Tell us about the purpose of the cartridge, trident, faceplate.

The faceplate is designed for clamping flat workpieces of large diameter and short length.
The chuck is used to fix small short workpieces in it. The workpiece from one end is processed into a cone, screwed with this end into the chuck and fastened with a screw.
The trident serves to secure long workpieces, the second end of which is pressed against the rear center.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.