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ER - Collet Chucks

PIONEER ER Collet Chucks are "Best In Class" Performance and True Dynamic Balance
Premium Precision 0.0001” 
  • Runout taper to bore within 3 Microns (0.0001”) T.I.R.
Coolant Thru
  • Coolant Thru the Center
  • DIN B Flange Coolant Available
  • Rubber Seal & Steel Seal Collets Available
Dynamically Balanced
  • 30, 40 & HSK63A - G6.3 @ 20,000 RPM
  • 50 & HSK100A - G6.3 @ 15,000 RPM
  • Collet Nuts Dynamically Balanced Individually for Optimal Performance
ISO AT3 Taper Tolerance
  • Tapers are ground better than AT3 for optimal T.I.R.
Interchangeable
  • Meets and Exceeds all DIN and Industry Standards


Bearing Nut, Double your Grip Force!
ER32 standard nut locked at 100 ft/lbs using a 1/2” carbide test arbor, the arbor slips at 60 ft/lbs of radial torque, using a Pioneer Bearing Nut the arbor slipped at 
130 ft/lbs of radial toque. The average improvement on ER16 thru ER40 was 75% to 125% increase in radial holding power. 

Accuracy "is" Everything - New GERC Collets

GERC are available in 2 versions,
  • GERC-B 5 Micron TIR @3 Times Diameter
    • 5 Microns = 0.0002”
  • GERC-HP 2 Micron TIR @3 Times Diameter (Blue Ring)
    • 2 Microns = 0.000079”

Standard Collets
Available Collets
Steel Sealed Collets
Available Collets
 10 Micron
 SSER16
 SSER20
 SSER25
 SSER32
 SSER40

Tap Collets
Available Collets
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