ER8 | ER Collet

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Bore Grip Range: 0.5 - 1.0 mm
₹ 36575 excl. GST ₹ 665

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  • 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:

ER8 ER Collet RR Brand Dimension Chart

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

    • Boring
    • Milling
    • Reaming
    • Tapping
    • Grinding

    Suitable Products:

    • 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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