Ramsey Winch 20K POWERMASTER - Manual (Page 5)

3 OM-914209-0508-A
CONTROL VALVE
3 POSITION
4 WAY VALVE
(MOTOR SPOOL)
HIGH PRESSURE LINE
DUAL-A & B PORT CONTROL
WITH BRAKE RELEASE SHUTTLE
BRAKE
PORT
B
MOTOR
A
TYPICAL LAYOUT
LOW PRESSURE LINE
PUMP
HYDRAULIC SYSTEM REQUIREMENTS
Refer to the performance charts, below, to properly match your hydraulic system to Linemaster 20K winch
performance. The charts consist of:
(1) Line pull (lb.) first layer vs. working pressure (PSI) and (2) Line speed, first layer (FPM) vs. gallons per
minute (GPM). Performance based on a motor displacement of 14.9 cubic inches with 30 GPM maximum
flow rate. Motor has (2) 1.062-12 SAE straight thread o-ring ports.
Note:
A motor spool (open center) directional control valve is required for brake operation.
PERFORMANCE CHARTS
BASED ON 14.9 CU IN/REV MOTOR
0
5000
10000
15000
20000
0 500 1000 1500 2000 2500
WORKING PRESSURE, PSI
LI
N
E
P
U
LL,
LBS
FIR
ST
LA
Y
ER
0
5
10
15
20
25
30
35
40
45
0 5 10 15 20 25 30
FLOW, GPM
LI
N
E
SP
EE
D
, FT
/M
IN
FIR
ST
LA
Y
ER