ISO Tool Holders

ISO Tool Holders
ER11 Standard Collets

 

 Taper  D1  g  d1  D5  L1  f  e  b  a
 ISO30  31.75  M12  13  50  68.4  16.2  8  16.1  1.6
 ISO40  44.45  M16  17  63  93.4  22.5  10  16.1  1.6
 ISO50  69.85  M24  26  97.5  126.8  35.3  12  25.7  3.2

 

ER11 Standard Collets

 

Taper Size:

 

Taper size should be chosen with realistic considerations. When selecting cutting parameters, keep in mind that a machine with a 30 taper spindle will not achieve the same heavy cuts or use cutters as large those on a 50 taper machine. Form B Coolant Spindles are now running at higher rates — quickly burning seals, making it difficult to seal coolant as it passes through the drawbar. One option is to direct the coolant around the spindle bearings and enter through the spindle face and toolholder flange.

 

Pull-Back System:

 

When troubleshooting a problem, assume that the toolholder is at fault is not the correct course of action. The spring pack, drawbar, gripper, and retention knob are major components for the successful operation of a machine tool because wear or breakage of these parts is a major concern.

 
  • Spring pack — Can become weak or out of adjustment. This can cause chatter during a milling operation, which causes damage to the adapter taper, spindle taper, cutter, or workpiece.
  • Gripper fingers — If worn, they may not grip the retention knob correctly, enabling the adapter to move, resulting in chatter and damage to the adapter.
  • Retention knob — A worn or incorrect retention knob will not enable proper gripping for pull back on the taper. This is a very serious safety hazard due to the movement of the adapter. Using an improper knob may result in a lack of any detectable gripping force.
 

Form B Coolant:

Spindles are now running at higher rates — quickly burning seals, making it difficult to seal coolant as it passes through the drawbar. One option is to direct the coolant around the spindle bearings and enter through the spindle face and toolholder flange.

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