|Place of Origin:||CHINA|
|Brand Name:||DALLAST APT|
|Minimum Order Quantity:||10|
|Packaging Details:||wood box|
|Delivery Time:||15-25 days|
|Material:||45# 42CrMo4 40CrMo||Neutral Salt Spray Test:||NSS 300;500 Hours|
|Type:||Hollow/Solid Rod||Surface Hardness:||＞HV850|
|NSS Testing Standing:||Une-en Iso9227:2017||SURFACE ROUGHNESS:||Ra≤0.2 Micron And Rt≤2 Micro|
|Application Environment:||At Sea Or In Harsh Environments||Color:||Black|
42CrMo4 Hollow Piston Rod Hard Chrome Plated Steel Bar For Doubel Acting Hydraulic Cylinder NSS 500 hours
· Sal solution: 50 (+/- 5) g/l of NaCl. Water is demineralized and salt purity is 99.5%.
· Environmental temperature: 35 °C.
· pH of salt solution is 6.8.
· Volumen of salt solution is 38.4 ml/day.
· Density of salt solution is 1,030 g/cm3.
· Spraying is 1.5 (+/- 0.5) ml/h.
NSS (Neutral Salt Spray test): More than 200 hours;
More than 360 hours;
More than 500 hours;
More than 100 hours;
TUV NSS Testing Report SGS NSS Testing Report
Material :45# 42CrMo
NSS:Endure 500 hours
Application Environment:At sea or in harsh environments Surface hardness:＞HV860
SURFACE ROUGHNESS:Ra≤0.2 micron and Rt≤2 micro
TOLERANCES ON DIA:ISO f10 on the diameter
LENGTH:MAX 5 meter
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.
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)