Hydraulic systems, Provided by user, Typical layout – Ramsey Winch HD-P 42 User Manual
Page 8: Motor spool (open center) control valve
6
Refer to the performance charts below to properly match your hydraulic system to the winch
performance. The charts consist of: (1) Line Pull first layer kN (lb) vs. Working Pressure bar (PSI).
(2) Line Speed, first layer MPM (FPM) vs. flow LPM (GPM).
HYDRAULIC SYSTEM REQUIREMENTS
1.
Motor spool (open center) control valve
2. Emergency Stop:
A. If winch is controlled by a direct-operated manual valve, that valve serves as the E-stop.
B. If a remote operated control valve is used, a solenoid-operated hydraulic dump
valve, normally open to tank, and an emergency stop switch (to open the dump valve) is re-
quired. The E-stop switch is to be normally closed and have a red, resettable push button
actuator with a yellow background. The E-stop switch must be easily accessible to the
operator.
3. Relief valve set to 137,9 bar (2000 psi) which is the rated capacity limiter.
4.
Flow rate of 56,7 LPM (15 GPM) maximum. Do not exceed 75,7 LPM (20 GPM) or motor and winch
may be damaged.
5.
Hydraulic fluid with a viscosity between 20-43 cSt (100-200 SUS). Maximum
operating temperature 85C (180F). Cleanliness level of ISO 17-14 or better.
DIRECT-OPERATED MANUAL VALVE.
IN HYDRAULIC SYSTEMS REQUIREMENTS. NOT REQUIRED FOR A
*
REQUIRED ONLY IF REMOTE-OPERATED CONTROL VALVE IS USED. SEE 2B
E-STOP SWITCH
*
*
DUMP VALVE
PROVIDED BY USER
B
DUAL-A & B PORT CONTROL
WITH BRAKE RELEASE SHUTTLE
MOTOR
BRAKE
PORT
A
SYSTEM RELIEF
137,9 BAR (2000 PSI)
3 POSITION
4 WAY VALVE
(MOTOR SPOOL)
MAX. FLOW &
PRESSURE AT
RATED LOAD:
HIGH PRESSURE LINE
LOW PRESSURE LINE
PUMP
TYPICAL LAYOUT
12,7 mm (.50 in)
I.D. MINIMUM
19 mm (.75 in) I.D. MINIMUM
56,7 LPM (15 GPM)
137,9 bar (2000 PSI)
(RATED CAPACITY LIMITER)
WORKING PRESSURE bar (PSI) AT 56,7 LPM (15 GPM)
FLOW LPM (GPM)
LINE PULL-FIRST
LA
YER kN (lb)
LINE SPEED-FIRST
LA
YER MPM (FPM)
0
18,9
37,9
56,7
0 (0)
1,5 (5)
3,1 (10)
4,6 (15)
0
0
4,4 (1000)
8,9 (2000)
13,3 (3000)
17,8 (4000)
22,2 (5000)
26,7 (6000)
31,1 (7000)
34,9 (8000)
68,9
137,9
172,4
BASED ON 408cc (24.9 cu in) MOTOR
103,4
34,5
PERFORMANCE CHARTS
(0)
(5)
(10)
(15)
(0)
(1000)
(2000) (2500)
(1500)
(500)
40,0 (9000)
42,0 (9480)
6,1 (20)
7,6 (25)
9,1 (30)
10,7 (35)
HYDRAULIC SYSTEMS