In your last few hydraulic maintenance emails,
we've talked about repairing, testing and storing
hydraulic cylinders.
Today I want to explain some of the ways you can
increase the service life of your hydraulic cylinders.
A major cause of reduced service life is damage to the
surface of the cylinder rod. Dents and gouges in the
rod's hardchrome surface reduces the life of
the rod and wiper seals.
Not only that, it gives dust and other contaminants
an easy path into the hydraulic system, increasing
the load on the systems filters.
The potential for damage to cylinder rods and wiper seals
is an ever present problem - especially for users of mobile
hydraulic equipment.
One way to minimize this problem is to install a protective
shroud or bellows to any cylinders exposed to impact damage.
This helps protect the rod's surface from dings and scratches.
In abrasive or corrosive environments, it also helps extend
rod and wiper seal life and provides an extra barrier to the
ingression of contaminants via the cylinder rod.
That said, the use of a protective shroud is an ideal
that's not practical in all cases. So in your next
hydraulic maintenance email in a few days time, I'll
explain an alternative that offers similar
life extension benefits.
Yours for better hydraulics knowledge,
Brendan Casey
Author of 'Insider Secrets to Hydraulics'; and
'Preventing Hydraulic Failures'.
http://www.hydraulicsupermarket.com/books.html
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