ER-SPR-AA :  DIN 6499 'AA' ultra precise ER spring collets with HARD TOUCH coating which increases wear resistance, improves corrosion protection, prolongs the surface finish quality and maintains longer run-out accuracy.  
 
 
CONCENTRICITY .0002 HARDNESS 46-48 SURFACE FINISH N5
  Designation
SS		 d2
min		 d2
max
  ER11 SPR 4-5 AA  ER11  4.00  5.00
  ER11 SPR 5-6 AA  ER11  5.00  6.00
  ER16 SPR 4-5 AA  ER16  4.00  5.00
  ER16 SPR 5-6 AA  ER16  5.00  6.00
  ER20 SPR 4-5 AA  ER20  4.00  5.00
  ER20 SPR 5-6 AA  ER20  5.00  6.00
  ER25 SPR 4-5 AA  ER25  4.00  5.00
  ER25 SPR 5-6 AA  ER25  5.00  6.00
  ER32 SPR 4-5 AA  ER32  4.00  5.00
  ER32 SPR 5-6 AA  ER32  5.00  6.00
  ER40 SPR 4-5 AA  ER40  4.00  5.00
  ER40 SPR 5-6 AA  ER40  5.00  6.00

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