Can anyone think of a Locost way to get linear motion on a 1.75" diam steel shaft??
Could do a plain bearing in brass/bronze but anyone else think of anything else?
How often is it going to be moved?
You could use a phosphor bronze bearing which are normally boiled in oil every so often to re-oil them or if it is low use, then a nylon bush with
grease.
I used steel rod ends on my gearshift but they kept on jamming. I changed to nylon rod ends (rs componants) and never had a problem after that.
Good tip Nitram I have the same problem - parts now ordered from RS at an extortionate cost!!
Back to the original problem 2" abs class T pipe (high pressure thick walled) has a bore of slightly greater than 1.75".
Trouble is you can only buy it in 6m sticks unless you can perswade a friendly pipe installer to supply.
We use Fusion to supply pipe but do not use this size.
yep, linear ball bearing unit. we use them on shuttles on drill and peg machines at work, they last for ages (for ever on a car)
Liam, how hard is the shaft? Those linear ball units are good but really must be used on hardened shafts. A composite lined linear bushing may be more
suitable.
Alan
its not for the car, and its a 1.75" CDS tube. It need not be heavy duty just quite tight/accurate and of couse Locot I have all the materials
for a plain bearing and might give it a go first. i might cut an oil goove internal also.
I'll let you know how it goes