Moog D633-A Series, User Manual

Page: 34 / 88

4 Technical Data Hydraulic data
© Moog GmbH User Manual "D633-A Series" (CA80942-001; Version 1.0, 12/08) 26
4.2 Hydraulic data
4.3 Static and dynamic data
Valve construction type Spool valve, one-stage, with bushing
Actuation Directly with permanent magnet linear force motor
Control oil supply None
Nominal size and
mounting pattern NG6, mounting pattern as per ISO 4401-03-03-0-05 , with or without leakage port Y
Ö Chapter "3.3.3 Leakage port Y", page 17
Ö Chapter "7.2.2 Mounting pattern of mounting surface", page 37
Diameter of ports 7.9 mm (0.31 in)
Ö Chapter "7.2.2 Mounting pattern of mounting surface", page 37
Sealing material HNBR, FKM, EPDM, others on request
Ö Chapter "3.5.2.8 Sealing material identification", page 22
Valve configurations 2-way, 3-way, 4-way and 2x2-way operation
Ö Chapter "3.3.2 Valve configurations and hydraulic symbols", page 16
Overlap Zero lap, less than ±3 % or ±10 % positive overlap (model-dependent)
Ö Chapter "3.5.2.4 Bushing-spool identification", page 21
Max. flow Q
max
75 l/min (20 gpm)
Ö Chapter "5.1 Dependency of Flow and Pressure Drop", page 29
Rated flow Q
N
5/10/20/40 l/min (1.3/2.6/5.3/10.5 gpm) (model-dependent)
(at
∆
p
N
= 35 bar (508 psi) per control land: tolerance ±10 %)
Ö Chapter "3.5.2.2 Rated flow identification", page 20
Max. leakage flow Q
L
1
0.15/0.3/0.6/1.2 l/min (0.04/0.08/0.16/0.32 gpm) (model-dependent)
Maximum operating pressure Ports P, A and B 350 bar (5,075 psi)
Ö Chapter "3.5.2.3 Maximum pressure identification", page 20
Port T without Y 50 bar (725 psi)
Ö Chapter "3.3.3 Leakage port Y", page 17
Port T with Y 350 bar (5,075 psi)
Port Y Depressurized to tank
Hydraulic fluid Permissible fluids Mineral-oil-based hydraulic oil as per DIN 51524-1 to DIN 51524-3
Other fluids on request
Permissible temperature –20 to 80 °C (–4 to 176 °F)
Viscosity
ν
Recommended 15 to 100 mm²/s
Permissible 5 to 400 mm²/s
Cleanliness level,
recommended
(ISO 4406)
For functional safety < 18/15/12
For life cycle (wear and tear) < 17/14/11
The cleanliness of the hydraulic fluid greatly influences the functional safety (safe positioning
of the spool, high resolution) and the wear (control lands, pressure gain, leakage losses) of
the valves. To avoid malfunctions and increased wear, we recommend that the hydraulic fluid
be filtered accordingly.
Table 16: Hydraulic data
1
Typical values (measured at operating pressure p
P
= 140 bar (2,030 psi), viscosity of hydraulic fluid
ν
= 32 mm
2
/s and temperature of
hydraulic fluid T = 40 °C (104 °F))
Step response time for
0 to 100 % spool stroke
1
18 ms
Ö Chapter "5.5 Step response and frequency response", page 31
Hysteresis
1
Approx. 10 %
Table 17: Static and dynamic data
1
Typical values (measured at operating pressure p
P
= 140 bar (2,030 psi), viscosity of hydraulic fluid
ν
= 32 mm
2
/s and temperature of
hydraulic fluid T = 40 °C (104 °F))