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Vh - Precision boring head NAREX
205bh - Fine boring head NAREX
205bh - Fine boring head NAREX

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Product description Vh - Precision boring head


Vh - legend

Vh - legend

1 - body

2 - slide

3 - operating screw

5 - carrier pin

10 - changing of accuracy adjustment

11 - screws for fixing shanks VK

VK - exchangeable taper shank type VK360 and VK801

Accuracy of adjustment

  • 1div=0,02 mm/Ø (rough setting)
    1div=0,0025mm/Ø (precision setting)

Basic operation

  • boring of the holes with accuracy IT7

Enlargement of possibilities

  • For Vh 70 can be used set of boring tools VDSK 16mm or individual boring tools for Vhu

  • For Vh 110 and Vh 140 can be used set of boring tools VDSK 25 mm or individual boring tools for Vhu


Vh – precision boring heads are used for precision boring of cylindrical holes in the given range of diameters. The range is Ø6-225 mm and with special tools can be up to 400 mm. These heads can be used for boring and milling machines, NC-machine tools, etc. Taper shank type VK360 (for Vh70) and taper shank VK801 (for Vh 110, Vh 140) are exchangeable – taper shank isn't part of the head's body, it must be ordered separately.

These heads are composed of a body (1) and of an exchangeable taper shank type VK360 and VK801 which is attached to the head by four screws (11). In the body is slide (2). Slide movement depends on operating screw (3). When there is started bolt (10) is accuracy of adjustment lower – by turning operating screw for 1 division is slide shifted for 0,01 mm (boring diameter is bigger for 0,02 mm). By tightening of the operating screw is accuracy of adjustment in function where 1 division = 0,0025mm/Ø (slide is shifted for 0,00125mm).

For enlargement of boring possibilities can be delivered set of boring tools VDSK 16 (for Vh70), VDSK 25 (Vh 110 and Vh140).




General Dealers Czech Republic


  • M & V, spol. s r.o. (Vsetín)

4. května 288, CZ-755 01 Vsetín

tel:  420-571 484 817

fax: 420-571 413 126

  • TTI, s.r.o. (Brno)

Údolní 40, CZ-602 00 Brno

tel: 420-543 216 868

fax: 420-543 249 300

  • Stim Tools, a.s. (Brno)

Bratislavská 49, CZ-602 00 Brno

tel: 420-545 212 092

fax: 420-545 211 163

  • HOFMEISTER s.r.o. (Plzeň)

Mezi ploty 12, CZ-326 00 Plzeň

tel: 420-377 242 058

fax: 420-377 243 161

  • BOS HK a.s. (Teplice)

Přítkovská 152, CZ-417 12 Teplice-Proboštov

tel:  420-417 560 721

fax: 420-417 560 385

  • HANÁK NÁŘADÍ, s.r.o.

Osvobození 129, CZ-763 16 Fryšták

tel: 420-577 110 711

fax: 420-577 110 733


  • NTV - Naradie, s.r.o.

Farská 86/2

SK-019 01 Ilava

phone: 421-424 466 316

fax: 421-424 464 279

  • M&V, Slovakia spol. s r.o.

Vsetínská cesta 1487-9

SK-020 01 Púchov

phone: 421-424 634 548

fax: 421-424 634 549


Sumracná 27

SK- 821 02 Bratislava

phone: 421-243 338 080

fax: 421-243 335 501


Horská 1311/2

SK-958 06 Partizanské

phone: 421-387 491 373

fax: 421-387 491 373


Frequently asked questions (FAQ)

  • With which accuracy is possible to bore with heads NAREX?

Mainly with an accuracy of IT7 and higher, only boring head 205 with an accuracy of IT6 up to IT5.

  • What the smallest slot is possible to bore by heads?

Minimum diameter of boring slot is around 6mm. For smaller diameters firm NAREX MTE does not deliver tools. We can say that the minimum diameter depends on tool not on the head. Head is restricted by revolutions and this way is restricted cutting speed on the tool.

  • What heads can be used in automatic cycle on NC and CNC machines?

All except universal boring heads Vhu which need direct staff. There are operation during buttoned shog on Vhu. All other operations - boring can be realized on NC and CNC machines.

  • Are given maximum revolutions for boring heads Vh NAREX?

1.500 RPM by Vh 70, 800 RPM by Vh 110, 500 RPM by Vh 140.

  • What is difference between boring head and universal boring head Vhu?

Boring head is designed only for boring of cylindrical slots. Universal boring head is for operations which need cross tool movement during head turning. This makes possible spotface slots faces and bore taper slots.

  • How deep can be slots bored?

Usually to the deepness according to heads accessories. There are bars, holders and boring tools. Their length you find in relevant catalogue or here (Basic operations with boring head Vh).

  • Is it possible to use boring heads on usual table drills or stand drills?

Boring head needs spindle machine rigidity, table rigidity and clamping of the part. Furthermore needs machine feed with possibility of its switch-off in needed place. If the rigidity is insufficient the boring result is not reliable.

  • What is difference between taper shank VK360 and VK801?

Taper shanks VK360 have flange diameter 70mm. Shanks VK801 have flange diameter 110mm. VK360 are designed for Vhu 36, Vh 70, Vhs 50, and Vhs 10-125. Taper shanks VK801 are designed for boring heads Vhu 56 to Vhu 160, Vh 110, Vh 140 and Vhs 40-180. There is also type VK800 R8 but it is designed only for head Vhu 56 and especially for North American market.


Product repairing



NAREX MTE standardly provides repairs of produced and delivered products. There are guarantee repairs or normal non guarantee repairs. During repair is product dismounted, there are found defective parts and up to it is determined range and price of repair. After customer´s repair price confirmation are defected parts exchanged, product is again mounted and tested.

Repair speeding

For repair speeding and lower price is suitable to enclose to repair order letter with information about problems (during which conditions defects occurs or indicate required range of repair).

Repair ordering

For repair ordering you should send product for repair, order of repair and specifications of defects on our address:


sales department

Moskevska 659/63

CZ-101 00 Prague 10
Czech Republic

Information about repair

About repair you will be informed by e-mail or by phone, with any questions you can contact export department on phone: +420 246 002 249, e-mail:, fax: + 420 246 002 335


NAREX MTE s.r.o.

Moskevska 659/63

CZ-101 00 Prague 10
Czech Republic




+420-246 002 321

+420-246 002 249

+420-246 002 335

+420-246 002 343



  Technical support is at the disposal of you on phone +420 246 002 249 or you can contact us by e-mail: or by fax: +420 246 002 335.


Basic technical information you can find also on reference service.


NAREX MTE s.r.o.

Moskevska 659/63

CZ-101 00 Prague 10
Czech Republic




+420-246 002 321

+420-246 002 249

+420-246 002 335

+420-246 002 343


  Catalogue of boring tools - Download (PDF)
  • Catalogue of boring tools (PDF)






  Vhs,Vh - Boring heads - Catalogue (PDF)
  • VHS & Vh boring heads (PDF)






  205bh - Fine boring head - Catalogue (PDF)
  • Precision boring head 205bh (PDF)



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  • Display of products lines (quick reference)

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