Stanley Black & Decker HP TWIN8 manual Htma / Ehtma Requirements

HTMA / EHTMA REQUIREMENTS

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
	(103 bar)	(103 bar)	(103 bar)	(103 bar)
(at the power supply outlet)
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.

Filter

Min. full-flow filtration Sized for flow of at least:

(For cold temp. startup and max. dirt-holding capacity)

25 microns	25 microns	25 microns	25 microns
30 gpm	30 gpm	30 gpm	30 gpm
(114 lpm)	(114 lpm)	(114 lpm)	(114 lpm)

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		CLASSIFICATION
HYDRAULIC SYSTEM
REQUIREMENTS	B	C	D
Flow Range	3.5-4.3 gpm	4.7-5.8 gpm	7.1-8.7 gpm	9.5-11.6 gpm	11.8-14.5 gpm
	(13.5-16.5 lpm)	(18-22 lpm)	(27-33 lpm)	(36-44 lpm)	(45-55 lpm)
Nominal Operating Pressure	1870 psi	1500 psi	1500 psi	1500 psi	1500 psi
(at the power supply outlet)	(129 bar)	(103 bar)	(103 bar)	(103 bar)	(103 bar)
System relief valve setting	2495 psi	2000 psi	2000 psi	2000 psi	2000 psi
(at the power supply outlet)	(172 bar)	(138 bar)	(138 bar)	(138 bar)	(138 bar)

NOTE: These are general hydraulic system requirements. See tool specification page for tool specific requirements

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