910198 – Tie Tamper
Phone: (262) 637-9681
11.2019 Rev 1.1
Page
10
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HTMA / EHTMA Requirements
HTMA Hydraulic System
Requirements
Type I
Type II
Type RR
Type III
Flow range
4-6 gpm
(15-23 lpm)
7-9 gpm
(26-34 lpm)
9-10.5 gpm
(34-40 lpm)
11-13 gpm
(42-49 lpm)
Nominal operating pressure
(At the power supply outlet.)
1500 psi
(103 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
System relief valve setting
(At the power supply outlet.)
2100-2250 psi
(145-155 bar)
2100-2250 psi
(145-155 bar)
2200-2300 psi
(152-159 bar)
2100-2250 psi
(145-155 bar)
Maximum back pressure
(At tool end of the return hose.)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
Measured at maximum fluid viscosity
(At tool end of the return hose at min. operating temperature.)
400 ssu*
(82 centistokes)
400 ssu*
(82 centistokes)
400 ssu*
(82 centistokes)
400 ssu*
(82 centistokes)
Temperature:
Sufficient heat rejection capacity to
limit max. fluid temperature to: (at
min. operating temperature).
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
Min. cooling capacity at a
temperature difference of between
ambient and fluid temps.
3 hp
(2.24 kW)
40° F
(22° C)
5 hp
(3.73 kW)
40° F
(22° C)
6 hp
(5.22 kW)
40° F
(22° C)
7 hp
(4.47 kW)
40° F
(22° C)
Do not operate the tool at oil temperatures above 140° F (60° C). Operation at higher temperatures can cause
operator discomfort at the tool.
Filter
25 microns
25 microns
25 microns
25 microns
Minimum full-low filtration
(For cold temp. startup and max.
dirt-holding capacity.)
30 gpm
(114 lpm)
30 gpm
(114 lpm)
30 gpm
(114 lpm)
30 gpm
(114 lpm)
Hydraulic fluid petroleum based
(Premium grade, anti-wear, non-
conductive) and Viscosity (at min.
and max. operating temps.)
100-400 ssu*
100-400 ssu*
100-400 ssu*
100-400 ssu*
Note
:
When choosing a hydraulic fluid, the expected oil temperature extremes that will be experienced in
service determines the most suitable temperature viscosity characteristics. Hydraulic fluids with a
viscosity over 140 will meet the requirements over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
