High precision
Consistent clamping for demanding machining operations.
Precision tooling / ER series
Professional CNC Tooling Solutions
Reliable ER Collet Supplier for Precision Machining Applications
01
Clamping component
ER collet system
Clamping component
ER collet system
Company / KRONTRA
KRONTRA provides precision CNC tooling components for global machining companies and distributors.
Clear specifications•International inquiries•OEM support
Product family
ER Collet Series
A focused product range for common precision machining and tool-holding requirements.
ER series / 01↗
ER8
Capacity 1–5 mm
ER series / 02↗
ER11
Capacity 1–7 mm
ER series / 03↗
ER16
Capacity 1–10 mm
ER series / 04↗
ER20
Capacity 1–13 mm
ER series / 05↗
ER25
Capacity 2–16 mm
ER series / 06↗
ER32
Capacity 2–20 mm
ER series / 07↗
ER40
Capacity 3–26 mm
Product values
Built around the essentials
Stable performance
Designed for repeatable tool holding across production runs.
CNC applications
A practical range for milling, drilling, engraving, and routing.
Reliable quality
Clear product specifications and dependable order communication.
Applications
Where ER collets work
Reliable tool clamping across common CNC and industrial manufacturing environments.
CNC machining
Precision clamping for milling, drilling, boring, and engraving operations.
Tool holders
Compatible ER-series collets for common collet chucks and tool holder systems.
Industrial manufacturing
Tooling supply for workshops, production facilities, and industrial distributors.
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