looking for after market hydraulic cylinder for PM

[Jody McFarland]

Hello All,

Hoping someone can help me find an alternative to buying the actual "part #" cylinder from Powermatic.

the price is absolutely ridiculous.

https://www.ereplacementparts.com/cylinder-p-439732.html

https://www.amazon.com/Jet-Powermatic-6294179-719A-Cylinder/dp/B018M5L1GG

It's an older model Pm 719A mortiser. The hydraulic cylinder actually aids more in the control of downward motion than up. Without it working properly, the geared teeth are far apart enough that you get "drop" real glitchy on down motion.

These cylinders are not much different than what is on every hatchback in your cars and those parts are like $35.

Found a couple places that advertised for $100 approx, but all out of stock.

The cylinder itself doesn't seem to have any specs on it to look up.

Thank you,
Jody

[Maurice Mcmurry]

Easylift has been helpful for me when I need gas springs. Your part may be more complicated.

[Bill Dufour]

I do not think that is a hydraulic cylinder. It looks like a gas strut . You need to disconenct it and use a scale to lift up on whatever weight drops down. That force, or more, is how much the replacement cylinder needs to have. You also need extened and retracted length between center of sockets.
I reccomend buying an adjustable cylinder of the correct length. The force can be reduced by bleeding off some of the compressed nitrogen. Not really possible to put any back in.
Bill D
first one i found, probably too long?
https://www.amazon.com/Adjustable-Heavy-Duty-Cabinet-Projects-Bracket/dp/B08RZ4P3D9

This may help with measuring

https://www.gasstrutaustralia.com.au/product-category/gas-struts/general-use-gas-struts/ (https://www.amazon.com/Adjustable-Heavy-Duty-Cabinet-Projects-Bracket/dp/B08RZ4P3D9)

[Bill Dufour]

The picture looks like a standard socket at each end. I think they are all the same 10mm size ball. Not really a critical fit at such low speeds.
looks like 8, 10, 13 and 16mm are commonly used.
Bill D

[Edward Weber]

Yes, it's a gas strut used as a return for the head.

It looks like the same one that my Grizzly has for $34
https://www.grizzly.com/products/g0448/parts
Hope this helps

[Jody McFarland]

I do not think that is a hydraulic cylinder. It looks like a gas strut .



Thank you for the links and suggestion.

My manual calls it a "cylinder" in the parts. I looked up a bunch of places and found another manual (though may have been the "T") that did list it as a "hydraulic". I am not particularly familiar, which such things, so not sure which it is.


Yes, it's a gas strut used as a return for the head.

It looks like the same one that my Grizzly has for $34
https://www.grizzly.com/products/g0448/parts
Hope this helps

Thank you, I will check it out. Clearly I need to take some measurements. Just $34 vs $199 is quite a difference. Our shop has owned this for quite a few years and I have never really cared for it. Last week, I completely dismantled it and cleaned the ways and gibs, tightened everything up and it works smoother. I think this will help, but reluctant to spend a bunch on something I'm not sure is going to be helpful in the long run.