HILMA.UC 125 - 5-Achs-Spannsystem


5-axis clamping system


HILMA.UC machine vice

Concentric, modular, precise Jaw width 125 mm

The clamping system HILMA.UC is suitable for numerous clamping tasks and is used for machining dimensionally stable workpieces in single or multiple clamping systems.

Small workpieces as well as large plates can be clamped and machined without large interference contours. Even when production requirements change, there is no need to invest in new clamping devices. 

Special features of the HILMA.NC machine vise family:

  • universal      modular system enables versatile clamping options
  • stabile          no deflection thanks to closed force flow
  • compact      reduced design ensures optimum accessibility 
  • Precise        true to position due to pull-down mechanism 

Detailed information on the HILMA.NC product family:

Catalogue HILMA.UC

5-axis clamping system
HILMA.UC 125 - 5-Achs-Spannsystem
HILMA.UC Icon Betätigung
Betätigung mechanisch
HILMA.UC Icon Backenbreite
Backenbreite 125 mm
HILMA.UC Icon Spannprinzip
Spannprinzip zentrisch
HILMA.UC Icon Zugkraft
Zugkraft 52 kN
HILMA.UC Icon Niederzugmechanismus
Niederzug- mechanismus

Maximum flexibility - 5-axis clamping system

The HILMA.UC machine vise

HILMA.UC machine vise
HILMA.UC machine vise

Advantages & Options

Flexible concentric clamping

HILMA.UC Hohe Stabilität
HILMA.UC Hohe Stabilität

High stability

  • Closed force flow - no bending force effect in the base - no deflection 

  • Separation of adjusting and tension spindle - optimum force flow

  • Pull-down clamping jaws - active workpiece pull-down

HILMA.UC Optimale Zugänglichkeit
HILMA.UC Optimale Zugänglichkeit

Optimum accessibility

  • Compact design - good accessibility - optimum tool length can be used due to smallest interference contour

  • Raiser as accessory - improved accessibility for special clamping tasks

HILMA.UC Zentrisches Spannsystem
HILMA.UC Zentrisches Spannsystem

Concentric clamping system

  • Centre clamp, optimal for 5-axis applications

  • precise with repetitive accuracy

  • split mounting option

HILMA.UC Flexible Spannweite & Backenprogramm
HILMA.UC Flexible Spannweite & Backenprogramm

Flexible jaw opening & range of clamping jaws

  • Standard jaw opening from 0 - 200 mm, extension sets for extended jaw opening up to 600 mm

  • Conclusive range of clamping jaws for workpieces in all shapes and surfaces from round to square, small to large and smooth or uneven

  • Can be adapted to differently-sized workpiece geometries in just a few steps

More about clamping width

HILMA.UC Individuelle Befestigung
HILMA.UC Individuelle Befestigung

Individual fastening

  • fastening with sliding block on T-slot table

  • fastening via clamping claws

  • fastening from above through the base by means of screws

  • quick change by means of STARK retractable nipple directly or via adapter plate in the STARK zero point clamping system

  • thread adapters for alternative zero point clamping system manufacturers

  • standard fast closing plates available

More about fastening

Flexible clamping widths

Extension sets for maximum jaw openings

The concentric clamping system can be divided in the middle and extended. The clamping range can be extended up to 600 mm by using different tension spindle/clamping nut combinations. A closed force flow is created between the tension spindle, adjustment element and clamping jaw, thus allowing the modular design. The base plate remains without a bending force being applied. The extended clamping system can be mounted directly on the machine table, raisers or adapter plates. 

Video - adjusting clamping range

Standard Set 0 – 200mm

scope of delivery

HILMA.UC Lieferumfang Standard Spannweite
HILMA.UC Lieferumfang Standard Spannweite

Extension set 400

Extended clamping range

HILMA.UC Verlängerungsset 400
HILMA.UC Verlängerungsset 400 (Spannmutter 300, Spannmutter 400, Verlängerung Verstellspindel 200)

Extension set 600

Maximum clamping range

HILMA.UC Verlängerungsset 600
HILMA.UC Verlängerungsset 600 (Spannmutter 500, Spannmutter 600, Verlängerung Verstellspindel 400)
HILMA.UC Spannweite 50 mm
kurze Zugspindel, kurze Spannmutter (Standardlieferumfang)
HILMA.UC Spannweite 200 mm
lange Zugspindel, lange Spannmutter (Standardlieferumfang)
HILMA.UC Spannweite 300 mm
lange Zugspindel, Spannmutter 300 mm, Verstellspindel 200 mm
HILMA.UC Spannweite 400 mm
lange Zugspindel, Spannmutter 400 mm, Verstellspindel 200 mm
HILMA.UC Spannweite 500 mm
lange Zugspindel, Spannmutter 500 mm, Verstellspindel 400 mm
HILMA.UC Spannweite 600 mm
lange Zugspindel, Spannmutter 600 mm, Verstellspindel 400 mm

Fastening options

Options for fastening on the machine table

Stable Fastening on the machine table is of great importance to ensure precise machining. Fastening options can be selected depending on the type of processing and the individual requirements. 

Direct mounting

  • Direct mounting with Sliding block longitudinal on 5-axis T-slot table
    Direct mounting with Sliding block crosswise on 3-axis T-slot table
  • Direct mounting with retractable nipples in the STARK zero point clamping system
  • Direct mounting with screws from  above on hole pattern
    Direct mounting with screws from  above on hole pattern with raiser on right image
  • Direct mounting in a 96 × 96 mm fast closing system

Adapter plate

  • Fastening on adapter plate
  • Fastening via adapter plate in zero point clamping system
  • Fastening via adapter plate with clamping claws
  • Fastening via adapter plate on hole pattern

Operating principle HILMA.UC

Clamping principle - closed force flow

1. Preset clamping range

The clamping range is preset until both clamping jaws are in contact with the workpiece without building up clamping force. 

By turning the adjustment spindle clockwise, both adjustment elements move to the centre. 

2. Mount tension spindle

The tension spindle is mounted hand-tight before the clamping force is applied by turning it clockwise using a torque wrench.

The force on the clamping jaws above the workpiece stop is introduced into the workpiece via the outer edges of the clamping claws. 

The clamping force develops proportionally to the torque.

3. Clamping process

Most of the pulling force is applied directly to the workpiece. The adjustment spindles serve as counter bearings.

In the process, the adjustment elements are clamped to the base plate and the system is completely mechanically locked.

Due to the closed power flow from tension spindle to adjustment spindle, the base remains almost without bending force being applied and tilting of the adjustment elements is avoided.

Application examples and clamping jaws

Application examples

The jaws used have a major influence on the machining result. The range of clamping jaws enables reliable blank and finished part clamping in all shapes from round to square and from small to large.

For smooth clamping jaws and clamping jaws with GripPin, support bars are required as workpiece stops. 

HILMA.UC Anwendung Niederzugspannbacke
HILMA.UC Anwendung Niederzugspannbacke

1. Pull-down clamping jaws

Suitable for clamping pre-machined or smooth surfaces (second side). The bending element of the jaw clamps the workpiece with pull-down and presses it onto the support surface with repetitive accuracy. 

HILMA.UC Spannbacke 125 mm & 60 mm, glatt
HILMA.UC Anwendung Spannbacke 125 mm & 60 mm, glatt

Clamping jaw 125 & 60 mm, smooth

For clamping pre-machined or smooth surfaces (second side). The clamping jaw has a clamping width of 125 mm. The narrow version of the clamping jaw has a clamping width of 60 mm and serves to optimise accessibility for narrow workpieces. The maximum clamping depth is 28 mm. Support bars are required for the clamping jaw. 

HILMA.UC Spannbacke mit GripPins 125 mm & 60 mm
HILMA.UC Anwendung Spannbacke mit GripPins 125 mm & 60 mm

Clamping jaw with GripPins 125 & 60 mm

For secure clamping of uneven surfaces such as saw cuts, blanks and cast parts. The clamping jaw has a clamping width of 125 mm, the maximum clamping depth is 28 mm. Attention: Marks of the pins on the workpiece. 

HILMA.UC Spannbacke mit Rundspannbolzen
HILMA.UC Anwendung Dreipunktspannung mit Rundspannbolzen

4. Clamping jaws with round clamping bolts

Three-point clamping
For vertical clamping of cylindrical workpieces with a diameter of 30 bis 200 mm. The diameter can be flexibly adjusted by repositioning the inserts. Three- and four-point clamping can be realised. Attention: Clamping marks on the workpiece possible.

HILMA.UC Spannbacken mit Rundspannbolzen
HILMA.UC Anwendung Spannbacken mit Rundspannbolzen

5. Clamping jaws with round clamping bolts

For vertical clamping of cylindrical workpieces with a diameter of 30 bis 200 mm. The diameter can be flexibly adjusted by repositioning the inserts. Three- and four-point clamping can be realised. Attention: Clamping marks on the workpiece possible.

HILMA.UC Prismenbacken
HILMA.UC Anwendung Prismenbacken

6. Prism jaws

For clamping cylindrical workpieces with a diameter of 8 - 40 mm. Workpieces can be clamped horizontally or vertically. With vertical clamping it is possible to place two workpieces in the outer prisms at the same time. Support bars are optional for the clamping jaw. 

HILMA.UC Spannbacke weich
HILMA.UC Anwendung Spannbacke weich

Soft clamping jaws

Soft jaw for customer insertion of workpiece-specific clamping contours.

Support bars

The support bar creates a workpiece stop and at the same time determines the clamping depth for the workpiece. According to the desired clamping depth, the support bar can be aligned and inserted into the matching slot of the clamping jaw. 

HILMA.UC Auflageleisten
HILMA.UC Auflageleisten
Product videos



Set clamping range

Clamping jaws


Detailed information on the HILMA.UC product family can be found in the following downloads:


5-axis clamping system Modular, flexible, precise, jaw width 125
Identifiant : WM-021-008
Format : PDF
Taille : 17 Mo


Mode d'emploi Etau machine HILMA.UC
Identifiant : WM-021-500
Format : PDF
Taille : 4 Mo

HILMA Etaux pour centre d’usinage

HILMA - Etaux pour centre d’usinage - Solution pour le gain de productivité
Identifiant : WM-021-001
Format : PDF
Taille : 2 Mo
HILMA Etaux pour centre d’usinage
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