MFPN66 planning head with internal cooling for inserts PNMU090508 - FMB push-on holder

Kortools

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MFPN66-50-22-4T

MFPN66-63-22-5T

MFPN66-80-27-6T

MFPN66-100-32-7T

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Product description

MFPN66 face milling cutter for PNMU090508 inserts

66° approach angle • internal coolant • FMB shell mounting

MFPN66 shell milling cutter for face milling and high-feed roughing. The 42CrMo steel body accepts double-sided PNMU090508 inserts with ten cutting edges per insert. The approach angle is 66°. Internal passages allow coolant to reach the cutting area through a suitable arbor and the tool.

The item sold is one cutter body without cutting inserts. Inserts are selected and purchased separately. The photographs show an assembled cutter; they are illustrative and not to scale. The selected variant specifies the cutting diameter, mounting bore and number of insert pockets.

Applications and workpiece material

Operation	Purpose and conditions
Face milling	Machining flat surfaces with a 66° approach-angle cutter.
Roughing	Removing stock with feed, depth and width of cut adapted to the insert and rigidity of the machining setup.
High-feed machining	The appropriate feed depends on insert geometry and grade, workpiece material and machine capability.
Plunge milling	Only under suitable, prepared machining conditions. Confirm the entry capability of the assembled tool for the planned toolpath.

The system is used for steel, stainless steel, cast iron and selected special alloys with an appropriate insert grade. The 42CrMo body material does not identify the carbide grade or coating of the cutting insert. Select the insert for the specific workpiece material, cutting conditions and required surface quality.

Body construction and insert system

The MFPN66 body has FMB shell mounting, a central mounting bore and insert pockets distributed around its circumference. Replaceable PNMU090508 inserts are secured in the pockets by screws. After one edge wears, another available edge of the same insert can be indexed into the cutting position.

Ten cutting edges refers to one insert, not to the number of pockets or inserts in the body. The cutter has four to seven pockets, depending on diameter. The 66° angle identifies the family geometry; it is not a 90° cutter for square shoulders.

Technical specifications

Parameter	Value / execution
Family / angle	MFPN66 / 66°
Body / coolant	42CrMo / internal coolant
Insert system	PNMU090508; double-sided insert with 10 edges
Mounting / bores	FMB shell mounting; Ø22, Ø27 or Ø32 mm
Diameters / pockets	Ø50–Ø100 mm / 4–7 pockets, depending on variant
Maximum depth APMX	5 mm
Screws / key	M4x10 / T15
Sale unit	1 cutter body without cutting inserts

APMX=5 mm is the stated maximum depth of cut for this tool family. It is not a recommended depth for every operation. Choose working values to suit the insert, workpiece, spindle power, workholding and actual cutter engagement. OAL is the overall axial height of the cutter body, not the length of the cutting edge.

Dimensions and FMB mounting

Diameter DC / pockets	Bore DCB	OAL	DCCB / KWW	Type
Ø50 mm / 4	Ø22 mm	40 mm	17 / 10.4 mm	A
Ø63 mm / 5	Ø22 mm	40 mm	17 / 10.4 mm	A
Ø80 mm / 6	Ø27 mm	50 mm	34 / 12.4 mm	A
Ø100 mm / 7	Ø32 mm	50 mm	42 / 14.4 mm	A

DC is the cutting diameter, DCB is the mounting bore diameter and OAL is the overall axial height. DCCB and KWW are additional mounting-dimension symbols. All linear dimensions in the table are in millimetres. These executions use mounting geometry type A.

Match the FMB arbor to the cutter bore: Ø22 mm for Ø50 and Ø63, Ø27 mm for Ø80 and Ø32 mm for Ø100. Also check the mating mounting surfaces and drive keys. Cutting diameter is distinct from the mounting bore diameter. The FMB designation alone does not replace a comparison of cutter and arbor dimensions.

Coolant needs an unobstructed path through the spindle or suitable supply system, the arbor and cutter body. Passages in the cutter alone do not provide through-tool coolant when the arbor does not support the supply. Check coolant delivery to the cutting area before machining.

How to read the variant code

Example: MFPN66-63-22-5T. The code identifies the cutter family, cutting diameter, mounting bore and number of insert pockets in that order. The variant name and its card describe the same execution.

Code element	Meaning
MFPN66	Shell cutter family with a 66° approach angle.
63	Ø63 mm cutting diameter.
22	Ø22 mm mounting bore.
5T	Five insert pockets.

The number before T identifies the pocket count of the body. It is not the number of cutting edges available on one insert. Refer to the dimensional table for OAL and the other mounting dimensions. The code does not specify insert grade, coating or cutting parameters.

Cutting parameters and tool preparation

Example parameters for C55 steel: Vc=250 m/min, fz=0.4 mm/tooth, ap=2 mm and ae=70 mm. This is a machining example that requires adaptation to the insert and working conditions; it is not a universal setting for the entire cutter family.

Symbol	Example value	Meaning
Vc	250 m/min	Cutting speed.
fz	0.4 mm/tooth	Feed per tooth, not the machine feed rate.
ap	2 mm	Depth of cut in the example; below APMX 5 mm.
ae	70 mm	Width of cut; this example concerns Ø80 or Ø100 cutters, not Ø50 or Ø63.

Select PNMU090508 insert grade and geometry for the workpiece material.
Clean pockets and mounting surfaces before fitting inserts and the cutter.
Check full insert seating, the condition of M4x10 screws and the T15 key fit.
Check mounting rigidity, tool runout and coolant flow.
Adapt feed, cutting speed, ap and ae to machine capability and perform a controlled machining trial.

Changing cutter diameter changes the relationship between cutting speed and spindle speed. Pocket count affects the machine feed rate at the same feed per tooth. Recalculate settings before transferring them to a different diameter or pocket count. For plunge milling, separately confirm insert capability and the entry toolpath.

Contents and separately selected components

Component	Product scope
Included	1 MFPN66 body with internal coolant, T15 key and M4x10 screws.
Cutting inserts	Sold separately; compatible system PNMU090508.
FMB arbor	Selected separately to match the mounting bore and connection geometry.

A photograph with mounted inserts shows an assembled tool. The inserts visible in the photograph are not included with the cutter body. To begin machining, suitable inserts and an arbor compatible with the FMB connection and internal coolant supply are required.

Frequently asked questions

Are inserts included?
No. The item includes the cutter body, T15 key and M4x10 screws. PNMU090508 inserts are sold separately.

Do all variants have internal coolant?
Yes. The variants in this listing have internal coolant. A compatible supply system and arbor are needed to use it.

Does the Ø63 cutter have five or six pockets?
The internal-coolant Ø63 variant has five pockets. Follow the 5T designation in the selector.

What does ten cutting edges mean?
Ten cutting edges refers to one double-sided insert. The number of cutter pockets is given by the number before T.

Can identical settings be used for every diameter?
Adapt settings to diameter, pocket count, insert and machining conditions. The C55 example with ae=70 mm does not apply to Ø50 or Ø63 cutters.