Typical layout, Hydraulic system requirements – Ramsey Winch Powermaster Series 20K Bumper and Winch User Manual
Page 5
3 OM-914206-1208-B
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 the Powermaster 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