Eaton Compressor & Fabrication C-STOV-MC001-E1 - Manual (Page 44)

44 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006
Steering Control
Units—Series 25
Product Description
The Series 25 SCU includes
two patented designs
(Balanced Architecture and
Wide Angle) that make it
even more responsive,
reliable and cost effective.
Features
• Open Center
• Closed Center
• Load Sensing
• Integral Valves
• Q-Amp
• Wide Angle
• Pilot Pressure Port
This is an added feature
that can be used for:
- Pilot pressure to
priority valve
- Diagnostics
• Cylinder Damping
Applications
Articulated Vehicles
• Loaders
• Scrapers
• Skidders
• AG Tractors
Rigid Frame Vehicles
• Large Front End
Loaders
• Graders
• Mining Trucks
• Articulated Dump
Haulers
• Transporters
Benefits
• Balanced architecture
provides passageways
that are equal in both
directions and pressure
areas that are staged
for minimum leakage.
This gives balance,
precise servo response
and uniform steering
action in both directions
while reducing drift.
• Progressive valving
makes it possible to
produce the
spool/sleeve valve in a
way that assures
reliability and reduces
costs.
• Eaton's high capacity
gerotor assembly
provides a lot of
capacity in a small
package.
• Heavier valve
components- housing,
spool and sleeve-
provides stability,
especially during
pressure and thermal
transient conditions.
• The seal and centering
spring designs provides
positive, low-effort
steering feel assuring
excellent vehicle
control, an important
feature on large
vehicles.
SPECIFICATIONS
Max. System Pressure 241 bar [3500 PSI]
Max. Back Pressure 21 bar [300 PSI]
Rated Flow 95 l/min [25 GPM]
Max. Flow 189 l/min [50 GPM]
Max. Differential
Between Steering Unit 28° C
and System Temperature 50° F
Max. System
Operating Temperature 93°C [200° F]
Input Torque
Powered 2,8-3,4 Nm @ 6,9 bar back pressure
[25-30 lb-in @ 100 PSI back pressure]
Non Powered †††
Fluid ATF Type A and most petroleum based fluids
Recommended Filtration ISO 18/13 cleanliness level
††† Manual steering is not possible without hydraulic power.