* IMPORTANT: See pages
582-583
for additional notes on operating conditions.
Specifications may change without notice
C
H
E
C
K
342
D5A055
UP TO 140 L/MIN
37
USGPM
AND 420 BAR
6000
PSI
A regenerative circuit allows
a cylinder to be advanced
more rapidly than would
otherwise be possible using
pump flow alone.
BASIC MODEL
NUMBER
SYMBOL
NOMINAL FLOW AT
Dp = 7 bar
100 psi
PRESSURE
IDEAL
VISCOSITY *
SEAL MATERIAL /
TEMPERATURE *
FILTRATION *
WEIGHT
MINERAL OIL OR SYNTHETIC FLUID
WITH LUBRICANT PROPERTIES
25 MICRONS (Nom.) OR BETTER
FLUID *
15 - 50 cSt
80 - 230 SSU
LEAKAGE
NITRILE (Std.) -30°C to +100°C
BUNA-N -20°F
to
+210°F
VITON -20°C to +150°C
-4°F
to
+330°F
CRACKING
PRESSURE
PILOT RATIO
D5A055
420 bar
6000 psi
0.3 kg
0.66 lb
85 l/min
22 USgpm
Less than 3 drops/min
0.7 bar
10 psi
2 : 1
CAVITY
78-1
SPECIFICATIONS
TYPICAL PERFORMANCE
Measured at 30 cSt
140 SSU
(For cartridge only)
APPLICATION
Pressure Drop bar psi
20
290
15
218
10
145
5
73
0
0
Flow l/min USgpm
PRESSURE DROP vs FLOW
40
10.6
80
21.1
120
31.7
160
42.3
32Þ
2
3
1
CHECK VALVE
PILOT TO CLOSE, BALL TYPE
■ Hardened ball for maximum durability.
■ High flow capability.
■ Low leakage – less than 3 drops/min.
■ Good contamination tolerance.
■ Used in regenerative applications.
OPERATION
The spring-loaded ball is shifted by low pressure on port [3] allowing
free flow to port [2]. Pilot pressure on port [1] holds the ball closed,
blocking flow from ports [3] to [2] when the pilot pressure on port [1] is
half the pressure on port [3].
Reverse flow, [2] to [3], is blocked
12
3
12
3
LINE BODY LB10
CARTRIDGEDIMENSIONS
SEAL KIT
LINE BODY
MILLIMETRES
INCHES
SOLENOIDDIRECTIONAL
CHECK
SEQUENCE
PRESSURE
REGULATOR
FLOW
CONTROL
LINE
BODIES
CAVITIES
TECHNICAL
DATA
PROPORTIONALDIVERTERSHUTTLERELIEF
LOAD
CONTROL
343
SK30024N-1 (NITRILE
BUNA-N
)
SK30024V-1 (VITON)
CAVITY 78-1: M30 x 1.5 Thread
2
1
3
20.00
0.79
55.00
2.16
35 AF Hex
68 Nm
torque
50 lb ft
M30 x 1.5
3
1
2
2 holes
6.80 through∅
∅
0.268
Cavity
8.00
0.315
34.55
1.36
60.00
2.362
17.25
0.679
64.50
2.539
91.00
3.583
8.00
0.315
76.20
3.00
33.20
1.307
50.80
2.00
=
=
CAVITY TOOLING FOR 78-1 CAVITY
MM INCH
0.96PILOT DRILL Ø 24.50 REAMER (STEEL) 8RM31042S
STEP DRILL 8DS31342 COUNTERBORE 8CB31117
REAMER (ALUM) 8RM31042A TAP 8TP31217
MACHINING DETAILS PAGE 579
SEAL MATERIAL N NITRILE
BUNA-N
(Std.)
V VITON
D5A055
12
3
PORTING
LINE BODY
MATERIAL
LINE BODY DETAILS page and531 532
A
S
ALUMINIUM (Anodised)
TO 210 bar
STEEL (Zinc plated)
TO 420 bar
3000 psi
6000 psi
255
257
263
265
3/4 BSP (main) 1/4 BSP (aux)
3/4 SAE (main) 1/4 SAE (aux)
3/4 BSP Dual cavity
3/4 SAE Dual cavity
