INT'L Shortcut Cartridge Catalogue - Bibus SK, s.r.o.
INT'L Shortcut Cartridge Catalogue - Bibus SK, s.r.o.
INT'L Shortcut Cartridge Catalogue - Bibus SK, s.r.o.
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Logic Elements<br />
BALANCED POPPET, NORMALLY OPEN, VENT-TO-OPERATE<br />
WITH INTEGRAL T-8A CONTROL CAVITY<br />
b<br />
4<br />
Drain<br />
3<br />
Pilot<br />
2<br />
Port<br />
T-8A Cavity<br />
1 Port<br />
Performance Curves<br />
DODR-8 DOFR-8 DOHR-8 DOJR-8<br />
P = bar<br />
Flow = L/min.<br />
20<br />
15<br />
10<br />
5<br />
0<br />
1.4<br />
1.2<br />
1<br />
.8<br />
.6<br />
.4<br />
.2<br />
c<br />
a<br />
Fully Open Pressure Differential vs. Flow with T-8A Pilot Stage Installed<br />
0 50 100 150 200 250 300 350 400 0 50 100 150 200 250 300 350 400<br />
0 50 100 150 200 250 300 350 400 0 50 100 150 200 250 300 350 400<br />
P = bar<br />
P = bar<br />
P = bar<br />
P = bar<br />
■ Maximum operating pressure = 350 bar.<br />
■ Maximum valve leakage at 24 cSt = 0,3 cc/min.<br />
■ Minimum pilot pressure required to shift valve = DODR-8, DOFR-8: 28 bar; DOHR-8, DOJR-8: 20 bar.<br />
■ Pilot passage into valve = DODR-8, DOFR-8: 0,8 mm; DOHR-8, DOJR-8: 1,19 mm.<br />
■ Pilot volume displacement = DODR-8: 0,16 cc; DOFR-8: 0,33 cc; DOHR-8: 0,82 cc; DOJR-8: 2,8 cc.<br />
■ Unique balanced construction provides predictable switching with 350 bar at port 1 and 2. Switching will only occur when both<br />
minimum pilot pressure at port 3 is present and pilot control valve is open.<br />
■ These valves are hydraulically balanced between port 1 and port 2.<br />
■ Port 1 and Port 2 are fully sealed from port 3 and port 4. Ports 3 and 4 are positively sealed.<br />
■ Valve will open when the pilot pressure falls below 10 bar.<br />
■ Leakage rate between port 1 and port 2 is less than 0,3 cc/min. at 350 bar.<br />
■ Any back pressure at the drain port is directly additive to the required pilot pressure.<br />
■ With the -8 control option, the main stage valve should first be installed to the correct torque value. The T-8A pilot control valve<br />
should then be installed into the main stage valve to its required torque value of 35-40 Nm.<br />
Nominal<br />
Capacity<br />
Locating<br />
Shoulder<br />
T-8A<br />
Cav<br />
4<br />
Nominal<br />
Capacity<br />
2<br />
1<br />
3<br />
Typical<br />
<strong>Cartridge</strong><br />
Model Code<br />
The -8 control option allows a pilot control valve to be incorporated<br />
directly into the end of the cartridge via the T-8A cavity. These pilot<br />
control cartridges are sold separately and include solenoid, air pilot,<br />
and hydraulic pilot operation. See Pilot Control <strong>Cartridge</strong>s on page 141.<br />
DO ✱ R – 8 H ✱<br />
<strong>Cartridge</strong> Dimensions<br />
Cavity a b c<br />
Control Minimum Pilot Pressure Seal Material<br />
D 60 L/min. 8 with T-8A cavity DODR-8, DOFR-8 only: N Buna-N<br />
in hex body for H 28 bar<br />
F 120 L/min. pilot operation<br />
DOHR-8, DOJR-8:<br />
V Viton<br />
H 240 L/min. See pilot control 20 bar<br />
section for alternate<br />
J 480 L/min. options<br />
Visit www.sunhydraulics.com for current list pricing and complete technical information on all Sun products.<br />
Installation<br />
Torque<br />
(Nm)<br />
60 L/min. DODR – 8HN T-21A 35,0 22,2 45,2 45 - 50<br />
120 L/min. DOFR – 8HN T - 22A 35,0 28,6 50,8 60 - 70<br />
240 L/min. DOHR – 8HN T-23A 46,2 31,8 62,7 200 - 215<br />
480 L/min. DOJR – 8HN T - 24A 63,5 41,3 80,3 465 - 500<br />
P = bar<br />
20<br />
15<br />
10<br />
5<br />
P = bar<br />
20<br />
15<br />
10<br />
5<br />
10 20 30 40 50 60<br />
0 20 40 60 80 100 120<br />
0 40 80 120 160 200 240<br />
0 80 160 240 320 400 480<br />
Flow = L/min.<br />
Flow = L/min.<br />
Flow = L/min.<br />
Flow = L/min.<br />
1.4<br />
Pilot Pressure vs. Pilot Flow<br />
1.4<br />
1.4<br />
1.2<br />
1.2<br />
1.2<br />
1<br />
1<br />
1<br />
.8<br />
.8<br />
.8<br />
.6<br />
.6<br />
.6<br />
.4<br />
.4<br />
.4<br />
.2<br />
.2<br />
.2<br />
OPTION ORDERING INFORMATION<br />
Flow = L/min.<br />
Flow = L/min.<br />
P = bar<br />
Flow = L/min.<br />
20<br />
15<br />
10<br />
5<br />
106 Int’l <strong>Shortcut</strong> <strong>Catalogue</strong> #999-901-312