- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
CNMG 190612 turning insert – indexable 80° diamond
| Technical data | |
|---|---|
| Side length l | 19.05 mm |
| Insert thickness s | 6.35 mm |
| Hole diameter d1 | 7.94 mm |
| Nose radius re | 1.2 mm |
| ANSI code | CNMG 643 |
Cutting data for the CNMG 190612 insert for steel and stainless steel
finishing, semi-finishing and roughing — ISO P and M groups
| Material | Finishing | Semi-finishing | Roughing | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Vc [m/min] | Feed f [mm/rev] | ap [mm] | Vc [m/min] | Feed f [mm/rev] | ap [mm] | Vc [m/min] | Feed f [mm/rev] | ap [mm] | |
| PSteel | 120-220 | 0.18 | 0.8 | 115-210 | 0.35 | 4 | 115-210 | 0.6 | 8.6 |
| MStainless steel | 130-225 | 0.18 | 0.8 | 125-220 | 0.35 | 4 | 115-210 | 0.6 | 8.6 |
Grade H6310 cemented carbide indexable insert – applications and construction
double-sided 80° diamond with a hole and chip breaker
The CNMG 190612 turning insert is a double-sided, indexable diamond insert made of grade H6310 cemented carbide, designed for turning steel and stainless steel. The C shape, a diamond with a 80° corner angle, combines a strong corner that withstands loads with the ability to perform longitudinal turning and facing with one tool. The negative geometry with a 0° clearance angle allows both sides of the insert to be used — a total of four cutting edges. The large nose radius rε of 1.2 mm handles high feed rates and is well suited to roughing and semi-finishing. The hole and chip breaker on both sides (type G according to ISO 1832) control chip flow and chip breaking at large depths of cut.
Key advantages of the H6310 cemented carbide insert
- Four cutting edges — 2 corners with a 80° angle on each of the two sides reduce the cost per cutting edge compared with single-sided inserts.
- Grade H6310 for ISO groups P and M — general-purpose PVD-coated carbide: steel (P20-P40) and stainless steel (M20-M40), and occasionally cast iron.
- Corner radius rε 1.2 mm — handles high feed rates and heavy stock removal, allowing one insert to cover roughing and semi-finishing operations.
- The strong 80° corner angle provides a rigid, durable cutting edge that withstands impact loads during interrupted turning.
- Tolerance class M ensures repeatable edge positioning after indexing the insert in the holder pocket.
- Dimensions according to ISO 1832: cutting edge length 19.05 mm, thickness 6.35 mm — compatible with holders with a 19 pocket.
Applications and cutting data selection for the diamond-shaped insert
The CNMG 190612 insert (also written without a space as cnmg190612) is suitable for rough and semi-finish turning of shafts, bushings and forgings made of structural steels, as well as stainless steel components. Calculate spindle speed using n = 1000·Vc/(π·D): for a shaft with a diameter of 80 mm at Vc = 180 m/min, the result is approximately 716 rpm. When machining stainless steels, maintain a cutting speed of 130–225 m/min and a constant feed rate to reduce work hardening of the layer being cut. The thickness of 6.35 mm and radius of 1.2 mm allow several millimeters of stock to be removed in a single pass. Grade H6310 indexable inserts are supplied by the Korean brand Horn.
In the CNMG 1906 family, the nose radius determines the application: a smaller radius favors finishing and a smooth surface, the 1.2 mm radius is a general-purpose roughing variant that handles higher feed rates, and larger radii are selected for the heaviest roughing. As an insert for turning tools, CNMG 190612 is compatible with holders with a size 19 C-shaped diamond pocket — both for external turning and with boring bars for machining holes. This cutting insert is suitable for series production, where quick cutting edge changes without resetting the tool matter.
▲
Application limitation
Grade H6310 is not intended for steels hardened above 45 HRC — for hard turning, choose turning inserts for hardened steel with a cubic boron nitride cutting edge CBN.
Rhombic insert designation decoder according to ISO 1832
how to read the CNMG 190612 code — positions 1–7 of the designation
Designation CNMG 190612 according to the standard ISO 1832: 4 letters describe geometry and construction, 3 numeric codes describe dimensions. Each field has a number, an icon, and a brief description.
Compatible turning tools
holders with a size 19 C-shaped diamond pocket — external and internal turning
PCLNR/L 3232 P1932×32 × 170 mmR right-hand
←L left-hand
→
←L left-hand
→
PCLNR/L 4040 S1940×40 × 250 mmR right-hand
←L left-hand
→
←L left-hand
→
PCBNR/L 3232 P1932×32 × 170 mmR right-hand
←L left-hand
→
←L left-hand
→
PCBNR/L 4040 S1940×40 × 250 mmR right-hand
←L left-hand
→
←L left-hand
→
PCMNN 3232 P1932×32 × 170 mmR right-hand
←L left-hand
→
←L left-hand
→
PCMNN 4040 S1940×40 × 250 mmR right-hand
←L left-hand
→
←L left-hand
→
S40U PCLNR/L-19Ø40 | Ømin 50 mm | L=350R right-hand
←L left-hand
→
←L left-hand
→
S50V PCLNR/L-19Ø50 | Ømin 63 mm | L=400R right-hand
←L left-hand
→
←L left-hand
→
Frequently asked questions about the CNMG 190612 insert
use, turning tool selection, and turning parameters
Four — the 80° diamond has 2 corners usable per side, and the negative geometry (0° clearance angle) allows both sides of the insert to be used. When an edge becomes dull, simply index the insert in its pocket without changing the holder.
Holders with a size 19 C-shaped diamond pocket: for external turning PCLNR/L (entering angle 95°), PCBNR/L (75°) and PCMNN (50°) with shank cross sections of 32×32 and 40×40 mm; for internal turning, boring bars S40U and S50V with a PCLNR/L head. See the compatible turning tools section for the complete list.
The radius 1.2 mm strengthens the corner and allows higher feed rates, making CNMG 190612 a variant for roughing and semi-finishing. Smaller radii (e.g. 0.8 mm) are selected for finishing when surface finish takes priority over productivity.
Yes — grade H6310 covers group ISO M20-M40. Maintain a cutting speed of 130–225 m/min, a constant feed, and continuous emulsion cooling: austenitic steel conducts heat poorly and work-hardens when cutting is too slow.
Reviews
No customer reviews for the moment.
Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
Recommended for you
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.