Finishing
CY200 is described for finishing; CY600 for fine finishing of hardened steels and cast irons. Share your surface finish target and cutting allowance.
Ceramic Inserts

Product photo shows the RPGN family. Confirm the exact specification and edge preparation for your order.
A round ceramic insert family for grade-dependent turning applications. Compare dimensions, specify your machining conditions and request the right grade for your workpiece.
Grade choice is an enquiry preference. Supply and compatibility will be confirmed.
Request a QuoteAsk an Application EngineerDimensions in mm. Select a row to carry its model into your enquiry.
| ISO model | ANSI / ASA | d | t | Enquiry |
|---|---|---|---|---|
| RPGN 090300 | RPGN 320 | 9.52 | 3.18 | |
| RPGN 090400 | RPGN 330 | 9.52 | 4.76 | |
| RPGN 120300 | RPGN 420 | 12.70 | 3.18 | |
| RPGN 120400 | RPGN 430 | 12.70 | 4.76 | |
| RPGN 120700 | RPGN 450 | 12.70 | 7.94 | |
| RPGN 150700 | RPGN 550 | 15.87 | 7.94 | |
| RPGN 190700 | RPGN 650 | 19.05 | 7.94 |
Dimensions in mm as labeled in the catalog. Reference specifications do not establish current stock; confirm the exact drawing and grade before ordering.
Browse more ceramic insert shapes →The CY descriptions below are application references. Ask Huamin to confirm a suitable material system and the exact grade–model combination for this geometry.
CY200 is described for finishing; CY600 for fine finishing of hardened steels and cast irons. Share your surface finish target and cutting allowance.
A starting point for general machining of hardened steels and cast irons. Include interruption level and machine stability in the review.
For high-speed fine finishing enquiries in hardened steels and cast irons. Confirm setup, parameters and edge preparation before trials.
Identify gray, ductile or alloy cast iron, together with hardness, allowance and interrupted surfaces.
Provide steel designation, hardness and dimensional tolerance. Compare the ceramic and CBN options where appropriate.
Provide the holder code, current insert and edge requirements. Match seat, clamp and specification before ordering.
Confirm the full insert and holder codes, seat geometry, thickness and clamping arrangement. A RPGN family name alone does not establish compatibility.
Start with your material, hardness and operation. Include interruption level, speed, feed, depth of cut and finish requirements. If uncertain, choose “Recommend a grade” in your enquiry.
The specification table is a reference range. Send your model, grade and quantity for supply and lead-time confirmation.
This depends on the grade, edge preparation, workpiece and rigidity. Send details of the interrupted surfaces before deciding.
Send a drawing or sample details with your machining requirements for a feasibility review.
Select your specification and tell us your machining need. Send your enquiry directly to Huamin Tools.