Ramsey Winch 800/H-800 DOW-LOK - Manual (Page 10)

8
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 18 for mo-
tor port size.
H-800, HY-800 Series Performance
20,000 lb. Duty Rating 40:1 Gear Ratio
TYPICAL HYDRAULIC LAYOUT
LI
NE PUL
L,
LB
S.
, FI
RS
T LAY
E
R
WORKING PRESSURE, PSI
0
6,000
3000 1000 2000
L
IN
E
SPE
ED,
FPM,
FI
RST L
AYER
FLOW, GPM
5
0
0
10 20 30
16,000
8,000
18,000
10,000
20,000
12,000
14,000
S
T
A
T
IC
D
Y
N
A
M
IC
10
15
20
PUMP INLET LINE
3 POSITION 4 WAY
PUMP
CYLINDER SPOOL
(1.31 I.D. MINIMUM)
LOW PRESSURE LINES
HIGH PRESSURE LINES
(.88 I.D. MINIMUM)
WINCH MOTOR
HYDRAULIC
LOW PRESSURE LINES
CONTROL VALVE
RESERVOIR
FLUID
FLUID FILTER
RELIEF VALVE