8
Fluid Requirements
To obtain the proper torque during make/break operations, the tubing tong requires a flowrate of
approximately 35 to 40 gallons per minute (132.5 LPM to 151.4 LPM) at 2000 PSI. Every effort should be made to
keep the hydraulic system clean. Whenever the hoses are disconnected, make sure the quick-coupling ends are
capped/plugged to prevent any debris from entering the hydraulic system.
NOTE: Hydraulic power units must provide sufficient hydraulic fluid cooling to prevent the tubing tong from
overheating. The maximum allowed temperature of the hydraulic oil flowing through the tubing tong pressure
inlet line is 158
o
F (70
o
C).
Hydraulic Oil Specification
The quality of hydraulic oil used to power the tong affects its performance and service life. The following are key
items to consider when choosing a hydraulic fluid for the power unit:
• The hydraulic oil must contain additives to ensure high anti-wear characteristics. Not all hydraulic
oils contain these in sufficient amounts.
• The hydraulic oil must have the proper viscosity in order to provide adequate lubrication. The oil
must also have a temperature rating that is adequate for this application.
• The hydraulic oil must have good anti-rust and oxidation properties.
Acceptable hydraulic oils for running the tubing tong are as follows:
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