Wohlhaupter Precision Boring Tools and Modular Systems

Wohlhaupter precision boring heads and modular MultiBore tooling systems for CNC machining centers: technical selection of tooling packages by drawing.

Wohlhaupter: German manufacturer of precision boring systems

Founded in 1929 in Germany, Wohlhaupter is part of Allied Machine & Engineering Corp. The manufacturer specializes in high-precision boring heads, modular MultiBore tooling systems and precision holders for CNC milling and jig-boring machines in heavy and aerospace manufacturing.

Founded in 1929 in Frickenhausen, Baden-Wuerttemberg (Germany)
Member of Allied Machine & Engineering Corp. international group
Inventor of the world's first universal boring and facing head UPA
Pioneer of the modular MultiBore tooling connection since 1973

Wohlhaupter MultiBore modular tooling system

The MultiBore modular system with MVS cylindrical connections combines master shanks, reducers, extensions and boring heads into a rigid assembly. Color-coded interface components simplify tool configuration for deep-hole boring operations with repeatable micron precision.

Patented high-rigidity cylindrical MVS modular connection
Color-coded size identification for fast tool assembly
Modular extensions and reducers for deep-hole boring duties
Maximum clamping rigidity and runout repeatability under cut

Wohlhaupter UPA universal facing and boring heads

The classic UPA series heads (UPA 3, UPA 4, UPA 5-S 6) perform boring, facing, internal recessing and thread grooving. Automatic radial slide feed with selectable reverse feed enables high-precision plane facing and internal groove machining on manual and CNC machines.

Automatic radial cross-feed mechanism with stepped feed rates
Versatile facing, recessing, grooving and taper turning operations
Heavy-duty frames UPA 3, UPA 4, UPA 5-S 6 across work diameters
Mechanical feed reversal and automatic travel limit release

Wohlhaupter Balance precision finish boring heads

Wohlhaupter Balance precision finish heads (series 464, 465, 537) integrate an auto-balancing system for high-speed finish boring. Vernier scale setting achieves 0.002 mm diametrical adjustment precision, eliminating roundness and taper errors at tight hole tolerances.

Integrated auto-balance system for high-speed cutting spindle cycles
Vernier dial adjustment sensitivity down to 0.002 mm on diameter
Through-tool coolant direct to the cutting edge for thermal control
Vibration-damped body achieving fine finishes down to Ra 0.4

Wohlhaupter 3E Tech and DigiBore digital boring heads

Wohlhaupter 3E Tech and DigiBore digital heads incorporate direct opto-electronic measuring systems to read radial cutter displacement. Digital readout displays eliminate human dial-reading errors and reduce machine setup downtime during tight-tolerance boring jobs.

Direct opto-electronic measurement of cutting insert radial traverse
Digital display resolution down to 0.002 mm on bore diameter
Complete elimination of lead-screw backlash setting errors
3E Tech series featuring docking external digital display units

Wohlhaupter twin-cutter rough boring heads

Wohlhaupter twin-cutter heads (series 209, 210, 226, 227) deliver maximum metal removal rates in heavy rough boring of forged billets and unmachined workpieces. Symmetrical and stepped cutter configurations distribute chip loads evenly for high stability in blind and through holes.

Twin-cutter design for synchronized or stepped depth cutting
Heavy-duty stock removal on forged and welded heavy structures
Serrated slide clamping surfaces ensuring rigid insert positioning
Boring diameter capability from 19.5 mm up to 3255 mm (Alu-Line)

Wohlhaupter master shanks and MVS spindle adapters

Wohlhaupter master shanks interface machine tool spindles with the MultiBore tooling system with micron runout accuracy. Toolholder standards include HSK-A (DIN 69893), steep taper SK (DIN 69871), MAS BT and polygonal taper PSC shanks for high-speed machining centers.

Standard spindle shanks: HSK-A 63/100, SK 40/50, BT 40/50 and PSC
Direct conversion to modular MVS 50, MVS 63 and MVS 80 interfaces
Precision ground tapers delivering runout accuracy within 0.003 mm
Internal high-pressure coolant channels rated up to 70 bar

Wohlhaupter indexable boring inserts and service parts

Indexable carbide inserts with proprietary WHT coatings are engineered for boring steels, stainless alloys, ductile iron and titanium. Standard replacement components include cartridge pockets, clamping screws, vernier adjustment screws, slides and service rebuild kits.

Carbide inserts with engineered WHT PVD/CVD hard coatings
Cermet, cubic boron nitride CBN and polycrystalline diamond PCD inserts
Replacement cartridge pockets, clamp wedges and setting screws
Fast-wear component matching by tool assembly drawing and part ID

Wohlhaupter precision boring engineering and industrial manufacturing

German toolmaker Wohlhaupter has engineered high-precision boring tools and machine accessories since 1929. Operating as part of Allied Machine & Engineering Corp., the brand serves global aerospace, automotive, power generation and precision machinery manufacturers.

Wohlhaupter solutions focus on tight-tolerance internal bore finishing, high concentricity and superior surface finishes. The product range includes universal facing heads, modular boring blocks, digital fine boring tools and spindle tooling shanks for modern machining centers.

MultiBore modular system and high-rigidity MVS connection

Introduced in 1973, the MultiBore modular connection set an industry benchmark for interchangeable tooling. The cylindrical MVS joint with radial locating pins and angled clamping screws delivers high static and dynamic rigidity comparable to solid monolithic tools.

Standardized color coding across MVS size categories allows machine programmers and shop operators to configure matching extensions, reducers and adapters quickly, enabling deep-hole boring with minimal tool vibration and deflection.

UPA universal facing and boring heads with automatic cross-feed

Classic UPA heads (series UPA 3, UPA 4 and UPA 5-S 6) perform radial facing and boring operations directly during spindle rotation. The internal mechanical transmission provides selectable feed increments, reverse feed and an automatic release mechanism at travel limits.

UPA tools handle internal grooving, forward and back facing, cylindrical boring and taper generation on horizontal and vertical boring mills. Precision replacement gears, drive cams, worm wheels and trip dogs maintain feed mechanism accuracy over decades of service.

Balance finish heads and 3E Tech digital readout systems

Wohlhaupter Balance precision heads (series 464, 465 and 537) integrate an internal counterweight mechanism that offsets radial slide imbalance. Auto-balancing eliminates centrifugal chatter at high cutting speeds, achieving Ra 0.4 surface finishes in IT6 bore classes.

In 3E Tech and DigiBore digital boring heads, radial displacement is measured directly by an integrated opto-electronic scale. Diameters display with 0.002 mm resolution, eliminating lead-screw backlash and manual micrometer dial misreadings during tool changeover.

Twin-cutter rough boring heads for heavy stock removal

For high metal removal rates on forged billets and structural blanks, Wohlhaupter offers series 209, 210, 226 and 227 twin-cutter rough boring heads. Serrated slide mountings lock toolholder blocks securely under heavy, interrupted cutting forces in deep bores.

Heads configure for synchronized two-edge cutting to double table feed, or stepped cutting to split heavy depths of cut across both inserts. For diameters up to 3255 mm, the lightweight Alu-Line series minimizes spindle bearing wear.

Technical maintenance of master shanks and spindle taper fits

High boring precision depends directly on the cleanliness and condition of master taper shanks and tool seating faces. Particulates or fretting marks on HSK, SK or BT tapers increase radial runout, cause premature insert wear and push hole diameters out of tolerance.

Shop routines require cleaning machine spindles and tool shanks with lint-free wipes prior to insertion. Specialized grease applied to MVS thread connections and micrometer adjusters prevents seizing, galling and fretting corrosion under cutting loads.

Damped deep-hole boring operations with overhang ratios up to 10xD

When machining deep coaxial bores in complex gearboxes or compressor housings, suppressing tool chatter is essential. Wohlhaupter modular setups incorporate heavy solid carbide extensions and anti-vibration bars that maintain stability at overhang ratios up to 10xD.

Solid carbide shanks possess three times the elasticity modulus of conventional tool steel, drastically reducing bending deflection. High-pressure internal through-coolant delivers fluid directly to cutting edges to flush chips cleanly from blind bores.

Application of indexable carbide inserts with WHT coatings

Indexable carbide inserts with proprietary WHT multilayer coatings are engineered for maximum abrasion resistance and high thermal stability. Specially designed chipbreaker geometries ensure reliable chip evacuation during both finish boring and heavy roughing.

For advanced aerospace alloys and hardened steels, Wohlhaupter offers inserts in cermet, cubic boron nitride (CBN) and polycrystalline diamond (PCD). These cutting grades maintain consistent surface roughness and hold diameter tolerances over long production runs.

Bore geometry quality control and radial runout inspection

Achieving IT6 and IT7 hole tolerances requires systematic quality control of boring head assemblies. Prior to starting cutting cycles, machine operators verify radial and axial runout on a presetting gage using high-sensitivity dial test indicators.

Combining Balance auto-balancing heads with 3E Tech digital readout units minimizes hole polygonality and bore ovality. Regular calibration of measuring attachments guarantees repeatable machining precision across multiple shifts.

Tooling package selection and replacement parts by factory data

We supply replacement assemblies, wear components and complete Wohlhaupter modular setups matched by tool catalog numbers and assembly drawings. Available items include insert cartridges, setting screws, clamp wedges, slides and master shanks with WHT coated inserts.

Quotations detail pricing, international delivery terms and shipping schedules. Full technical documentation and factory material test reports accompany every dispatched tooling batch.

Wohlhaupter and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Wohlhaupter and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.