5165842 BUCKET CAT330GC hydraulic cylinder
for Caterpillar hydraulic cylinder, we can produce excavator
,bulldozer,etc.
we use high quality seal kits
After assemble we will go to test bench with at least 300 bar,
if it is qualified, then we will go to packing ,then send out.
we will check the rod visually, check for damages, cracks, and
scratches, on the chrome surfaces.
Reject if you find scratches with your nail on the chrome surface.
Reject if you detect chrome peeling, pinpoints, or color difference
on the chrome surface.
Check for the cast material gaps.
we also use micro meter to check the diameter of the rod.
reject if the measure value are different from each other by more
than 0.03mm
try to stay on the middle of the tolerance, reject if the measure
value is out of tolerance by more than 0.02 mm.
coating thickness tester : check the chrome thickness, The optimal
value is 50 microns on the point, reject if the thickness is lower
than 30 microns,and higher than 100 microns.
check the rod roughness, the optimal value is Ra0.10 - 0.16 for the
rod surface, reject if you measure the roughness value more than
ra0.30
