Gudgeon pin material

Gudgeon pin material

This topic has 9 replies, 8 voices, and was last updated 16 July 2016 at 21:17 by Neil Wyatt.

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16 July 2016 at 15:57 #246824
John Rudd
Participant
@johnrudd16576
Any recommendations for material for a gudgeon pin around 16mm in dia for a piston in an air compressor?

Was thinking maybe EN8 steel……

The piston is ally and so is the conrod, I think the pin is fully floating…..

Edited By John Rudd on 16/07/2016 15:58:06
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16 July 2016 at 15:57 #29611
John Rudd
Participant
@johnrudd16576
16 July 2016 at 17:11 #246830
Michael Gilligan
Participant
@michaelgilligan61133
John,

If it was me … I would "Make From" a commercial Gudgeon Pin.

Assuming that there are any knowledgeable Store-Men left

MichaelG.
16 July 2016 at 17:18 #246833
John Rudd
Participant
@johnrudd16576
Michael,

Nice idea, I was trying to avoid buying…lol…

Having thought about it, arent they hardened and ground finished?
16 July 2016 at 17:29 #246835
JasonB
Moderator
@jasonb
On the model IC engines I usually go with silver steel which is the material that is commonly specified.

J
16 July 2016 at 17:32 #246836
Chris Evans 6
Participant
@chrisevans6
They should be hardened and ground. A piston supplier should be able to sort one out for you or try a bit of linear shafting from a bearing supplier. No need to use circlips you can turn PTFE buttons for the ends if it is easier.
16 July 2016 at 18:52 #246840
Sam Longley 1
Participant
@samlongley1
a shock absorber shaft
16 July 2016 at 19:59 #246844
Roy M
Participant
@roym
Can't recommend strongly enough, the purchase of a ceramic turning tip. You can turn 62Rc easily. And remove quite a lot of material if you are patient, even convert 1" shank to 20mm on milling cutters.
16 July 2016 at 20:43 #246855
JohnF
Participant
@johnf59703
I would go with EN24T and use as supplied. Won't be fully hardened but it will/should last a long time.
16 July 2016 at 21:17 #246859
Neil Wyatt
Moderator
@neilwyatt
Hardened and tempered silver steel should be fine, drill it out for lightness and make domed brass 'mushrooms' if you can't source PTFE.

Neil
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