Collet ER 40

• ER40 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.

The proper way to fit RR ER40 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: ER40 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