Technical Information

TG and ER Collet Assembly/Disassembly Instructions
• First, place the locknut with nose ring over collet nose. Apply force on the
locknut until it snaps into place. The nose ring is now seated into the collet
undercut and should turn freely.
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• To remove the collet from the locknut, hold the nut firmly in one hand and
apply a bending action on the collet with the other hand until the collet snaps
free from the nose ring.
NOTE
Inserting the cutting tool less than 2/3 the gripping length into the collet can permanently damage the collet. The full length of the gripping bore needs to be
maintained to achieve maximum accuracy and safety. Collet accuracies are based on size-for-size conditions. Using the collapsible range can influence the
accuracy and gripping powers. Never try to stretch collets by clamping oversized cutting tools.
L = 50mm (1.969")
D = 18–28mm (.71–1.02")
L = 50mm (1.969")
D = 10–18mm (.39–.71")
L = 25mm (.984")
D = 6–10mm (.24–.39")
L = 16mm (.630")
D = 3–6mm (.12–.24")
L = 10mm (.394")
D = 1,6–3mm (.06–.12")
L = 6mm (.236")
D = 1–1,6mm (.04–.06")
ER-Style Collet TG-Style Collet
TGHP (precision) =
DIN 6499 Class 1
Maximum Runout Error
0,008mm
(.0003")
0,010mm
(.0004")
0,015mm
(.0006")
TG (standard) =
ER — DIN 6499 Class 2
Technical Information
Collets
0,020mm
(.0008")
M103
Technical Information