Kyocera EZ Bar Small Internal Machining Set
The Kyocera EZ Bar system provides high precision and easy adjustment for a wide range of small internal machining applications. Manufactured by Kyocera, this tooling series features high-rigidity clamping to prevent tool deviation and internal coolant delivery to ensure smooth chip evacuation during precision boring operations.
Features of the Kyocera EZ Bar System
Engineered for versatility in internal turning, the EZ Bar lineup addresses varying production demands from high-precision finishing to cost-effective volume machining:
- High-Rigidity Clamping: Minimizes tool deflection and vibration, achieving consistent dimensional accuracy across internal operations.
- Internal Coolant Supply: Directs coolant flow smoothly to the cutting edge, reducing thermal buildup and enhancing chip evacuation.
- Versatile Application Range: Supports internal turning, boring, back boring, internal grooving, face grooving, internal threading, copying, internal profiling, and 45-degree chamfering.
- Precision vs. Cost Options: Offers the HP bar (High Precision, offset 0.025 mm) for tight tolerance requirements and the ST bar (Standard/Cost-oriented) for economical processing.
- Advanced Coating & Grades: Integrates PR1725 PVD coating for extended tool life in steel turning and GW05 grade for non-ferrous aluminum machining.
- Diverse Chipbreaker Geometries: Includes H-type (1st recommendation general purpose), F-type (sharpness-oriented finishing for depth of cut ap ≤ 0.2 mm), and NB-type (solid bar without chipbreaker).
Indexable Design & Minimum Bore Diameters
The lineup includes solid carbide bars starting from a minimum bore diameter of ø2 mm up to the indexable EZ Bar PLUS series (minimum bore diameter ø5 mm), which reduces overall tooling costs while maintaining indexable insert convenience.
Technical Specifications
| Specification Parameter | HP Bar (Precision-Oriented) | ST Bar (Cost-Oriented) |
|---|---|---|
| Minimum Bore Diameter | ø2 mm (Solid) / ø5 mm (EZ Bar PLUS) | ø2 mm (Solid) / ø5 mm (EZ Bar PLUS) |
| Bar Offset Tolerance (WF) | 0.025 mm | 0.06 mm |
| Longitudinal Tolerance (L) | 0.05 mm | 0.1 mm |
| Cutting Edge Height Tolerance (Y) | 0.05 mm / 0 mm | 0.06 mm / 0 mm |
| Shank Diameter Relationship | Same as Shank Diameter | Different from Shank Diameter |
| Compatible Insert Grades | PR1725 (Steel/Stainless), GW05 (Aluminum) | PR1725 (Steel/Stainless), GW05 (Aluminum) |
Conclusion
In conclusion, adopting the Kyocera EZ Bar system improves stability and precision across small internal turning operations. For product inquiries and procurement, please visit Contact – LORIOT INDUSTRIAL.

