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Vhu - Basic operations carried out by Vhu head NAREX
205bh - Fine boring head NAREX
205bh - Fine boring head NAREX

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Product description Vhu - Universal boring and facing head


Vhu - legend

Vhu - legend

5 - safety pin

6 - braking ring

27 - slide

34 - adjusting screw with scale

41 - worm with scale

46 - body

50 - stopping bar

VK - exchangeable taper shank

Basic machining operations

  • Boring

  • Facing

  • Internal recessing

  • Recessing

  • Back facing

  • Machining of external cylindrical surface

  • Boring of taper hole

  • Machining of external taper

  • Thread cutting


Vhu – as a boring device – considerably increases possibilities of boring, drilling and milling machines. These heads are suitable for precision boring of cylindrical holes and for machining of external cylindrical surfaces. The boring head Vhu by means of an automatic slide feed makes possible facing, backfacing and taper machining. The slide feed is adjustable in three or four grades and is stopped on adjustable dog by the pin clutch. The feed is derived from the rotary motion of the head, if one of the feed is derived from the rotary motion of the head, if one of the feed is adjusted, the pin of the clutch is put in and the brake ring is held by means of the stop bar.

The screw (34) serves for quick adjusting of side and on the contrary the worm with the scale is used for fine adjusting of precision boring. (1DIV= slide movement of 0,05 mm).

These heads are delivered with primary accessories in wooden boxes. The taper shank is exchangeable and it isn't a component of primary accessories. Therefore it´s necessary to order taper shank as a special item separately. The boring heads Vhu110/Vhu160 are modifications of the basic Vhu 80 resp. Vhu 125 types, they have extended slides and screws.




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 Vhu NAREX ?

800 RPM by Vhu 36, 500 RPM by Vhu 56, Vhu 80, Vhu 110, Vhu 125 and Vhu 160

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

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.

  • 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.

  • Is delivered head Vhu 20?

Head Vhu 20 is not produced even delivered, this head is substituted by Vhu 36.

  • Are provided repairs of head Vhu 32?

Head Vhu 32 is old type and its production was ended 30 years ago. Spare parts are not produced and repairs are not provided.

  • New modification heads Vhu have new tool equipment, is delivered old original tool equipment as well?

It is delivered only like spare parts and in range which is on the stock. We try to substitute it by new tools with VBD, which you can find in prospect Innovation change Vhu.

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






  Vhu - Universal boring and facing head - Catalogue (PDF)
  • Universal boring and facing head (PDF)






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



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  • Display of products lines (quick reference)

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