when machining workpieces with relatively low requirements for open roughness and precision,
the accuracy of the collet should not be ignored.
Now the vast majority of spindle dynamic balance for G1, taper hole runout 1-2u, while processing is the whole system at work.
Not to mention the impact on the yield of the workpiece and tool life, the collet good or bad on the spindle life is also critical.

With the improvement of dimensional accuracy and cylindricity level,
the clamping force of the collet on the tool is linearly increased and the clamping force can be more uniformly transferred to the tool,
and at the same time, improve the stability of the tool, the service life and the machining effect of the workpiece.
With the improvement of the outer cone angle precision and surface roughness level,
the contact rate between the cartridge and the inner cone of the toolholder increases linearly,
and the degree of uniformity of clamping force transmission increases linearly,
which ensures that the tool is subjected to uniform force, avoids deformation due to excessive localized stress, and improves the service life of the tool.

 1.The influence of different materials on the service life of the collet:
After salt spray test and wear resistance test on manganese steel, spring steel, chrome steel, stainless steel and other alloy steels,
3Gcr13M0 stainless steel, which is specially tempered, has both excellent corrosion resistance and abrasion resistance,
and it can persistently maintain the stability of precision.

2. Collet radial runout on tool life and machining effect: In fact, radial runout not only affects the life of the tool but also directly affects
the machining precision and surface effect.

3. The impact of the dynamic balance of the cartridge on the machining effect:
a good dynamic balance not only ensures the machining effect and stability, but also effectively extends the spindle, shank and tool life.

4. The influence of the bore size, cylindricity, taper angle accuracy and roughness on the clamping force and tool life.