Short nose spindles:
Advantages:
Good rigidity: due to the short distance, short nose spindle can improve the rigidity of the spindle, usually can improve the rigidity of about 10%.
Suitable for heavy cutting: short nose spindle can reduce the vibration of heavy cutting, suitable for high intensity machining.
Good cooling effect: short nose spindles are usually equipped with ring spray design, which effectively improves the cooling effect of the spindle, so that the spindle can still maintain low temperature and high accuracy at high speed.
Protection device: short nose spindles are usually equipped with labyrinth device and labyrinth blowing device to effectively protect the spindle.
Disadvantages:
Unsuitable for concave parts machining: due to the short distance, short nose spindles are not suitable for concave parts machining.
Long nose spindles:
Pros:
Suitable for curved workpieces and boring of long and thin holes: due to the long reach, long nose spindles are easier to machine the concave parts of the workpieces and are more suitable for curved workpieces and boring of long and thin holes.
Wide range of application: long nose spindles are suitable for deep and shallow cavity machining with high flexibility.
Disadvantages:
Poor rigidity: due to the long extension, the rigidity of the long nose spindle is poor, and it is not suitable for high intensity heavy cutting.
Limited machining space: the design of the long nose spindle makes the machining space relatively small, which may affect the machining of some complex workpieces.
When buying used equipment, the choice of machining centre to choose a short nose spindle or long nose spindle is to choose the most suitable for their needs.
