HTMA Requirements
Type II
Type I
Type III
Tool
Category:
Hydraulic System
Requirements
Flow rate
Tool Operating Pressure
(at the power supply outlet)
System relief valve setting
Maximum back pressure
(at tool end of the return hose)
Measured at a max. fluid viscosity of:
(at min. operating temperature)
Temperature
Sufficient heat rejection capacity
to limit max. fluid temperature to:
(at max. expected ambient temperature)
Min. cooling capacity
at a temperature difference of
between ambient and fluid temps
NOTE:
Do not operate the tool at oil temperatures above 140
*SSU = Saybolt Seconds Universal
(at the power supply outlet)
NOTE:
When choosing hydraulic fluid, the expected oil temperature extremes that will be experienced in service determine the
most suitable temperature viscosity characteristics. Hydraulic fluids with a viscosity index over 140 will meet the requirements over
a wide range of operating temperatures.
NOTE: These are general hydraulic system requirements. See tool Specification page for
tool specific requirements.
° F (60° C). Operation at higher temperatures can cause operator
discomfort at the tool.
Filter
Min. full-flow filtration
sized for flow of at least:
(For cold temp. startup and max. dirt-holding capacity)
Hydraulic fluid
Petroleum based
(premium grade, anti-wear, non-conductive)
Viscosity
(at min. and max. operating temps)
4-6 GPM
(15-23 lpm)
2000 psi
(138 bar)
2100-2250
(145-155 bar)
250 psi
(17 bar)
400 SSU
(82 centistokes)
7-9 GPM
(26-34 lpm)
2000 psi
(138 bar)
2100-2250
(145-155 bar)
250 psi
(17 bar)
400 SSU
(82 centistokes)
11-13 GPM
(42-49 lpm)
2000 psi
(138 bar)
2100-2250
(145-155 bar)
250 psi
(17 bar)
400 SSU
(82 centistokes)
140
40
° F
(60° C)
3 hp
(2.24 kW)
° F
(22° C)
140
40
° F
(60° C)
5 hp
(3.73 kW)
° F
(22° C)
140
40
° F
(60° C)
7 hp
(5.22 kW)
° F
(22° C)
25 microns
30 GPM
(114 lpm)
100-400 SSU*
(20-82 centistokes)
25 microns
30 GPM
(114 lpm)
100-400 SSU*
(20-82 centistokes)
25 microns
30 GPM
(114 lpm)
100-400 SSU*
(20-82 centistokes)
C
20Lpm at 138bar
BHTMA CATEGORY
30Lpm at 138bar
BHTMA CATEGORY
7
