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10pcs ER20 Spring Steel Collet Set Spring Collet Chuck for CNC Workholding Engraving Milling Lathe Tool 3mm, 1/8'/4mm/5mm/6mm, 1/4', 8mm, 10mm, 12mm, 1/2'

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$19.02

$ 9 .99 $9.99

In Stock

About this item

  • brand new and high grade spring steel, good elasticity, high precision, stable in performance
  • Cylinder empty knife slot grinding process, more suitable for high-speed processing
  • Built in self-release design and tools will never get stuck in holder, improving work efficiency
  • Model: ER20, Height: 30mm, Outside Diameter: 15mm, Run-Out Tolerance: <0.008mm, Range: 3mm, 1/8", 4mm, 5mm, 6mm, 1/4", 8mm, 10mm, 12mm, 1/2"
  • Suitable for CNC milling lathe tool, work-holding engraving machine, high-speed machines and other processing



Product Description

R20 Spring Steel Collet Set for CNC Workholding Engraving Milling Lathe Tool
R20 Spring Steel Collet Set for CNC Workholding Engraving Milling Lathe Tool
R20 Spring Steel Collet Set for CNC Workholding Engraving Milling Lathe Tool
R20 Spring Steel Collet Set for CNC Workholding Engraving Milling Lathe Tool

Specification

Material 65Mn spring steel
Model ER20
Height 30mm
OD 15mm
Output tolerance < 0.008mm
Range 3mm, 1/8", 4mm, 5mm, 6mm, 1/4", 8mm, 10mm, 12mm, 1/2"
Package included 10 x ER20 collets

Hatsu
Reviewed in Canada on February 24, 2025
Of all the collets only one showed a usable run-out of 0.016mm, the others had between 0.050mm to 0.200mm of runout, with a couple not even fitting an end mill of the nominal collet size.They come with burs, but even after removing they are still terrible (the results above are from after removing some of the burs, it was worse before).The pictures show one of the collets that had major burs inside that had to be removed to even fit an end mill.The runout was measured on a collet holder that was dialed on a 4 jaw chuck to less than 0.006mm of runout and using a 0.002mm dial test indicator toMeasure the run out with high quality end mills installed on the collets.Don't waste your time or money.
Remoldex
Reviewed in Mexico on April 17, 2024
Excelente calidad muy exactos y muy contento
AP
Reviewed in the United States on June 29, 2023
Tried the 4mm collet with a 4mm end mill and ended up with a 4.6mm hole. Completely unacceptable. Swapped to a different collet purchased elsewhere and the dimensions were spot on. Stay away from these. They're cheap and perform even worse than you'd expect.
Murdoc
Reviewed in Canada on January 4, 2021
Each collet came in it own plastic store compartment, which is great for keeping them dust free when not in use.I believe this is product is well worth the price we paid for this order.
Brian
Reviewed in Canada on January 30, 2020
Nice fit and finish. Using them with my CNC router 2.2kw spindle. They’re not high-end professional grade, but great quality for the price.
Chris H
Reviewed in Canada on August 12, 2019
delivered on time and undamaged.was exactly as shown. works great.