Posted by ss55 on January 28, 2018 at 11:08:54 from (63.147.218.40):
In Reply to: Hydraulic motor posted by HNM on January 27, 2018 at 14:54:13:
The original PTO drive probably had a shear bolt for overload protection. The size of that shear pin will give you an idea of how much torque you need to deliver to the gearbox. Can you use the same shear bolt for overload protection or will you need to use a pressure relief valve or a slip clutch?
High torque low speed hydraulic motors are big, heavy and expensive due to their large displacement. It might cost less to add a V-belt or roller chain speed reduction and run a smaller displacement hydraulic motor at a higher speed.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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