About HNK

Used HNK CNC Machines for Sale

Resell CNC is your Simple. Reliable. and Trusted.® source for used HNK large-frame CNC machine tools — including vertical turning lathes, horizontal boring mills, floor-type boring machines, double-column machining centers, CNC horizontal lathes, and special purpose machines. We carry HNK models across the full product range, from the VTC and NT vertical turning centers through the HB, HFB, and HKDB horizontal boring mill platforms to the HPM and HPF double-column machining centers.

HNK Machine Tool Co., Ltd. is a specialized developer and manufacturer of large-frame CNC machine tools with over 60 years of history. Headquartered in South Korea, HNK is recognized as the only domestic Korean manufacturer with comprehensive design technology spanning all categories of large machine tools. The company produces vertical turning lathes with table diameters from 1,000 mm through 10,000 mm and beyond, horizontal boring mills with spindle diameters from 110 mm through 150 mm, floor-type boring machines for the largest workpieces, double-column machining centers with column distances up to 6,000 mm, and horizontal lathes for components such as ship engine crankshafts, wind turbine shafts, and propeller shafts. HNK plays a critical role in supplying essential equipment for national key industries including shipbuilding, power generation, and defense. US distribution is provided through authorized dealers offering sales, service, and applications support for the North American market.

Looking to sell your HNK? Resell CNC buys used HNK machines nationwide: any model, any generation, any condition. Free appraisal within 24 hours, competitive offers, and we handle all rigging and transportation. Call (844) 478-8181 or email sales@resellcnc.com.

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HNK Vertical Turning Lathes & Horizontal Lathes

The VTC series is HNK's flagship vertical turning platform, spanning table sizes from the compact VTC-10/12F through the massive VTC-100/160. VTC models are available with C-axis, live milling spindle, automatic tool changers (up to 24 positions), grinding attachments, and universal angle heads. The NT series provides high-speed vertical turning for smaller components. The HL series horizontal lathes handle oversized workpieces for shipbuilding and energy applications, including crankshafts, turbine shafts, and propeller shafts.

HNK Boring Mills & Double-Column Machining Centers

The HB series horizontal boring mills (HB-110 through HB-150LH) feature table-type and long-horn configurations for heavy-duty boring, milling, drilling, and tapping of large castings and fabrications. The HFB floor-type and HKDB column-type boring machines extend reach for the largest workpieces. The HPM and HPF double-column machining centers provide large-envelope milling with column distances up to 6,000 mm and table load capacities reaching 50,000 kg.


Founded	1960s, South Korea (60+ years of operation)
Headquarters	South Korea
US Distribution	Authorized dealers (sales, service, and applications support)
Best Known For	CNC vertical lathes, horizontal boring mills, floor borers, double-column centers
Popular Models	VTC-16/20, VTC-25/40, VTC-40/50, HB-130, HB-150, HPM-30L, NT-16/20
CNC Controls	Fanuc (18i, 31i, 32i), Siemens 840D
Industries Served	Shipbuilding, power generation, defense, oil & gas, mining, heavy equipment, aerospace

What to Look for When Buying a Used HNK

HNK machines are large-frame machine tools built for the heaviest industrial applications. Robust cast iron construction and precision assembly deliver the rigidity required for turning, boring, and milling workpieces weighing tens of tons. Here is what to inspect on used units.

On vertical turning lathes, inspect the table, ram, and crossrail. HNK VTC machines carry workpiece loads from several tons to over 100 tons. Verify table bearing runout and axial play. On machines with elevating crossrails, test W-axis for smooth, parallel lift. Inspect the ram for scoring and gib wear. On models with C-axis and milling spindle, verify indexing accuracy and spindle runout.

On horizontal boring mills, check the spindle, column, and table. The HB series uses spindles from 110 mm through 150 mm with long nose extensions. Measure spindle runout at full extension. On long-horn models (HB-150LH), test extended ram deflection under load. Verify table positioning accuracy and check column straightness for wear.

On double-column machining centers, test the gantry and spindle. HPM and HPF machines feature massive columns with distances up to 6,000 mm and table loads to 50,000 kg. Verify crossbeam flatness and gantry squareness. Test the spindle and cycle the tool changer through every position. On machines with automatic attachment changers, test each attachment for runout.

Confirm the control platform and options. HNK machines use Fanuc (18i, 31i, 32i) or Siemens (840D) CNC controls. Verify the control boots cleanly, all axes home and reference correctly, and optional equipment (live spindle, ATC, grinding attachments, angle heads, through-spindle coolant) functions properly.

HNK VTC Series Vertical Turning Lathes

VTC Compact & Mid-Range (10/12 through 20/25)

The VTC-10/12F and VTC-12/16 are HNK's compact vertical turning centers with table diameters from 1,000 mm to 1,600 mm. The VTC-16/20 and VTC-16/20R step up to 2,000 mm swing with optional C-axis and milling. The VTC-20/25 extends capacity further. All feature heavy-duty cast iron construction with available live tooling. The "R" designation indicates a redesigned compact configuration.

VTC Large-Format (25/40 through 100/160)

The VTC-25/40 through VTC-100/160 handle the largest workpieces in heavy industry. The VTC-40/50 and VTC-50/60 are widely traded, serving shipbuilding, power generation, and oil field applications. Large-format models support ATC (up to 24 positions), automatic attachment changers, C-axis, grinding heads, and universal milling attachments for complete machining in a single setup.

HNK NT Series Vertical Turning

The NT series (NT-10/12F, NT-16/20) provides high-speed vertical turning capability. Designed for applications requiring faster table rotation speeds (up to 450 RPM on the NT-10/12F) and quicker cycle times than the VTC platform. NT machines are suited for production environments machining medium-sized components such as flanges, rings, housings, and bearing races.

HNK HB Series Horizontal Boring Mills

The HB series is HNK's table-type horizontal boring mill platform. The HB-110/110M offers 110 mm spindle diameter. The HB-130 family (130S, 130, 130X, 130C, 130CX) provides 130 mm spindle capacity with multiple configurations. The HB-150 line (150, 150X, 150LH, 150LHX) delivers 150 mm capability, with "LH" long-horn variants for deep concentric boring. All HB models feature precision spindle bearings, hardened box ways, and heavy-duty table construction.

HNK Floor Boring, Double-Column & Horizontal Lathes

The HFB floor-type boring mills eliminate table size limitations, with the workpiece fixtured on a floor plate while the boring head traverses on a column. The HKDB and HKDB-F column-type machines provide high precision for fixed-table applications. The HPM-L double-column centers (30L through 60L) offer column distances to 6,000 mm with table loads to 50,000 kg. The HPF fixed-beam variants maximize rigidity. The HL horizontal lathes handle oversized rotating components for shipbuilding and energy.

How to Sell Your Used HNK

HNK machines hold strong resale value thanks to heavy-duty construction, the brand's reputation in large-workpiece machining, and consistent demand from shipbuilding, energy, and heavy equipment manufacturers. VTC vertical lathes and HB boring mills are in particularly high demand.

Resell CNC buys used HNK machines: every model, every generation, nationwide.

Contact us — call (844) 478-8181 or email sales@resellcnc.com.
Free appraisal within 24 hours — no obligation.
Accept the offer — we handle rigging, transport, and logistics.

Frequently Asked Questions About Used HNK Machines

Are used HNK machines reliable?

Yes. HNK has over 60 years of experience manufacturing large-frame machine tools. Heavy cast iron construction, precision-ground ways, and quality components deliver long service life in critical industries including shipbuilding, power generation, and defense.

What is the difference between HNK and Hankook?

HNK Machine Tool and Hankook Machine Tools are separate Korean companies. HNK specializes in large-frame machines (VTLs, boring mills, double-column centers, floor borers). Hankook focuses on heavy-duty horizontal lathes and vertical boring mills. Both operate independently.

What CNC control does HNK use?

HNK machines are equipped with Fanuc (18i, 31i, 32i series) or Siemens (840D) CNC controls depending on model and customer specification. Both platforms are widely supported with extensive training and service resources available in North America.

What should I inspect before buying a used HNK?

On VTLs, check table bearing condition, crossrail parallelism, and ram wear. On boring mills, verify spindle runout at full extension and test table accuracy. On double-column centers, verify gantry squareness and spindle performance. For all models, confirm control function and test optional equipment.

What HNK models hold their value best?

VTC-series vertical turning lathes (especially VTC-16/20 through VTC-50/60 with C-axis and milling), HB-130 and HB-150 boring mills, and HPM double-column machining centers maintain strong resale values. Call (844) 478-8181 for current valuations.

How do I sell my used HNK?

Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy every HNK model nationwide: VTC vertical lathes, NT turning centers, HB and HFB boring mills, HKDB machines, HPM/HPF double-column centers, and HL horizontal lathes. Free appraisal within 24 hours.