The standard ER collet is the most widely used clamping system in the world. 
Made from Alloy spring steel and fully hardened these ER collets are ideal for many machining applications including boring, milling, reaming, tapping and grinding.  

Maxx Tooling offer 3 Performance versions of ER Collets in ER32 and ER16. Our ER collets are European made (Not Chinese) and produced with the highest level quality for a reasonable cost.

Series MX1 Upper precision ER collet level, according to DIN 6499 Class 1 max. 10 micron (0.00039") run out.

Series MX2 Precise and economic ER Collet, according to DIN 6499 Class 2 max 15-20 micron (0.00059") run out.

MXP TOP level ER Collet Accuracy with max. run out under 5 micron(0.00019"), suitable for very high precision , tight tolerance , high speed applications.

All Maxx Tooling ER collets
… are 100% run out checked
….are not deformed when clamped to their minimum diameter.
….do not break with small shocks.
… are friendly to your toolholder in term of their smooth surface free of sharp edges and their exact angle geometry to suit the chuck taper and its clamping nut.

The different precision levels are distinguished with different colors of caps on the plastic collets boxes. The bodies of the plastic packs are transparent.

er colletTransparent cap : MX2

Yellow cap : MX1

Red cap : MXP

Green is designated for Tapping ER Collets