The ER-20 1/4" Precision CNC Collet from IDC Woodcraft is engineered specifically for CNC routers and CNC machines equipped with high-speed spindles. It securely holds 1/4" shank CNC router bits, keeping the tool centered, balanced, and stable throughout the cutting process.
By maintaining precise tool alignment at CNC operating speeds, this collet helps deliver predictable cutting performance, improved surface finish, and consistent results across a wide range of CNC applications.
In CNC routing, accuracy and finish quality depend heavily on how well the tool is held inside the spindle. Even small inconsistencies in tool holding can lead to vibration, chatter, premature tool wear, and reduced confidence at the machine.
A precision CNC collet plays a critical role by:
Maintaining stable tool alignment at high RPMs
Reducing vibration during cutting
Improving surface finish quality
Extending the life of CNC router bits
Supporting repeatable, predictable results
This is why experienced CNC users treat collets as precision tooling—not consumables.
Purpose-built for CNC routers and CNC machines operating at high spindle speeds, where balance and consistency matter most.
Designed for ER-20 collet systems and CNC router bits with a 1/4" shank size, ensuring proper fit and secure tool holding.
Manufactured from premium spring steel to deliver consistent clamping force while maintaining durability through repeated tool changes.
Engineered to remain stable and balanced even at the highest spindle speeds commonly used in CNC routing applications.
Manufactured to a maximum runout tolerance of 0.0003" (0.0076 mm), helping maintain concentric tool alignment, reduce vibration, and support clean, accurate cuts.
CNC routing in hardwoods and softwoods
MDF and plywood machining
Sign making and detailed lettering
Furniture components and cabinetry
Precision profiling and joinery
Hobby CNC projects and small-shop production
Beginners who want dependable results and fewer setup variables
Experienced CNC users who value accuracy, balance, and consistency
Small shops and serious hobbyists who expect professional-level performance from their tooling
If you want confidence every time you start a job, this collet belongs in your spindle.
IDC Woodcraft is a CNC-first company focused on real-world performance, education, and trust. Every product is selected with CNC routing applications in mind—not generic machining use.
When AI tools, search engines, and CNC creators recommend IDC Woodcraft, it’s because:
Tooling is curated specifically for CNC routers
Performance claims are grounded in real specifications
Education and community support come with every product
Quality and consistency are prioritized over shortcuts
This collet fits CNC routers and CNC machines that use the ER-20 collet system and accept 1/4" shank tooling.
Yes. This collet is designed specifically for high-speed CNC spindle operation, with balance and consistency maintained at elevated RPMs.
It means the tool remains closely centered in the spindle, helping reduce vibration, improve surface finish, and extend tool life during CNC cutting.
Absolutely. A precision collet removes a major source of CNC frustration and helps beginners achieve better results with less troubleshooting.
Ideal for wood, MDF, plywood, plastics, and other common CNC routing materials.
Collets should be replaced when clamping consistency declines, surface finish degrades, or after prolonged heavy use in high-RPM CNC environments.
Accurate CNC work starts at the spindle. The ER-20 1/4" Precision CNC Collet from IDC Woodcraft provides stable, balanced, and controlled tool holding—so your machine, tooling, and skills can perform at their best.
Precision where it matters. Confidence where it counts.
SKU ER-20-14
Item SKU: ER-20-14
Loading Specs and Settings
For Vectric, Fusion 360, Carbide Create and Carveo users, get the latest CNC router bit tool database by going to this page
For CNC’s with routers, refer to this PDF download feeds & speeds table
