Threaded core set

Threaded core versions

The base of the threaded cores form a workpiece which already has a splined shaft profi le. This gives rise to different thread core variants, according to customer demands and technical specifications:

Single-piece threaded core

threaded core workpiece - with spined shaft profile

Single-piece threaded core - without cooling

A

Single-piece threaded - with cooling

B

Single-piece threaded core - as sleeve

C

Threaded core holder + insert

Threaded core holder + insert - without cooling

D

Threaded core holder + insert - with cooling

E

Threaded core holder + 3-part insert - with cooling

F

Threaded core sizes

Servomold threaded cores are available in different dimensions. Depending on thread size and cavitiy distance, various system sizes are used: (ED = external diameter / SP = diameter of splined shaft profile)

  GWK010 GWK020 GWK030 GWK035 GWK040 GWK050 GWK060 GWK070 GWK080 GWK100 GWK120
Ø Max. in mm 5 8 10 12 15 20 30 40 50 60 70
Ø ED / SP 5/6 8/10 11/14 13/16 16/20 23/28 32/38 42/48 52/58 62/68 72/78

 

Threaded core material

Servomold threaded cores are standardly made of Böhler M340. This high performance plastic mold steel is eminently suitable for threaded cores:

  • Excellent corrosion resistance properties
  • Good hardenability (Servomold hardens this steel with 56 ±1 HRC)
  • High wear resistance

Functional areas of threaded cores

1
2
3
  • 1 Guide area with splined shaft and guide thread
  • 2 Guide diameter for ball cages
  • 3 Contour area with contour thread

Custom dimensions and special materials available upon request!

Threaded core customer samples

Special version - Thread Ø 60mm - Pitch 4,08 mm | GWK120

C

Thread Ø 32,7 mm - Pitch 3,56 mm | GWK060

C

Special length - Thread Ø18,5 mm - Pitch 3,05 mm | GWK050

C

Thread Ø 3 mm - Pitch 0,5 mm | GWK010

D

Thread Ø 8mm (M8x1) - Pitch 1 mm | GWK040

F

Thread Ø 40,5 mm - Pitch 4,07 mm | GWK080

B

Thread Ø 14mm - Pitch 1,44 mm | GWK040

B

Special length - Thread Ø 18,7 mm - Pitch 1,42 mm | GWK040

A

Thread Ø10 mm - Pitch 5 mm | GWK030

C

Thread Ø 6mm - Pitch 1 mm | GWK040

E

Threaded core cooling

Servomold threaded cores can be cooled in various ways depending on the application :

  • In multi cavity molds via rotary cooling element RKE
  • In multi cavity molds via fi xed, cooled inner core
  • For single , double - and fourfold unscrewing via rotary feedthrough SDD

 

Special solutions on request!

 

T = Translation F = fixed TR = Translation + Rotation A = For single, double and fourfold unscrewing - B = For multi cavity molds

1
2
3
  • 1 SDD - Rotary feedthrough
  • 2 RKE - Rotational cooling element
  • 3 STI - Fixed inner core

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