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Mongtec HSK-T tool blocks and adaptors

Q: Which shank sizes are covered?

The catalogue programme covers 20x20, 25x25 and 32x32 mm square shanks on HSK-T50, T63 and T100 tapers. Other sizes are made to order.

Q: Can one block take both right- and left-hand tools?

The V, N and T styles are listed as separate right- and left-hand article numbers; the H style is neutral. The hand is the letter before the length in the article number.

36 article numbers in four styles — SBV, SBH, SBN, SBT — on HSK-T50, HSK-T63 and HSK-T100 tapers for 20×20, 25×25 and 32×32 mm square shanks. Mongtec Precision is a Taiwanese brand headquartered in Taichung, Taiwan.

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Mongtec HSK-T tool blocks and adaptors — dimensioned drawing — Dimensioned drawing from the Mongtec catalogue. The dimension letters are the columns of the table below.

What a block does

A tool block carries a conventional square-shank turning tool and presents it to the machine on an HSK-T taper. The tool itself stays whatever the shop already buys — a standard 25×25 external holder, a boring bar, a parting blade — while the block gives it the taper-and-face location and the automatic clamping of an HSK-T station.

That is the cheapest route onto an HSK-T machine. Rather than replacing a whole tool crib with integral HSK-T turning holders, a shop buys blocks for the shank sizes it runs and keeps its existing tooling. The trade is rigidity: an integral holder has one joint to the spindle, a block has two.

Specification

Interface	HSK-T50 · HSK-T63 · HSK-T100 (turning execution)
Styles	SBV · SBH · SBN · SBT
Shank sizes	20×20 · 25×25 · 32×32 mm square
Hand	R (right) · L (left) · N (neutral, SBH style)
Article numbers	36
Brand	Mongtec Precision Inc.

Article numbers — dimensions in mm

Each style is dimensioned with its own set of symbols, printed here exactly as the catalogue prints them (L, L1…L4 lengths · B1…B3 widths · H1…H3 heights · D1 diameter · G thread). Refer to the dimension drawing for the style. A dash means the catalogue does not print that dimension for that article number.

SBV blocks — HSK-T50 / HSK-T63 / HSK-T100 — 10 article numbers

Article no.	L	L1	L2	B1	B2	B3	H1	H2	H3	G
HSK50TQSBV2020RQ105	105	60	15	20	25	43.5	25	25	5	M10
HSK50TQSBV2020LQ105	105	60	15	20	25	43.5	25	25	5	M10
HSK63TQSBV2020RQ105	105	60	15	20	32	43.5	33	32	13	M10
HSK63TQSBV2020LQ105	105	60	15	20	32	43.5	33	32	13	M10
HSK63TQSBV2525RQ115	115	70	20	25	32	45	30	30	5	M12
HSK63TQSBV2525LQ115	115	70	20	25	32	45	30	30	5	M12
HSK100TQSBV2525RQ160	160	110	20	25	37	59	48	44	23	M12
HSK100TQSBV2525LQ160	160	110	20	25	37	59	48	44	23	M12
HSK100TQSBV3232RQ160	160	110	20	32	40	68.5	45	44	15	M14
HSK100TQSBV3232LQ160	160	110	20	32	40	68.5	45	44	15	M14

SBH blocks — HSK-T50 / HSK-T63 / HSK-T100 — 8 article numbers

Article no.	L	L1	B1	B2	B3	H1	H2	G
HSK50TQSBH2020NQ100	100	80	20	25	43.5	27.5	—	M10
HSK50TQSBH2020NQ130	130	110	20	25	43.5	27.5	—	M10
HSK63TQSBH2020NQ100	100	80	20	32	43.5	30	—	M10
HSK63TQSBH2525NQ90	90	75	25	32	53	40.5	29.5	M12
HSK63TQSBH2525NQ120	120	105	25	32	53	40.5	29.5	M12
HSK100TQSBH2525NQ115	115	90	25	32	59	48	37	M12
HSK100TQSBH2525NQ160	160	135	25	32	59	48	37	M12
HSK100TQSBH3232NQ115	115	85	32	40	68.5	57	43	M14

SBN blocks — HSK-T50 / HSK-T63 / HSK-T100 — 10 article numbers

Article no.	L	L1	L2	L3	L4	D1	B1	B2	B3	H1	H2	G
HSK50TQSBN2020RQ120	120	60	83.1	72.8	52.8	—	20	25	43.5	35	35	M10
HSK50TQSBN2020LQ120	120	60	83.1	72.8	52.8	—	20	25	43.5	35	35	M10
HSK63TQSBN2020RQ120	120	60	83.1	72.8	52.8	—	20	32	43.5	35	35	M10
HSK63TQSBN2020LQ120	120	60	83.1	72.8	52.8	—	20	32	43.5	35	35	M10
HSK63TQSBN2525RQ120	120	70	85.2	70.8	45.8	90	25	32	53	39	39	M12
HSK63TQSBN2525LQ120	120	70	85.2	70.8	45.8	90	25	32	53	39	39	M12
HSK100TQSBN2525RQ145	145	70	102.9	88.5	63.5	—	25	32	59	43	43	M12
HSK100TQSBN2525LQ145	145	70	102.9	88.5	63.5	—	25	32	59	43	43	M12
HSK100TQSBN3232RQ150	150	85	109.9	89	59	—	32	37	68.5	48	43	M14
HSK100TQSBN3232LQ150	150	85	109.9	89	59	—	32	37	68.5	48	43	M14

SBT blocks — HSK-T50 / HSK-T63 / HSK-T100 — 8 article numbers

Article no.	L	L1	L2	D1	B1	H1	H2	H3	G
HSK50TQSBT2020RQ105	105	60	—	—	20	35	43.5	15	M10
HSK50TQSBT2020LQ105	105	60	—	—	20	35	43.5	15	M10
HSK63TQSBT2020RQ105	105	60	—	—	20	35	43.5	15	M10
HSK63TQSBT2020LQ105	105	60	—	—	20	35	43.5	15	M10
HSK63TQSBT2525RQ125	125	70	40	90	25	43	53	18	M12
HSK63TQSBT2525LQ125	125	70	40	90	25	43	53	18	M12
HSK100TQSBT2525RQ160	160	110	—	—	25	48	59	23	M12
HSK100TQSBT2525LQ160	160	110	—	—	25	48	59	23	M12

Which article number fits your machine?

The drawing above is the published catalogue drawing, and the dimension letters are the columns of the table below. What Mongtec confirms for you is the interface on your machine, the reach for the operation, and the final article number. Send the machine and the operation; the check is free.

Send my machine and get the article number →

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

Check the block's clamping height against your tool. A block is cut for one nominal square-shank size; a 25×25 tool will not clamp correctly in a 20×20 seat and shimming a smaller shank up to a larger seat costs the rigidity the block exists to provide. Tell Mongtec the shank sizes you actually run.

Frequently asked

What is an HSK-T tool block for?

It adapts a square or round tool shank to an HSK-T taper, so a conventional turning tool can be loaded automatically into an HSK-T station instead of being bolted to the turret.

Which shank sizes are covered?

20×20, 25×25 and 32×32 mm square shanks, on HSK-T50, T63 and T100 tapers. Other sizes are made to order.

Can one block take both right- and left-hand tools?

The SBV, SBN and SBT styles are listed as separate right- and left-hand article numbers; SBH is neutral. The hand is the letter that follows the shank size in the article number.