Recent content by Fracture Toughness

found a similar pump online:

I can only answer some of the questions: 1. Short inline spline + coupling shaft to the engine gearbox; not an offset V-belt drive. 2. It’s pressure-controlled variable displacement: a pressure compensator senses outlet pressure and adjusts the yoke/swashplate to vary displacement. There’s also...

the last two failures appear to develop crack on the same location, the 1st failure is not in the slot. these 3 failures are on 3 different parts and different years

Thank you! The first failure was a fine crack (part still intact) after a couple of hundred hours of operation. The second failure was a complete crack (in 2 pieces) after a couple of thousand hours of operation. The third failure (similar to 2nd failure) should be the one shown in the photo. I...

We have a molded carbon graphite seal that is used in an inline axial piston, variable displacement hydraulic pump. One of our customers reported that, when using the “A” parts in the past, they only needed to replace them due to normal wear. However, after switching to our parts, the...