help converting pto phd to hyd phd

[J_J]

You could perhaps run the case drain to the remote valve OUT/return port as that is going to tank. Dont run the drain to a hose that can be closed off.

You could put a low pressure hyd gage in the return hose and see what the pressure is.

From your thumb, run a new case drain hose back with the other hoses for the IN and return.

Other attachments you might use can use the same hose .

Yes, you can look for a larger hyd motor with out a case drain line. The larger the displacement the lower the rpm. , but more torque.

 

[oldnslo]

AK9,
I believe Eaton Char-Lynn corp. offers their Low speed high torque motors with a high pressure shaft seal option on some models. This option removes the need for the case drain as long as the return line pressure stays below the shaft seals rated pressure. I believe their 2000, 4000 , 6000 series all have this option.

Other companies probably offer the same feature, I just am not familiar with their product lines.

 

[bdog]

Case drain is no big deal. Just run a third line to your motor that runs to tank. On my auger I have a 1/4" case drain line. You could probably put a QD on it without problems. They are not recommended because if you forget to hook it up it will be a problem but if you need one you need one.

I can't stress enough to get a big motor. In the last three weeks I have augered nearly 9,000 feet of holes and I can assure you there is nothing more frustrating than an undersized motor. If the motor is too small it will not be able to turn the auger and you will have to drill a few inches, come out of the hole to clean the auger, go back in, etc.

Take a look at this website Drill holes fast with Belltec products -- Belltec Industries, Inc. they list their hydraulic augers and the torque specs. I would design yours to meet or exceed what they have with regards to torque or you will be sorry.

 

[J_J]

Here is a large 14 cu in motor with 5850 in lbs of force. It is expensive.

14.9 cu in CHAR-LYNN 104-1042 HYD MOTOR at $537

487 ft lbs

12.5 cu in CHAR-LYNN 109-1110 HYDRAULIC MOTOR at $249

Those Belltec augers, are up n the 2000 ft lbs and rpm lower than 100 rpm. You can bet they ain't cheap.

Just for comparison. http://compare.ebay.com/like/191037942870

 

[ditzel]

ak9 how did this project turn out for you? I'm toying with the idea of making something like this for the fel on my Mahindra.