3pcs ER20 3-12mm Spring Collet Set 1/8-1/2 Inch Chuck Collet for CNC Milling Lathe Tool

Description 3pcs ER20 3 12mm Spring Collet Set 1 8 Inch to 1 2 Inch Chuck Collet for CNC Milling Lathe Tool These are precision collets for professionals and hobbyists demanding ease of operation and high quality work results ER collet is the most widely used clamping system in the world used for a variety of machining applications including boring milling reaming tapping and grinding Collet must be assembled into the clamping nut before inserting into the chuck Specification Type ER20Material Spring steelTotal height 31 5mmOuter diameter Max 21mmClamping Diameter 3mm 1 8 6mm 1 4 13mm 1 2 Quantity 3pcsSuitable For Boring milling drilling tapping engraving CNC spindle machines and other processing Features Product selection of materials high quality spring steel long lasting Clamping force wide clamping range high accuracy Wide range of applications for example boring milling drilling tapping engraving CNC and other processing How to use 1 Insert the tip into the pressure cap gently turn the retainer until the pressure cap eccentric retainer portion recessed groove along the direction of the arrow evenly push hard retainer you can mount the internal pressure cap 2 The pressure cap with retainer mounted together on a spindle or chuck body the cylindrical tool shank after wiping loaded clamping hole use a wrench to tighten the pressure cap even force until the date before the tool folder in prison use Note not in the tool and a