Ramsey Winch 800/H-800 DOW-LOK - Manual (Page 5)

5
HYDRAULIC SYSTEMS
Refer to the performance charts, below, to properly match your hydraulic system to the H-800 Series winch perform-
ance. The charts consist of:
1. Line speed, first layer (FPM) vs. Flow, (GPM) and
2. Line pull (lbs.) 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.
Performance based on a motor displacement of 14.9 cubic inches with 30 GPM maximum flowrate. See page 15 for
motor port size.
H-800, HY-800 Series Performance: 20,000 lb. Duty Rating 40:1 Gear Ratio
LINE PULL, LBS., FIRST LAYER
WORKING PRESSURE, PSI
0
6,000
3000 1000 2000
LINE SPEED, FPM, FIRST LAYER
FLOW, GPM
5
0
0
10 20 30
16,000
8,000
18,000
10,000
20,000
12,000
14,000
STATIC DYNAMIC
10
15
20
TYPICAL HYDRAULIC LAYOUT
LOW PRESSURE LINES
CONTROL VALVE
RESERVOIR
FLUID
FLUID FILTER
RELIEF VALVE
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