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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