PRODUCT OVERVIEWFlexibility of design ........................................................................................................................................3
Return line filtration ................................................................................................................................. 5
CDS 60 AND 100Specifications ...................................................................................................................................................6
Spool valve order form ...............................................................................................................................28
CDS60 and CDS100 specification worksheet .....................................................................................28
CDS60 and CDS100 price worksheet ....................................................................................................28
520L0564 | BC00000105en-US0101
Directional Control Valves Technical Information:
Product overview
FLEXIBILITY OF DESIGNThe Danfoss directional control valves are designed to give customer flexibility over a broad
range of flow and pressure capabilities. Actuator options include a range of levers, cable
actuators, hydraulic and pneumatic pilot controls, two-axis joysticks, and electrohydraulic
solenoids. Flow rates range from 0 to 100 l/min [26 US gal/min].
FLUIDSHydraulic fluid performs three basic functions in a hydraulic system: It transfers energy,
lubricates moving components, and transports heat and contaminants out of the system.
Base stock and additives
Danfoss valves are designed to operate with mineral-based fluids containing oxidation, rust,
and foam inhibitors, compatible with fluoroelastomer seals. Consult your fluid supplier for
information on seal compatibility.
Viscosity
Viscosity is the most important property of a hydraulic fluid. It is a measurement of how the
fluid resists flow. Low viscosity fluids increase internal leakage; high viscosity fluids increase
pressure drop through the valve. Use a fluid that meets the viscosity limits published in this
catalog. For specific requirements, see technical data in each section.
Temperature
Temperature affects a fluid’s viscosity. Higher temperature fluid has lower viscosity.
Operating at excessive temperatures may have other detrimental effects on your hydraulic
fluid. Design your hydraulic system to operate within the specified temperature range.
Specific requirements are published in each section.
For more information
For more information on hydraulic fluid selection refer to Hydraulic Fluids and Lubricants
Effective filtration is critical to a hydraulic system’s performance and working life. Employ
system filtration capable of meeting the published requirements in each valve section. Be
aware that other components in the system may have more stringent requirements. Design
your filtration system to satisfy the requirements of the most sensitive component.
Return line filtration
Return line filtration is generally adequate for Danfoss valves. We recommend a 10 micron
nominal (20 micron absolute) or finer filter. Insure the filter in your system is properly sized
and maintained. To facilitate proper filter maintenance, use a pressure gauge or other
indicator to signal when it is necessary to change the filter. Never allow filter to reach its
bypass condition. Follow the filter manufacturer’s maintenance recommendations.
Cleanliness
Hydraulic system contamination must not exceed the limits published for each valve. Limits
are specified per ISO 4406 (1999). When measuring system contamination, calibrate test
equipment in accordance with the ACFTD method.
For more information
For more information on system filtration, refer to Design Guidelines for hydraulic fluid cleanliness, Danfoss publication 520L0467.
Maximum flow (CDS 100)100 l/min [26.4 US gal/min]
Maximum flow (CDS 60)60 l/min [15.8 US gal/min]
Work pressure210 bar [3050 psi]
Maximum pressure250 bar [3625 psi]
Maximum pressure (outlet section)40 bar [580 psi]
Temperature range-40º to 80º C [-40 to 176º F]
Recommended fluid typeMineral based hydraulic oil
Recommended viscosity26-55 mm²/sec (cSt) [123-255 SUS]
Minimum fluid cleanliness (per ISO 4406)19/16
520L0564 | BC00000105en-US0101
12 sections
11 sections
10 sections
Pressure - bar [psi]
Flow - l/min [US gal/min]
100
250
Pressure - bar [psi]
[26]
Flow - l/min [US gal/min]
12 sections
11 sections
10 sections
Pressure - bar [psi]
Directional Control Valves Technical Information:
CDS 60 and 100
TYPICAL PERFORMANCE
Based on oil temperature
of 45°–50°C [113°–122° F].
Viscosity 32 mm²/sec
(cSt) [151 SUS]. CDS
spool leakage (standard)
at 70 bar [1015 psi],
50°C [122°F], ISO VG46:
10 cm³/min [0.61 in³/min]
16
[232]
14
[203]
12
[174]
10
[145]
[116]
[87]
8
6
Pressure vs. flow curves for main relief valve
[3625]
200
[2900]
150
[2176]
100
[1450]
50
[725]
0
0102030405060708090
[2.6] [5.3][7.9] [10][13][16][19][21][24]
Pressure drop (P-T) CDS 100Pressure drop (P-T) CDS 60
ATop port
BSide port, top port plugged
CTop port, with side gauge port (9/16-18UNF)
DTop inlet and outlet ports (use H, I, J on outlet)
Main relief valves
CodeDescription
ANo valve, with plastic plug
BNo valve, with special plug
CValve, with direct valve and external adjustment
DValve, with direct valve and internal adjustment
E*Valve, pilot operated and external adjustment
ATop outlet
BSide outlet, top plugged
CSide outlet for power beyond (top to tank)
DTop outlet (with closed bypass)
ETop outlet (for electrical control)
FTop outlet (for electrical control, with power beyond)
GSide outlet (for electrical control, top plugged)
H*Top plugged
I*Top plugged, use with power beyond
J*Top plugged for electrical control
L*Top plugged for electrical control, use with power beyond
A100CDS 100 body for supporting valves
B100CDS 100 normal body (no valves)
A60CDS 60 body for supporting valves
B60CDS 60 normal body (no valves)
Circuit types, page 15
1
2*
3*
Spool types, page 16
A4-way, closed center
B4-way, open center
C4-way, closed center, port A plugged
D4-way, closed center, port B plugged
E3-way, closed center, port A plugged
F3-way, closed center, port B plugged
G4-way, open center, port A plugged
H4-way, open center, port B plugged
IFloat-spool in (use centering option J )
JFloat-spool out (use centering option J)
Spool actuation, pages 17–18
ANo extension
BFemale spool end + Clevis
CMale spool end + Tang
DWith support (no lever)
EWith lever
FPneumatic (use centering option A)
GCable with lever
HCable with joystick (use A for the adjacent body)
I/MWith mechanical joystick (use A for the adjacent body)
JElectrical
RFemale spool end
SMale spool end
TFemale Spool end with adjust
ASpring centered
B3 position detent
CSpring centered, detent in A
DSpring centered, detent in B
ESpring centered, detent in A and B
FSpring centered, hydraulic kickout
HSpring centered, female extension
ISpring centered, male extension
JSpring centered, detent in float: use for floatation spool
LSpring centered, use for electrical command
N2-position detent, spool in
O2-position detent, spool out
P*With switch, activates spool in
Q*With switch, activates spool in and out
R*With switch, activates two motors
* on request
Port types
Code1234578X
SAE - ORBBSP - ParallelMetric - ISO 6149
Threads
Model
CDS100
Model
CDS60
Section
Section
Auxiliary valves, page 22-23
APlug
BDirect relief with external adjustment (except electrical actuation)
CDirect relief with internal adjustment
DPilot check valve
E*Flow control valve (Except electrical actuation)
FAnti-cavitation
G
IDirect relief with anti-cavitation and internal adjustment (electrical only)
JPlug, for 3-way spools
KPlug, for valves D and E
For valves B, C, G, and I, specify pressure and flow
Example: B(140/40) Pressure 140 bar flow 40 l/min
* On request
Direct relief with anti-cavitation and external adjustment
(except electrical actuation)
CABLING AND ELECTRICAL
OPTIONS FOR ACTUATOR
TYPES G, H, AND J
Work section order code (example)
1 A E 2 A 1 A B140/40*A100A100
G: Flexible cable and lock options for spool control lever
ABC
Lever lock optionsWithout lockLock in A and/or BLock in central position
Standard cables100 - 125 - 150 - 175 - 200- 250 - 275- 300 - 325 - 350 - 400 - 450 - 500 cm (other: consult)
Example: how to order
A60 - 1AG2A1 - AB - A100 - 140/40 (lever without lock, 100 cm cable)
H: Flexible cable and handle options controls for joystick
Danfoss Mobile Power and Control Systems
– Market Leaders Worldwide
Danfoss is a comprehensive supplier providing complete systems
to the global mobile market.
Hydraulic power steering
Electric power steering
Electrohydraulic power steering
Closed and open circuit axial piston
pumps and motors
Gear pumps and motors
Bent axis motors
Orbital motors
Transit mixer drives
Planetary compact gears
Proportional valves
Directional spool valves
Cartridge valves
Hydraulic integrated circuits
Hydrostatic transaxles
Integrated systems
Fan drive systems
Danfoss serves markets such as agriculture, construction, road
building, material handling, municipal, forestry, turf care, and many
others.
We offer our customers optimum solutions for their needs and
develop new products and systems in close cooperation and
partner ship with them.
Danfoss specializes in integrating a full range of system
components to provide vehicle designers with the most advanced
total system design.
Danfoss provides comprehensive worldwide service for its
products through an extensive network of Global Service Partners
strategically located in all parts of the world.
Local address:
Electrohydraulics
Microcontrollers and software
Electric motors and inverters
Joysticks and control handles
Displays
Sensors
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.
This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
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