Ramsey Winch H-800 DOW-LOK - Manual (Page 6)

HYDRAULIC SYSTEM REQUIREMENTS
Refer to the performance charts, below, to properly match your hydraulic system to
H-800 Dow-Lok® winch performance. The charts consist of :
(1) Line pull (lb.) first layer vs. working pressure (PSI). STATIC (solid line) refers to
hoisting a suspended load from rest; DYNAMIC (dotted line) refers to maintaining
the motion of a moving load.
(2) Line speed, first layer (FPM) vs. Flow, gallons per minute (GPM).
Performance based on a motor displacement of 14.9 cubic inches with 30 GPM
maximum flow rate. See page 15 for motor port size.
H-800, HY-800 SERIES PERFORMANCE
20,000 LB. DUTY RATING
40:1 GEAR RATIO
TYPICAL HYDRAULIC LAYOUT
WORKING PRESSURE, PSI
LI
N
E
P
U
LL
,L
B
S
FI
R
S
T
LA
Y
E
R
8,000
6,000
0
10,000
12,000
14,000
16,000
18,000
20,000
2000 1000 3000
FLOW, GPM
10
LI
N
E
S
P
E
E
D
,F
P
M
FI
R
S
T
LA
Y
E
R
0
0
10
5
15
20
20 30
D
YN
A
M
IC
S
TA
TI
C
4