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C
DL 20
DR 20

Material: HSS special.
Hardness: HRc 62+ -1
Ground faces and bore.
These knurls are always manufactured in accordance with demand

The following information will be required for the manufacture of concave knurls:
Tooth pattern
Inside diameter "B"
Outside diameter "A"
Width "E"
Pitch at mean diameter "dm"
Tooth angle
Radius
Material
Coating

 

 

 

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