The ER-8 Straight Shank Collet comes with a collet nut for greater clamping, and can easily be used with a round or flatted shank. This collection is perfect for all needs and uses.

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Provides approximately 2:1 grip advantage. Wide clamping range for all drilling applications. ER8 and ER11 0,5mm (.020") range of collapse. ER16, ER20, ER25, ER32, and ER40 1mm (.040") range of collapse. Available in both metric and inch sizes. Manufactured to DIN 6499 Class 2 accuracy; see page [REFERENCE].

Each ER8 collet has a range of .020 inches (0.5mm). The size indicated on the collet is the largest size it can hold and can be collapsed smaller within its collapse range of .020inches (0.5mm). For example, ER8-3mm can grab a round shank from 3mm diameter to 2.5mm diameter. Please refer to our ER8 Collet print for general ER8 dimensions.

After creating a solution just choose the Feeds & Speeds icon and our system will provide recommendations. You can customize the information by adding your machine and specifications or make adjustments using the sliders. Create Solution to find the perfect compatible parts for your tool. ER™ • Straight Shank • Inch - SS038ER08500 - Shop Online.

These holders have a straight shank and accept the noted ER collets (see the table above for the diameter of the shank and shank length). In addition this range is fitted with a mini nut. This is especially helpful where clearance is an issue and a standard ER holder is too large a diameter for the application.

Carburized or carbonitrided steel, after carburizing or carbonitriding at 850～950℃, quenched and used under low-temperature tempering (about 200℃). The nitrided steel is directly treated by nitriding (480～580℃), and it is no longer quenched and tempered.

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MariTool has one of the most comprehensive ER collet selections available in the industry including ER collets in 64th sizes and oversize collets such as ER16 in 7/16, ER20 in 9/16, and ER32 in 7/8. ER collet sizes start at ER8 through ER50. Please click on item to see detailed dimensions for each collet.

Tool Holder for Turning Inserts. Internal Tool Holder; External Tool Holder; Grooving Tool Holder; Partting off Tool Holder; Thread Tool Holder