Hob Blanks

Various metal cutting hobs blanks


  1. Shell Hob Blanks
  2. Shank Hob Blanks
    2a. Shank Single Hob Blanks
    2b. Shank Dual Hob Blanks
  3. Chamfer Hob Blanks


Dimensions: as per drawing/requested

Description: All gear hob blanks are manufactured to custom dimensions in accordance with agreed solution. Cemented carbide grades and designs are tailored to each customer based on individual needs and requirements.

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Hob blanks of cemented tungsten carbide grades are available for roughing and finishing operations in steels with hardness ranging from HRC30 to HRC65. Hyperion Materials & Technologies manufactures standard hob blanks in either a 12 teeth or a 15 teeth configuration.

We have developed cemented carbide hob blanks for demanding gear cutting and hobbing operations. Our hob blanks provide longer cutting life, better edge security, and higher productivity.



Grain Size (µm)

Binder (%)


TRS (N/mm2)

Compressive Strength (N/mm2)

Density (g/cm3)

H10F 0.8 10 92.1 4500 6300 14.5
AM50 0.6 7 93.4 4800 7400 14.7
H6F 0.8 6 93.2 3500 6900 14.9

Benefits of Using Hyperion Cemented Carbide Gear Hobs

  • Reduction in electrical discharge machining (EDM) wire cutting (creates stronger edge)
  • Preformed hob blanks reduce manufacturing costs by more than 50%
  • Preformed hob blanks can reduce inventory needs and provide quicker lead times
  • Our cemented carbide grade offering results in longer tool life, higher productivity, and less grinding for resharpening
  • Our cemented carbides exhibit consistent quality and performance - every time.


Hyperion cemented carbide gear hob blanks


øD1 (mm)

H1 (mm)

Grade H6F

Grade AM50

25 30 50 60 65 Nonferrous applications Steel applications
32 30 50 60 65 Nonferrous applications Steel applications



Cemented Carbide Grade*

Use to Cut These Metals

Cemented Carbide Grades per Metal Type

ISO 85-450 HB

All types of steels

Unalloyed steels

Alloyed steels

Cast steels

excluding steel with austenitic structure

ISO 120-450 HB

Stainless steel austenitic

Austenitic-ferrite steel

Cast steel (duplex)

ISO 150-480 HB

Grey cast iron (GCI)

Cast iron with spheroidal graphite

Malleable cast iron (MCI)

Nodular cast iron (NCI)

Compacted graphite iron (CGI)

Austempered ductile iron (ADI)

ISO 45-75 HRC

Hardened steel

Cast iron materials

Chilled cast iron

*The machinability of materials varies depending on alloying elements, heat treatment, and manufacturing processes.


Your Hyperion salesperson can offer their expertise in selecting the gear hob blank and cemented carbide best suited to solve your needs.


Did you know you can recycle your cemented carbide with Hyperion?  Visit our recycling page or contact us for details.