Mongtec HSK-T100 turning tool holders

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What HSK-T is for

HSK-T is the turning variant of the HSK taper. It keeps HSK's hollow short taper and face contact — so the holder locates on two surfaces at once and repeats to a few microns — but the drive slots are cut for the static, one-directional loads of turning rather than the reversing torque of milling. On a turning centre or a mill-turn machine with an HSK-T interface, that means a turning tool can be changed automatically, in the same way a milling holder is, instead of being bolted to a block and re-dialled.

The practical gain is setup time. A shop running mixed lots changes the whole turning tool, pre-set offline, and the machine finds the same cutting-edge position every time. The taper does the alignment, not the operator.

Specification

Article numbers — dimensions in mm

The dimension symbols below (f, D min, L, L1) are the catalogue's own and refer to the dimension drawing printed for each tool style. A dash means the catalogue does not print that dimension for that style. Direction: R = right hand · L = left hand · N = neutral.

CN·· inserts — 30 article numbers

Insert seat: CN·· (80° rhombic, negative (0° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

DN·· inserts — 24 article numbers

Insert seat: DN·· (55° rhombic, negative (0° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

SN·· inserts — 8 article numbers

Insert seat: SN·· (square, negative (0° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

VN·· inserts — 7 article numbers

Insert seat: VN·· (35° rhombic, negative (0° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

WN·· inserts — 4 article numbers

Insert seat: WN·· (80° trigon, negative (0° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

CC·· inserts — 3 article numbers

Insert seat: CC·· (80° rhombic, positive (7° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

DC·· inserts — 7 article numbers

Insert seat: DC·· (55° rhombic, positive (7° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

SC·· inserts — 4 article numbers

Insert seat: SC·· (square, positive (7° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

VB·· inserts — 7 article numbers

Insert seat: VB·· (35° rhombic, positive (5° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

VC·· inserts — 7 article numbers

Insert seat: VC·· (35° rhombic, positive (7° clearance)). The two dot positions are the chipbreaker and tolerance fields, confirmed at RFQ.

Source: Mongtec HSK-T Turning System catalogue, Ver 2026.

Frequently asked

Is HSK-T the same as HSK-A?

No. The taper and flange dimensions match, but the drive slot geometry differs: HSK-A is cut for the reversing torque of milling, HSK-T for the steady one-directional load of turning. An HSK-A holder should not be substituted into an HSK-T station.

What does the T size number mean?

It is the taper's nominal flange diameter in millimetres, the same convention as HSK-A. HSK-T100 therefore has a 100 mm flange.

Can I get a hand or insert size that is not listed?

Ask. The table above is the standard catalogue programme; special lengths, hands and insert seats are made to order at Mongtec's plant in Taichung.

Related

• HSK-T63 turning tool holders
• HSK-T tool blocks and adaptors
• Shrink fit chucks · Hydraulic chucks

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