MCMNN external turning holder for CNMG inserts

Availability:

Select a variant to see available quantity pcs.

€22.54

Shipping costs are not included in the price.

Quantity

pcs.

Shipping time: 24 hours

Ask about the product

Click Available to show variants with 24h shipping

Product description

MCMNN external turning holder for CNMG inserts

MCMNN indexable holder for external turning, using CNMG inserts. Clamping: top insert clamp. The final letter R, L or N in the five-letter holder designation identifies its hand.

Shank size, holder length and insert seat size are separate parameters. Read the selected variant designation before choosing an insert; shank width alone does not determine compatibility.

Application

For machining external workpiece surfaces on a lathe. Select R or L according to the required tool orientation; N identifies the neutral design. Choose the insert geometry, cutting grade and machining parameters for the operation and workpiece material.

Entering angle of this design: 40°.

The MCMNN-100 design is intended to work with the obtuse corner of a CNMG insert. The insert diamond has acute 80° and obtuse 100° corners; the -100 design uses the obtuse corner.

Specifications

Parameter	Value
Holder family	MCMNN
Insert family	CNMG
Clamping	Top insert clamp
Hand	Neutral (N)
Cutting insert	Sold separately
Entering angle	40°
Insert corner geometry	80° / 100°; the -100 design works with the 100° corner
Insert clearance angle	0°

Insert seat and insert size

The holder code suffix identifies the insert seat size. The same shank size may be available with different insert sizes. Match both the insert family and its size.

Parameter	Value
Holder code suffix	12
Insert family and size	CNMG 120408

The size designation does not specify corner radius, grade or chipbreaker. Select these insert features separately while preserving compatibility with the seat geometry and dimensions.

Shank and holder length

Shank [mm]	Overall length [mm]	Code suffix	Insert	Hand
20 × 20	125	12	CNMG 120408	N
25 × 25	150	12	CNMG 120408	N

Select the current variant using the product selector. The shank must fit the lathe toolholding arrangement; check shank size and overall length separately.

Clamping and parts

Insert clamping: Top insert clamp. The insert must seat in the selected holder design. Spare-part codes refer to the specific clamping system and insert seat size.

Seat size	Part	Designation
12	Insert seat shim	MC1204
12	Pin	CTM617
12	Clamp	HL1813
12	Screw	ML0625
12	Key	L3.0

Reading the variant designation

Code element	Meaning
Letter designation	Holder family, geometry and clamping
R / L / N	Right-hand / left-hand / neutral
Two pairs of digits after the letters	Shank width and height [mm]
Letter following shank size	Holder length designation
Code suffix	Insert seat size

Tool selection

Check the insert family, seat size, shank, holder length and R/L/N design together. Choosing an insert grade for steel, cast iron, aluminium or another material does not change the required fit between insert and holder seat.