- ER8 Collet follows DIN 6499 standard
- The standard ER collet is the most widely used clamping system in the world
- Made from EN-47 Alloy spring steel for spring action and fully hardened
- ER Standard Precision Collet with 10 microns run out
- Install into an ER collet chuck or holder to tightly grip round-shank tool bits in milling machines
Dimension Chart for ER8 Collets:
NOTE: The size indicated on the collet is the largest size it can hold and can be collapsed smaller within its collapse range of (0.9 mm). For example, ER40 6 mm can grab a round shank from 6 mm diameter to 5.1 mm diameter.
The proper way to fit RR ER Collet to a suitable nut:
- The Collet must always be inserted into the nut before setting the tool into the collet
- The collet is fitted inside the nut by applying slight pressure A
- It is removed by applying Pressure B to the collet
- Never tighten the chuck without a correct size tool shank being present in the collet
Application: ER collets are ideal for many machining operations such as
- Carbide End Mills
- ER Collet Chucks (BT/CAT/HSK/ISO/MT/R8/SK/Straight Shank)
- ER Collet Chuck Nuts
- ER Collet Chuck Spanners
- Pull Stud (Retention Knob)
- Locking Fixtures
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