An ER Tap Collet is a specialized ER-series collet designed specifically for tapping operations. It features a square drive or torque slot for positive torque transmission, preventing tap slippage and ensuring accurate thread depth and pitch in CNC machining centers and tapping machines.
An ER Tap Collet is a specialized ER-series collet designed specifically for tapping operations.
Unlike standard ER collets, ER tap collets include a square drive / torque slot to positively transmit torque, preventing tap slippage and ensuring accurate thread depth and pitch in CNC machining centers and tapping machines.
Key Features
ER Tap Collet – Exact Dimension Table
|
ER Size |
Tap Size Range |
Square Drive (Across Flats) |
Collet OD (mm) |
Length (mm) |
|
ER16 |
M3 – M6 |
2.2 – 4.9 mm |
17 |
27 |
|
ER20 |
M4 – M10 |
3.4 – 7.9 mm |
21 |
31 |
|
ER25 |
M6 – M14 |
4.9 – 11.0 mm |
26 |
35 |
|
ER32 |
M8 – M20 |
6.2 – 15.0 mm |
33 |
40 |
|
ER40 |
M12 – M30 |
9.0 – 24.0 mm |
41 |
46 |
Tap size depends on shank diameter and square size of the tap.
Construction Details
Types of ER Tap Collets
Applications
ER Tap Collet vs Standard ER Collet
|
Feature |
ER Tap Collet |
Standard ER Collet |
|
Torque Transmission |
Positive (Square Drive) |
Friction only |
|
Tap Slippage |
Almost Zero |
Possible |
|
Thread Accuracy |
Very High |
Medium |
|
Best Use |
Tapping |
General tool holding |
Supply Options
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