JERRY M. - The "Technical Term" for that type of bearing wear is "Brinnelling", which is similar to a hardness test by the same name which uses a 10 MM dia carbide ball and a test bar of known hardness, the test bar is held in a hand-held tool and struck with a hammer and using a calibrated scope the diameter of the dimples in both the bar and the material being tested are compared and hardness calcutated by the dimples relative size. Company I used to work for did HUNDREDS of Brinnel tests every DAY.
STEVE B. - It's facinating to figure up how much FORCE a hyd system can create isn't it! Once you get cylinders up in the 2-1/2" to 4-5 inch range the forces get CRAZY! More pump PSI really helps.
Looks like I get to play with the 70 & 42" frt blade agan today. I let the snow pile up last week and this weekend and went out and cleared the 3 inches +/- from the drive Tuesday. Even with tracks from cars & trucks I was able to clean right down to almost 100% bare concrete. Even with only about 100# total added weight on the back of the 70 and worn-out chains no real traction problems. The 70 & blade will NEVER replace the Super H & loader but it's great on these little snows. Sounds like it would be overwhelmed by the snows in the North-East too.