Bill in PA
Hot Rolled
- Joined
- Jan 25, 2011
- Location
- Fairfield, PA
I wasn't sure if I should post this question here or in the reconditioning forum.
Elgin Alpa (Italian) hydraulic surface grinder roughly 8 x 18", 10" wheel. Hydraulic oil lubricates the ways.
I was having much trouble grinding a job today. It was grinding heavier in one direction.
1. I put an indicator (.0005") on the table. Reading the indicator with the table traverse on, with the table moving to the left, the indicator reads zero across the length of the chuck. With the table moving to the right, the indicator reads +.001".
2. Disengaged the traverse, disconnected the cylinder, and leaving the hydraulics on: Using the hand wheel the indicator reads the same as #1.
3. Disengaged the hand wheel and leaving the hydraulics on: Pushing and pulling the table by hand, the indicator reads as #1.
4. Shut the hydraulics off: After several cycles of moving the table by hand, the indicator settles (may be a few tenths change, but much better).
I think it has always done this to some degree, but it was quite noticeable while grinding today. I bought the grinder in 2011. I changed the hydraulic oil, but I don't remember what viscosity I put in it. I have some empty 5 gallon buckets of tractor hydraulic oil from Wal Mart sitting around. I probably used that. I don't have the manual and I was never able to find any information about it. Maybe it should have way oil in the hydraulic system like my OD grinder does? There is ample oil coming off the ways at each end when running.
I don't see any adjustment/restrictors for the way lube lines.
Any ideas would be most appreciated.
Thanks,
Bill
Elgin Alpa (Italian) hydraulic surface grinder roughly 8 x 18", 10" wheel. Hydraulic oil lubricates the ways.
I was having much trouble grinding a job today. It was grinding heavier in one direction.
1. I put an indicator (.0005") on the table. Reading the indicator with the table traverse on, with the table moving to the left, the indicator reads zero across the length of the chuck. With the table moving to the right, the indicator reads +.001".
2. Disengaged the traverse, disconnected the cylinder, and leaving the hydraulics on: Using the hand wheel the indicator reads the same as #1.
3. Disengaged the hand wheel and leaving the hydraulics on: Pushing and pulling the table by hand, the indicator reads as #1.
4. Shut the hydraulics off: After several cycles of moving the table by hand, the indicator settles (may be a few tenths change, but much better).
I think it has always done this to some degree, but it was quite noticeable while grinding today. I bought the grinder in 2011. I changed the hydraulic oil, but I don't remember what viscosity I put in it. I have some empty 5 gallon buckets of tractor hydraulic oil from Wal Mart sitting around. I probably used that. I don't have the manual and I was never able to find any information about it. Maybe it should have way oil in the hydraulic system like my OD grinder does? There is ample oil coming off the ways at each end when running.
I don't see any adjustment/restrictors for the way lube lines.
Any ideas would be most appreciated.
Thanks,
Bill
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