Owner manual

DH
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30
AIR COOLED DH
Dimensions & Weights
DH-513 thru DH-670
DHR Series
VALVE
BYPASS
RELIEF
2.50
4 PLACES
.53 DIA
H
C
2.56
F
A
D
E
B
G
4 PLACES
.53 DIA
3.00
H
C
2.56
F
A
D
E
B
G
CORE
STRAP
MOUNTING
.12
2 PLACES
F
B
D
1.50
EACH STRAP
6 HOLES
.34 DIA
SHOCK
MOUNTING
KIT
"G" DIA
E
C
A
DH Series
VALVE
BYPASS
RELIEF
2.50
4 PLACES
.53 DIA
H
C
2.56
F
A
D
E
B
G
4 PLACES
.53 DIA
3.00
H
C
2.56
F
A
D
E
B
G
CORE
STRAP
MOUNTING
.12
2 PLACES
F
B
D
1.50
EACH STRAP
6 HOLES
.34 DIA
SHOCK
MOUNTING
KIT
"G" DIA
E
C
A
All dimensions in inches. Weights are for aluminum fins.
After making your base model selection with the connection of your choice, please refer to the How to Order section.
TYPICAL OIL VISCOSITY, SSU
Oil Temp °F
SAE SAE SAE SAE SAE
5 10 20 30 40
100 110 150 275 500 750
150 60 70 100 135 190
210 40 43 50 65 75
C D H
FACE AREA WEIGHT
MODEL A B DH DHR DH DHR E F G NPT SAE SQ FT LBS
DH-513 12.00 13.75 15.00 16.25 20.75 22.41 18.25 8.00 22.25
0.75 #12
1.15 16
DH-524 18.00 19.75 21.00 23.25 26.75 28.13 24.25 14.00 28.25 2.47 27
DH-535 24.00 19.25 27.00 29.25 26.75 27.63 23.75 20.00 27.75 1.00 #16 3.21 53
DH-626 36.00 22.75 39.03 41.20 29.75 31.13 27.25 32.00 31.25
2.00 #32
5.69 60
DH-670 40.00 34.75 43.03 45.28 41.75 43.13 39.25 36.00 43.25 9.65 115
Desired Reservoir Temperature
Return Line Cooling: Desired temperature is the oil temperature leaving the
cooler. This will be the same temperature that will be found in the reservoir.
Off-Line Recirculation Cooling Loop: Desired temperature is the oil
temperature entering the cooler. In this case, the oil temperature change
must be determined so that the actual oil leaving temperature can be found.
Calculate the oil temperature change (oil
T) with this formula:
Oil
T = (BTU’s/Hr.) / (GPM Oil Flow x 210).
To calculate the oil leaving temperature from the cooler, use this formula:
Oil Leaving Temp. = Oil Entering Temp – Oil
T.
This formula may also be used in any application where the only temperature
available is the entering oil temperature.
Oil Pressure Drop: Most systems can tolerate a pressure drop through the
heat exchanger of 20 to 30 PSI. Excessive pressure drop should be avoided.
Care should be taken to limit pressure drop to 5 PSI or less for case drain
applications where high back pressure may damage the pump shaft seals.
Oil Temperature
Typical operating temperature ranges are:
Hydraulic Motor Oil 110° - 130°F
Hydrostatic Drive Oil 130° - 180°F
Bearing Lube Oil 120° - 160°F
Lube Oil Circuits 110° - 130°F