10-09-2017, 08:30 PM
I've little practical experience with hydraulics other than component change (aviation industry) and automotive clutch/brake systems, but....
The practical side of me says as long as you have a seal to cope, the only other issue with re-using your current piston would be the clearance and potential "cocking" etc
Something as simple as a teflon ring near the end of the piston would prevent the cocking, and would also prevent the piston itself contacting the bore (ie it would be a improvement over the original). The teflon rings are commonly used to prevent o-ring extrusion so shouldn't be hard to get hold of, but wouldn't be hard to make one and just cut it to allow fitment.
Regarding the seal, I recently had a single direction cup seal for my power hacksaw ram custom made by a small company near my work.
They make them on a small CNC machining center out of various materials depending on application and have various standard profiles. I've no relationship with them other than being a happy customer. Its pretty much a one man operation - Steve's details are on the website contact page.
Took them the old seal, said what it was for and the dimension of the bore it fitted into and picked it up the next morning - $20 if I wanted just the one, so I got a spare for $30 total.
Not particularly cheap for a rubber cup seal, but the convenience was well worth the money.
Hytech Seals
Steve
The practical side of me says as long as you have a seal to cope, the only other issue with re-using your current piston would be the clearance and potential "cocking" etc
Something as simple as a teflon ring near the end of the piston would prevent the cocking, and would also prevent the piston itself contacting the bore (ie it would be a improvement over the original). The teflon rings are commonly used to prevent o-ring extrusion so shouldn't be hard to get hold of, but wouldn't be hard to make one and just cut it to allow fitment.
Regarding the seal, I recently had a single direction cup seal for my power hacksaw ram custom made by a small company near my work.
They make them on a small CNC machining center out of various materials depending on application and have various standard profiles. I've no relationship with them other than being a happy customer. Its pretty much a one man operation - Steve's details are on the website contact page.
Took them the old seal, said what it was for and the dimension of the bore it fitted into and picked it up the next morning - $20 if I wanted just the one, so I got a spare for $30 total.
Not particularly cheap for a rubber cup seal, but the convenience was well worth the money.
Hytech Seals
Steve