Hydraulic oil, as transmission medium in hydraulic transmission system, makes mechanism and parts in hydraulic
system lubricated, cooled and rust-proof. The pressure, temperature and flow speed of hydraulic transmission
system changes a lot in large ranges, so the different quali�es of hydraulic oil have direct effect upon working
performance of hydraulic system. The proper usage of hydraulic oil requires:
8.5.1
Cleanness of hydraulic oil NSA 9 to 10;
8.5.2
Regular inspec�on of hydraulic oil;
8.5.3
Well protec�on from contamina�on, which can cause premature rod seal failure. Abrasive par�cles
suspended in the fluid can damage the seal and the piston rod surface, while airborne contamina�on can be drawn
into a cylinder via a faulty wiper seal. Water is a common contaminant, affec�ng the lubricity of oil and causing
some of the most widely used seal materials to ‘age harden’ at temperatures above 65°C. Air is also an oil
contaminant, aerated oil can cause physical damage to piston rod seals. The presence of air in the oil can also
intensify the transmission of vibra�on which, in turn, can lead to other forms of system failure.
8.6
Maintenance and servicing of chains
8.6.1
Inspec�on of chains
8.6.1.1 Check regularly the tension of chains. Fasten it if needed.
8.6.1.2 Check abrasion loss of chains. Replace the en�re chain if tensile length is 2% more than standard length
8.6.2
Maintenance of chains
8.6.2.1 Keep good coplanarity of all transmission chain wheels, unobstructed path and proper sag of chains
8.6.2.2 Keep well lubrica�on with suitable lubrica�on oil or grease. Lubrica�on oil or grease with high viscosity
is not recommended, it will be adhered with dirt which can block inters�ce to fric�on parts.
8.6.2.3 Chains to be cleaned regularly, and checked for lubrica�on.
8.6.2.4 To replace broken chain element in �me is good for long life�me.
8.6.3
Lubrica�on of chains
8.6.3.1 Frequency of lubrica�on
8.5
Inspection of hydraulic oil
Windless and clean working environment:
Environment temperature
-10
～
0
℃
0
～
40
℃
40
～
50
℃
50
～
60
℃
Oil brand
Machine oil 20#
Machine oil 30#
Machine oil 40#
Machine oil 50#
Frequency
Once per week
Environment temperature
-10
～
0
℃
0
～
40
℃
40
～
50
℃
50
～
60
℃
Oil brand
SR4020
SR4020
TX8R
TX8R
Frequency
Once per two months
Windy and dusty working environment:
Note:
In working environment with high humidity or acid-base medium, well rust-proof treatment and higher
frequency of lubrica�on is necessary, once per month is recommended.
54
Surface Cleaning & Maintenance
Summary of Contents for Starke 2121
Page 1: ...User Manual for Pit Lift ...
