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HSMT threading head – for IR inserts (08IR / 11IR / 16IR / 22IR)

Kortools

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€21.59

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HSMT10-10F08

HSMT12-12F11

HSMT14-14K11

HSMT16-16K16

HSMT16-20K16

HSMT18-18K16

HSMT18-20K16

HSMT20-20K16

HSMT25-25M16

HSMT25-25M22

HSMT32-32R22

HSMT35-32R16

HSMT35-32S22

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Product description

HSMT indexable thread mill for IR inserts

HSMT indexable thread mill

HSMT is a shank-type tool for CNC thread milling, using a replaceable threading insert secured by a central screw. The family supports internal and external threads when the insert and machining path are selected appropriately. The body is made of vacuum-hardened 42CrMo alloy steel.

The selected option defines minimum bore diameter, body dimensions, insert size and coolant version. Bodies with and without internal coolant are available.

The purchase is one body in the selected size, without a cutting insert. The installed insert in the photograph illustrates seating; purchase the insert separately. The card for the selected option states the required IR insert size.

Applications and workpiece materials

The tool is used for thread milling on CNC machining centres. Right-hand or left-hand threading requires an appropriate insert and a correctly programmed machining path. The body designation does not replace selection of thread profile, pitch or insert version for the workpiece material.

Workpiece material	Selection requirement	Application scope
Structural, alloy and mould steels	Suitable IR insert grade and geometry	Thread milling using an insert intended for the particular steel
Stainless steel	An insert version for stainless steel	Account for the material when selecting the edge and operating conditions
Aluminium, aluminium alloys, copper and non-ferrous metals	An insert suitable for the particular material	Insert application must be considered separately from body material
Cast iron and titanium alloys	An appropriate insert version	A common seat size does not give every insert the same grade
Plastics	Geometry and operating conditions suited to the workpiece	Selection must also account for the particular plastic

The body holds the insert and transfers milling loads, while the insert edge generates the thread. Therefore, 42CrMo steel and body hardness do not mean that any insert can machine every listed workpiece material. Select cutting conditions for the particular tool assembly.

Body construction and technical data

Parameter	Construction	Meaning
Family	HSMT	Shank-type tool for thread milling
Body material	42CrMo alloy steel	Structural body material, separate from insert material
Body hardness	30–45 HRC	This is not permissible workpiece hardness
Body processing	Vacuum hardening and grinding	Vibration resistance and preparation of mounting surfaces
Insert fastening	Central screw	The insert is supported by its intended seat
Cutting arrangement	One working insert	The insert is the replaceable cutting component
Insert system	08IR, 11IR, 16IR or 22IR	Match the size to the particular body option
Purchase item	One body without an insert	Cutting inserts sold separately

The rigid body is adapted for continuous operation; ground surfaces provide stable mounting. The seat locates the insert and the central screw retains it against its support surfaces. Working-part geometry provides space for chip evacuation.

When replacing an insert, check seat cleanliness and correct contact with the support surfaces. The body and fastening component must be in a condition that allows the cutting edge to seat correctly. A replaceable insert can be changed without replacing the complete body.

Reading the dimensions on an option card

Designation	What it describes	Use when selecting
Dmin	Minimum bore diameter	Check this dimension when selecting for an internal thread
L1	Working-part length up to the body shoulder	A separate dimension from overall tool length
L	Overall length	Complete tool length including the shank
d	Shank diameter	Match the mounting diameter to the holder
Neck diameter	Reduced working-part diameter	The dimension shown with a separate line beside the tool photograph

Dmin is minimum bore diameter, rather than cutting diameter or shank diameter. These quantities must not be used interchangeably. The card also shows working-part length, overall length and neck diameter so that the complete dimensions of the selected version can be compared.

Choose the size using the product option selector. The card heading and dimension-line values refer to the particular body. The diagram is illustrative, not to scale.

IR inserts and purchase contents

Insert size	Body selection	What to check before ordering
08IR	For a seat designated 08IR	Complete version, thread profile and pitch
11IR	For a seat designated 11IR	Size compatibility with the particular body
16IR	For a seat designated 16IR	Grade and geometry suitable for the workpiece
22IR	For a seat designated 22IR	Complete insert designation and correct seating

The sizes 08IR, 11IR, 16IR and 22IR are assigned to corresponding body options. This does not mean that one body accepts all four sizes. Use the size specified on the selected option card, then match the complete insert version to the thread and workpiece material.

The IR family designation alone does not specify the grade, coating or profile of every insert. Consider thread hand and tool-path direction together with the insert and machining program. Insert colour in the photograph is not sufficient information for ordering.

Coolant and version identification

The family includes versions without internal coolant and versions with coolant channels. The card identifies coolant construction separately for each size in Polish and English. Before ordering, compare this information with the option code and dimensions.

The version without internal coolant does not supply coolant through body channels.
The internal-coolant version requires coolant supplied through a suitable mounting assembly.
Insert size does not identify coolant construction; read the selected body version.

Mist cooling or an air blast can be used when machining steel. Match the coolant arrangement to the insert and machining conditions, and treat internal channels as a construction feature of the particular body.

Mounting, runout checks and preparation

Operation	Principle	Scope
Runout check before cutting	Measure runout with the tool mounted	Runout greater than 0.01 mm must be corrected before machining
Tool overhang	Keep projection from the holder as short as possible	Longer overhang requires reducing speed, feed or the amount of cut
Unusual vibration or noise	Reduce speed and the amount of cut	Adjust conditions until the machining behaviour improves
Cutting-parameter selection	Match the insert, workpiece and mounting	Settings do not follow from body size or the HSMT name alone
Machine type	CNC milling machine	The tool is not intended for bench or hand-held drilling machines

The 0.01 mm value is a pre-machining runout check threshold. It does not state guaranteed body accuracy or finished-thread accuracy. The measurement concerns the tool in the holder being used and must be checked before cutting.

Overall tool length is not the same as projection beyond the holder. Preparing the operation includes a matching holder, the shortest practical overhang and correct insert seating. Adjust conditions if vibration or unusual cutting noise occurs.