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Close-up hirth serrations

Hirth serrations

Hirth serration rings and specialized serration services

This form-locking, self-centering and easily detachable connection component connects shafts, disks, rotors, wheels and cranks with remarkable precision and maximum torque capacity. The design facilitates backlash-free operation and is suitable when changing forces. Furthermore, this connection component is also easy to release and transmits torque wear-free with a positional accuracy of 1 – 2 angle seconds.

Hirth serration rings and specialized serration services
Your benefits

  • Accuracy: high degree of indexing and repeat accuracy
  • Highest standards in precision positioning
  • Time saving: easy release connection 
  • Quick assembly and disassembly
  • Long service life 
  • Maintenance-free
  • Reduced alignment work: components are self-centering
  • Expertise offering a comprehensive range of services 
  • Safety: zero backlash
  • Strength: high torque capacity
  • Reduced weight and installation space

Our product portfolio includes:

  • Standard Hirth serration rings
  • Customer specific Hirth serration rings and parts
  • Machining of a Hirth serration onto customer supplied components

 

Customized serration service Standard Hirth serration rings Customized Hirth  serration rings
Torque

up to 15.000
kNm

  up to 15.000
​kNm
Component diameter up to 1.600 mm 50 to 900 mm up to 1.600 mm
Component weight up to 4.500 kg   up to 4.500 kg
Component length up to 4.500 mm   up to 4.500 mm
Number of gear teeth max. 720 24 to 720 max. 720
Indexing accuracy 1 - 2 angle
seconds
1 - 2 angle seconds 1 - 2 angle
seconds
Repeat accuracy < 0.001 mm < 0.001 mm < 0.001 mm
Radial and axial run-out < 0.001 mm < 0.001 mm < 0.001 mm

 

Hirth serration rings

Standard and tailor-made diameters

Whether it is a standard size that is always in stock or a tailor-made serration ring, our Hirth serration rings are the ideal positioning element. Hirth serrations enable you to position your work­pieces or products with positive locking and with the highest precision enabling you to produce parts of the highest quality standards while achieving maximum productivity levels. 

Applications

Primarily used to position rotationally symmetrical components in the machine tool industry and in general mechanical engineering, it is also possible to use a Hirth serration ring as a connection component, typical applications include:

  • Rotary indexing tables, turret heads and disk turrets in machine tools
  • Connections in metrology, robot technology and medical technology
  • Connections in aerospace technology
  • Shafts, wheels and rotors in gear units, pumps, fans, compressors and turbines
  • Technical applications

Customized serration service

Machining of a Hirth serration onto customer supplied components

Flexible in terms of your requirements 
Applying customized serration to your equipment can be achieved up to a diameter of 1,600 mm.

Connecting components with high strength and precision
The customers’ machine component receives a Hirth serration. This component then can connect and precisely position shafts, wheels, disks, cranks and other parts in many areas of mechanical engineering to one another.

Applications

Typical applications are usually found in the machine tool industry and in general mechanical engineering markets, however other applications include: 

  • Shafts, wheels and rotors in gear units, pumps, fans, compressors, turbines and rolling mills
  • Rotary indexing tables, turret heads and disk turrets in machine tools
  • Connections in gas and steam turbines
  • Flanged connections on shafts
  • Connections in metrology, robot technology and medical technology
  • Connections in aerospace technology
  • Crank or joint shafts
  • Substitution of complex, single-piece forged parts

Contact

     

    t +49 7321 37 4602

    Service

      Saving you time during product development and the later stages of production. Our engineers assist from the very outset, during the product development stage, providing professional expertise when you need it most. But that isn’t all… 

      Our service offering includes:

      • Engineering services
      • Design consultation
      • Manufacturing consultation
      • Calculations
      • Quality assurance

      Publications

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