Korloy Positive Turning Inserts | CCMT DCMT TCMT VBMT

KORLOY Positive Turning Inserts — CCMT, DCMT, TCMT, VBMT Catalog (202 SKUs)

Shop 202 genuine KORLOY positive turning inserts covering 19 ISO shapes and 16 carbide grades — from aluminum finishing with H01 uncoated to heavy steel roughing with NC3030 CVD, plus mirror-finish cermet (CN2000 / CC115) and KORLOY's signature KF-series for cast iron. All inserts are single-sided 7° or 11° clearance, with 2 to 4 cutting edges — ideal for low-cutting-force Swiss-type lathes, thin-wall shafts, and precision finishing where negative rake would deflect the part.

Browse the full KORLOY master catalog (557 SKUs) for grooving, face grooving, MGMN, round inserts, and negative turning. Or jump directly to the most-searched KORLOY sub-collections: MGMN grooving (85) · Grooving aggregate (148) · FMM face grooving (5) · VN series 35° diamond · RC/RP/RD round inserts. For KORLOY brand story and grade selector, see the KORLOY brand page.

ISO Positive-Rake Nomenclature (ISO 1832)

Each KORLOY insert code follows ISO 1832: shape — clearance — tolerance — size — chip-breaker — grade. The second letter is the key positive-rake indicator:

• P = 11° positive clearance (light cutting, aluminum, thin-wall)
• G = 7° positive clearance (precision finishing, mirror surface, cermet)

Common KORLOY positive inserts by 4-letter shape prefix:

KORLOY 16 Grades — Steel, Stainless, Cast Iron, Aluminum, Cermet

KORLOY's grade family is one of the most complete among Korean carbide makers. NC-series is the CVD-coated workhorse for steel; PC-series is the PVD-coated family for stainless and mixed-condition work; KF-series is the cast-iron specialist; H01 is uncoated K-class for aluminum and non-ferrous; CN2000 / CC115 are cermet for mirror finishing.

Choosing a grade? NC3030 covers ~70% of general-steel turning jobs. PC9030 is the safest first pick for stainless or mixed steel+stainless work. H01 is the go-to uncoated grade for aluminum 6061/7075. KF2500 / KF5800 are the KORLOY specialty for cast iron, competitive with Sandvik GC and Kyocera CA.

Recommended Cutting Parameters

Compatible Tool Holders

KORLOY positive inserts are dimensionally interchangeable with industry-standard ISO tool holders. Quick reference for the 4 most-used shapes:

• CCMT (80° square, 7° P) → KORLOY SCLCR/L, Sandvik R/L 123, Mitsubishi MCSR/L, Iscar SCR/L-CR/L
• DCMT (55° diamond, 7° P) → KORLOY SDJCR/L, Sandvik R/L 123, Mitsubishi MDSR/L
• TCMT (60° triangle, 7° P) → KORLOY STFCR/L, Sandvik R/L 123, Mitsubishi MTSR/L
• VBMT (35° diamond, 7° P) → KORLOY SVJCR/L, Sandvik R/L 123, Mitsubishi MVJR/L

Browse indexable tool holder accessories (155 SKUs) for shims, screws, wrenches, and replacement parts compatible with these KORLOY-positive tool holders.

Typical Applications

• Aluminum 6061 / 7075 / cast aluminum — H01 uncoated (positive is the only sensible choice for aluminum; negative rake causes BUE)
• Steel mirror finish (Ra < 0.4 μm) — CN2000 / CC115 cermet with CCGT / DCGT / VBGT precision shapes
• Stainless 304 / 316 / 17-4PH — PC9030 PVD (widest application range) or NCM325 for tough conditions
• Cast iron (gray GG25 / ductile FCD450) — KF2500 finishing / KF5800 general — KORLOY's specialty
• Thin-wall aluminum / brass parts (medical, aerospace) — VBMT 35° (lowest radial cutting force, minimizes deflection)
• Long slender shaft turning — DCMT 55° (low radial force), avoids chatter
• Swiss-type lathe (Citizen, Star, Tsugami) — CCMT 06 series (6.35mm IC, compact for sliding-head geometry)
• Hardened steel HRC 50–62 (skiving, light finishing) — CN2000 cermet, dry cutting

Why Choose KORLOY Positive Inserts from CNCHome-Beyond

• Genuine Korea KORLOY — All inserts are original KORLOY (Korea, 1966), not generic OEM-equivalent. ISO 9001 certified.
• Factory-direct pricing — Sourced directly from KORLOY's Korea and China distribution. Typically 30–50% below US/EU OEM list price.
• 16-grade KORLOY-ecosystem coverage — Only retailer listing the full KORLOY grade spectrum from NC3020 (steel CVD) to PC9030 (PVD workhorse) to KF5800 (cast iron) to H01 (aluminum) to CN2000 (cermet).
• Bulk discount — 2–9 pieces 6% OFF · 10+ pieces 12% OFF · mixed SKUs welcome.
• 3–7 day global delivery — DHL / UPS / FedEx from Hangzhou warehouse. Ships to 50+ countries.
• Technical support — Direct WhatsApp / email with cutting-parameter engineers. chao@cnchome-beyond.com

Cross-Reference: KORLOY vs Major Brands

Comparing the equivalent positive-turning insert lines from the four brands we stock:

For broader catalog browsing, see the Premium Carbide Inserts aggregate (5,880 SKUs across 8 global brands), the 248 best-selling inserts, and the brand pages for Mitsubishi, Tungaloy, and TaeguTec.

KORLOY Positive Turning Inserts FAQ

Q: When should I choose positive (CCMT, VBMT) vs negative (CNMG, WNMG) turning inserts?

Positive inserts have lower clearance angle (7° or 11°), so cutting force is significantly lower — ideal for thin-wall parts, long slender shafts, Swiss-type lathes, and small bores. Negative inserts (CNMG, WNMG) have 0° clearance and double-sided cutting edges, giving higher rigidity and longer edge life for heavy roughing on rigid machines. Use positive when the part is delicate or the machine has limited rigidity; use negative for heavy stock removal on rigid setups.

Q: What is the difference between M-tolerance (CCMT) and G-tolerance (CCGT) KORLOY positive inserts?

M-tolerance (CCMT) is the standard production grade, with a wider tolerance on insert dimensions. It is the most cost-effective and is used for the majority of general turning work. G-tolerance (CCGT) is precision-ground with tighter thickness and diameter tolerances, ground chip-breaker geometry, and superior edge sharpness. G-tolerance is required for mirror-finish steel turning (cermet CN2000 / CC115), precision profiling, and aluminum finishing where surface finish and dimensional repeatability matter.

Q: Which KORLOY grade should I pick for stainless steel (304 / 316)?

PC9030 is the safest first choice for stainless — it is KORLOY's flagship PVD grade with a wide P10–M25 application range and works well for both stainless and mixed-condition steel+stainless work. For tougher conditions (interrupted cuts, harder stainless like 17-4PH), use NCM325. For heavy roughing, step up to PC5300 (M20–M35). Avoid CVD-coated NC-series on stainless — the coating is optimized for steel and tends to chip on stainless work-hardened surfaces.

Q: Are KORLOY inserts genuine? Where do they ship from?

Yes — all inserts are genuine KORLOY (Korea, 1966), not generic OEM-equivalent. They are sourced from KORLOY's authorized distribution network. We ship from our Hangzhou warehouse via DHL / UPS / FedEx, with 3–7 day delivery to most countries. Bulk orders (10+ pieces) qualify for 12% off and can be mixed across SKU codes.

Q: What is the difference between KORLOY and Sandvik / Mitsubishi for the same positive turning job?

KORLOY is positioned as a cost-effective Korean alternative to Sandvik (GC3015 / GC3025) and Mitsubishi (US7020 / US7025). For general steel and stainless turning, performance is broadly comparable. KORLOY is particularly strong in cast iron turning (KF-series), where KF2500 / KF5800 are competitive with Sandvik GC and Kyocera CA. The main trade-off is KORLOY's smaller global brand recognition and somewhat shorter application-engineering support network; for Asian and Eastern European markets, KORLOY is often the first choice for mid-volume production.

Q: Can I get a custom KORLOY grade or chip-breaker geometry not in this catalog?

For orders of 50+ pieces we can request KORLOY custom grades and chip-breaker geometries directly from Korea (typical lead time 4–6 weeks). Common custom requests include non-standard edge prep (T01020, T02020), custom chip-breaker geometry for thin-wall or hardened-steel work, and special-aluminum-grade edge-honing. Contact us at chao@cnchome-beyond.com with your workpiece material, hardness, and target surface finish.

Ready to order? Browse 202 KORLOY positive turning inserts above — 19 ISO shapes, 16 grades, factory-direct pricing, 3–7 day global delivery. Questions? Email chao@cnchome-beyond.com or WhatsApp +86 15990663752.