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All 77 Mongtec quick-change clamping fixture models

Mongtec publishes 77 quick-change clamping fixtures — SK external clamping, HJ / HN / HK internal expansion, HMC machining-centre hydraulic and HG / HM gear fixtures. Run-out ≤ 0.01 mm, ±0.5 mm workpiece tolerance, HRC 58-62. Mongtec Precision is a Taiwanese brand, designed and engineered in Taichung, Taiwan.

Ask engineering which size fits your part →

How to pick a size

Start from the diameter you need to hold. External clamping (SK) grips the part on its outside diameter; internal expansion (HJ, HN, HK) expands inside a bore. Each model covers a clamping range rather than a single size, and inside that range the rubber module absorbs ±0.5 mm of part-to-part variation — which is why this style of fixture suits bar-fed and robot-loaded work where a three-jaw or spring collet would clamp off-centre.

The fixture is standard; the flange is not. Every model connects to the machine through a flange matched to your spindle nose. Send the machine model and spindle nose designation with your enquiry and the correct flange is quoted with the fixture.

SK series — external clamping, pull-back — 8 models

Model	Clamping range	Clamping force	Max speed
SK32	5-32 mm	70 kN	7,000 rpm
SK42	5-42 mm	80 kN	6,000 rpm
SK52	5-52 mm	94 kN	6,000 rpm
SK65	5-65 mm	105 kN	6,000 rpm
SK80	5-80 mm	115 kN	5,000 rpm
SK100	16-100 mm	150 kN	4,500 rpm
SK120	40-120 mm	140 kN	4,000 rpm
SK160	40-160 mm	150 kN	4,000 rpm

SK (W) series — external clamping, push-to-close — 8 models

Model	Clamping range	Clamping force	Max speed
SK32(W)	5-32 mm	70 kN	7,000 rpm
SK42(W)	5-42 mm	80 kN	6,000 rpm
SK52(W)	5-52 mm	94 kN	6,000 rpm
SK65(W)	5-65 mm	105 kN	6,000 rpm
SK80(W)	5-80 mm	115 kN	5,000 rpm
SK100(W)	16-100 mm	150 kN	4,500 rpm
SK120(W)	40-120 mm	140 kN	4,000 rpm
SK160(W)	40-160 mm	150 kN	4,000 rpm

SK (MZ) Mini series — external clamping, pull-back — 6 models

Model	Clamping range	Clamping force	Max speed
SK32(MZ)	5-32 mm	70 kN	7,000 rpm
SK42(MZ)	5-42 mm	80 kN	6,000 rpm
SK52(MZ)	5-52 mm	94 kN	6,000 rpm
SK65(MZ)	5-65 mm	105 kN	6,000 rpm
SK80(MZ)	5-80 mm	115 kN	5,000 rpm
SK100(MZ)	16-100 mm	150 kN	4,500 rpm

HJ series — internal expansion — 11 models

Model	Clamping range	Clamping force	Max speed
HJ2000XXS	8-13 mm	42 kN	6,000 rpm
HJ2000XS	13-19 mm	42 kN	6,000 rpm
HJ2000X	16-21 mm	42 kN	6,000 rpm
HJ2000	20-28 mm	42 kN	6,000 rpm
HJ2100	26-38 mm	42 kN	5,000 rpm
HJ2200	36-54 mm	85 kN	5,000 rpm
HJ2300	50-80 mm	105 kN	5,000 rpm
HJ2400	69-100 mm	150 kN	5,000 rpm
HJ2500	100-130 mm	150 kN	4,500 rpm
HJ2600	130-160 mm	150 kN	3,500 rpm
HJ2700	160-192 mm	150 kN	3,500 rpm

HJ (W) vulcanized clamping devices (XZL) — 11 models

Model	Clamping range	Clamping force	Max speed
HJ2000XXS(W)	8-13 mm	42 kN	6,000 rpm
HJ2000XS(W)	13-19 mm	42 kN	6,000 rpm
HJ2000X(W)	16-21 mm	42 kN	6,000 rpm
HJ2000(W)	20-28 mm	42 kN	6,000 rpm
HJ2100(W)	26-38 mm	42 kN	5,000 rpm
HJ2200(W)	36-54 mm	85 kN	5,000 rpm
HJ2300(W)	50-80 mm	105 kN	5,000 rpm
HJ2400(W)	69-100 mm	150 kN	5,000 rpm
HJ2500(W)	100-130 mm	150 kN	4,500 rpm
HJ2600(W)	130-160 mm	150 kN	3,500 rpm
HJ2700(W)	160-192 mm	150 kN	3,500 rpm

HN series — internal expansion — 8 models

Model	Clamping range	Clamping force	Max speed
HN3000	20-28 mm	42 kN	6,000 rpm
HN3100	26-38 mm	42 kN	6,000 rpm
HN3200	36-54 mm	85 kN	6,000 rpm
HN3300	50-80 mm	105 kN	6,000 rpm
HN3400	70-120 mm	100 kN	5,000 rpm
HN3500	100-130 mm	140 kN	4,500 rpm
HN3600	130-160 mm	150 kN	3,500 rpm
HN3700	160-200 mm	150 kN	3,500 rpm

HK series — internal expansion — 8 models

Model	Clamping range	Clamping force	Max speed
HK1000	20-28 mm	42 kN	6,000 rpm
HK1100	26-38 mm	42 kN	6,000 rpm
HK1200	36-54 mm	85 kN	6,000 rpm
HK1300	50-80 mm	105 kN	6,000 rpm
HK1400	70-120 mm	110 kN	5,000 rpm
HK1500	100-130 mm	140 kN	4,500 rpm
HK1600	130-160 mm	150 kN	3,500 rpm
HK1700	160-200 mm	150 kN	3,500 rpm

HMC series — machining-centre hydraulic — 6 models

Model	Clamping range	Clamping force	Max speed
HMC7000	20-28 mm	—	—
HMC7100	26-38 mm	—	—
HMC7200	26-54 mm	—	—
HMC7300	50-80 mm	—	—
HMC7400	70-125 mm	—	—
HMC7500	125-160 mm	—	—

HG series — gear hobbing — 6 models

Model	Clamping range	Clamping force	Max speed
HG5000	20-28 mm	—	—
HG5100	26-38 mm	—	—
HG5200	36-54 mm	—	—
HG5300	50-70 mm	—	—
HG5400	75-120 mm	—	—
HG5500	100-130 mm	—	—

HM series — gear grinding — 5 models

Model	Clamping range	Clamping force	Max speed
HM6100	26-38 mm	—	—
HM6200	36-50 mm	—	—
HM6300	46-65 mm	—	—
HM6400	60-95 mm	—	—
HM6500	90-130 mm	—	—

Source: Mongtec Quick Change Collet Chucks catalogue, Ver 2026. Clamping force and admissible torque for the HMC series are published without a stated unit and are confirmed in writing at RFQ; HG body dimensions are supplied with the quotation.

Frequently asked

What is the difference between the SK, HJ, HN and HK series?

SK clamps externally on the part's outside diameter. HJ, HN and HK all expand inside a bore — they differ in body form, clamping force and the length of bore they engage, so the right one depends on the part's wall thickness and how much bore is available to hold.

Can one fixture cover several part sizes?

Yes, within its published clamping range, and beyond that by changing the clamping module rather than the fixture. That is the point of the design: the expensive part stays on the spindle, the consumable part changes.

Does Mongtec make non-standard sizes?

Yes. Non-standard clamping modules and bespoke fixtures are a standing part of the range — send the part drawing and the machine and Mongtec quotes against it.

Get a quotation

Send the machine and spindle nose, the diameter you need to hold and how the parts are loaded. Dimensioned drawings are supplied by email once the enquiry is open.

Request a quotation →

Quick-change clamping overview · All Mongtec article numbers · All angle head models