42CrMo4 Hollow Piston Rod Hard Chrome Plated Steel Bar For Doubel Acting Hydraulic Cylinder NSS 500 hours

NSS (Neutral Salt Spray test): More than 200 hours;
More than 360 hours;
More than 500 hours;
More than 100 hours;
Application Environment:At sea or in harsh environments Surface hardness:＞HV870

SURFACE ROUGHNESS:Ra≤0.2 micron and Rt≤2 micro

TOLERANCES ON DIA:ISO f10 on the diameter

LENGTH:MAX 5 meter

NSS Testing Standing une-en iso9227:2017(Neutral Salt Spray test)

TUV NSS Testing Report SGS NSS Testing Report


Crafts Process Hardening Force Remove

In the whole crafts process, there are 2 times remove hardening forces: the first remove hardening force in the heat treatment process, hardening force remove is about 80%; the second remove hardening force in the surface treatment process, hardening force remove is about 90%-95%. Therefore, the piston rod is not easily deformed during use or transportation.

FAQ:
1. How do I measure a cylinder?
Measure the pin to pin length when the cylinder is fully extended and fully retracted, measure the diameter of the rod, the bore of the cylinder will typically measure 1/4" - 1/2" less than the outer diameter of the barrel, also determine the type and size of the ports. Finally, determine the type and size of the end mounts.

2. How does a displacement cylinder work?
In a displacement (single acting) cylinder the rod is extended by flowing pressurized oil behind the rod,
which forces the rod out of the barrel like a piston. Once the pressure is released, the load on the
cylinder retracts the rod. The diameter of the rod is the effective piston area.

3. How much force does my cylinder have?
Force is determined by multiplying the area of the piston by the pressure (PSI).(r2 x p x PSI)

Company profile

Shenzhen Dallast Technology Co ., Ltd. it is hydraulic cylinder manufacturing enterprise integrated with professional designing, production and sales . Company focused, specialized in various types of hydraulic cylinder.Is widely used in dump trucks , dump trailers, garbage trucks, excavators, loaders , forklifts, cranes and other projects , ships, mining machinery and fire engines , sanitation vehicles and other special vehicles, agricultural machinery , heavy machinery and many other fields .