Wear of the crosshead track in reciprocating compressors
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The stressed surface should be on the bottom, but the unstressed surface may develop a groove due to wear.
On the left is the cylinder end, on the right is the rod and crankshaft drive end; the front side is the second-stage cylinder on the 4m drive side
Measure the gap and check what the gap above is
What model of machine is it, and what size is the crosshead?
It is under force from both above and below; the primary force and the secondary force can be determined based on the direction of rotation. This is related to the concentricity between the piston rod assembly and the cylinder slide assembly. Additionally, the concentricity of the outer circle of the crosshead also plays a role