SKV20 User Manual ◄ 8
HTMA /
EHTMA REQUIREMENTS
HTMA
TOOL TYPE
HYDRAULIC SYSTEM REQUIREMENTS
TYPE I TYPE II
TYPE RR
TYPE III
Flow Range
4-6 gpm 7-9 gpm 9-10.5 gpm 11-13 gpm
(15-23 lpm) (26-34 lpm) (34-40 lpm) (42-49 lpm)
Nominal Operating Pressure
1500 psi 1500 psi 1500 psi 1500 psi
(at the power supply outlet)
(103 bar) (103 bar) (103 bar) (103 bar)
System relief valve setting
2100-2250 psi 2100-2250 psi 2200-2300 psi 2100-2250 psi
(at the power supply outlet)
(145-155 bar) (145-155 bar) (152-159 bar) (145-155 bar)
Maximum back pressure 250 psi 250 psi 250 psi 250 psi
(at tool end of the return hose) (17 bar) (17 bar) (17 bar) (17 bar)
Measured at a max. fluid viscosity of: 400 ssu* 400 ssu* 400 ssu* 400 ssu*
(at min. operating temperature) (82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
Temperature: Sufficient heat rejection 140° F 140° F 140° F 140° F
capacity to limit max. fluid temperature to: (60° C) (60° C) (60° C) (60° C)
(at max. expected ambient temperature)
Min. cooling capacity at a temperature 3 hp 5 hp 6 hp 7 hp
difference of between ambient and fluid (2.24 kW) (3.73 kW) (5.22 kW) (4.47 kW)
temps 40° F 40° F 40° F 40° F
NOTE: (22° C) (22° C) (22° C) (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.
25 microns 25 microns 25 microns 25 microns
Min. full-flow filtration
30 gpm 30 gpm 30 gpm 30 gpm
Sized for flow of at least:
(114 lpm) (114 lpm) (114 lpm) (114 lpm)
(For cold temp. startup and max.
dirt-holding capacity)
Hydraulic fluid Petroleum based
100-400 ssu* 100-400 ssu* 100-400 ssu* 100-400 ssu*
(premium grade, anti-wear, non-conductive)
(20-82 centistokes)
Viscosity (at min. and max. operating temps)
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.
*SSU = Saybolt Seconds Universal
EHTMA
HYDRAULIC SYSTEM
REQUIREMENTS
CLASSIFICATION
B
C
D
Flow Range
Nominal Operating Pressure
3.5-4.3 gpm
(13.5-16.5
1870 psi
-5.8 gpm
-22 lpm)
7.1-8.7 gpm
(27-33 lpm)
1500 psi
-11.6 gpm
-44 lpm)
11.8-14.5 gpm
(45-55 lpm)
(at the power supply outlet)
System relief valve setting
(at the power supply outlet)
NOTE: These are general hydraulic system requirements. See tool specification page for tool specific requirements
HTMA / EHTMA REQUIREMENTS