Harlingen ER-20 3mm Spring Collet, 3.0-2.0mm - 9710-4019

Harlingen ER-20 3mm Spring Collet, 3.0-2.0mm - 9710-4019 

• HARLiNGEN® ultra precision ER collets are made of high performance, special Grade GCrlS bearing steel that has been fully hardened and precisely ground by experienced craftsmen.
• The powerful clamping ability and durability are ideal for boring, milling, reaming, drilling and tapping as well as grinding operations in high precision machining.
• Runout is ≤0.008mm.
• Your choice for secure and rigid holding of drills of any size while retaining the highest concentricity within the range.
• 8 degree taper design enables maximum gripping power.
• All slits are spaced and ground evenly.
• DIN6499B
• D: 21.0mm
• L: 31.5mm
• Collapsibility: 1mm

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