hydraulic hay unroller ?s

i wanting to build a unroller that spins the bale and slings the hay off to the side and have a few questions.
1. would this motor fit the bill? my tractor only puts out about 6gpm http://www.surpluscenter.com/Hydraulics/Hydraulic-Motors/Low-Speed-High-Torque-Hydraulic-Motors/11-75-cu-in-VICKERS-CS-12-HYD-MOTOR-9-2764-D.axd

2. how many rpm should i be aiming for?
3.what could i use for spears without breaking the bank.

thanks for the help.
 
FWIW- different idea: use a final drive from a small combine, drive the input shaft with a hyd motor, and instead of mounting a wheel on the hub, use a flat steel plate with two prongs on it. You could mount the entire unit on a loader or 3ph.
 
i had one and unless you want the last 4ft or so of bale diameter to just be dropped and fed that way they worked. you need something to come in all time bale turns to really tear it apart from what i found out. no longer do hay or cows now so the unit i had sold. they need to be held from both ends also to work a lot better,then its hard to get even rotation on bale when you grab it to pick up good luck save your money and time and get the pulltype styles out today would be my suggestion. good luck again
 

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