OH/1-OH/8-01
HYDROSTATIC STEERING UNITS TYPE OH/1...OR - OH/1-OH/8
The OH/1 - OH/8 Hydrostatic Steering unit is based on the OH unit but has built-in relief and check
valves. Thus Meta Hydraulic achieves one very compact steering unit which reduces the need for
additional hydraulic components in the system.
"Open Center - Load Reaction"
With Built-in Valves
Version OH/1...OR
LR
PT
LR
PT
LR
PT
"Open Center - Non Load Reaction"
With Built-in Valves
Version OH/1
"Open Center - Non Load Reaction"
With Built-in Valve
Version OH/8
SPECIFICATION DATA
Parameters
Type
OH/1,8
40
OH/1,8
50
OH/1,8
63
OH/1,8
80
OH/1,8
100
OH/1,8
125
OH/1,8
160
OH/1,8
200
OH/1,8
250
OH/1,8
320
OH/1,8
400
Displacement, (cm³/rev)
39,6 49,5 65,6 79,2 99,0 123,8 158,4
198
247,5 316,8
396
Rated flow, (L/min)
4
56 9
12 17 24
30 40
Rated Pressure, (bar)
160
Relief Valve Pressure Settings, [bar]
80 100 125 150
Shock Valves Pressure Settings, [bar]
140 160 180 200
Max. cont. Pressure in Line T-P
T, (MPa) 20 (50 - for OH.../8)
Max. Torque at Servoamplifing, [Nm] 6 (by P
T max)
Max. Torque w/o Servoamplifing, [Nm]
120
Weight, avg., [kg]
5,3
5,5
5,6
5,7
5,8 5,9 6,2 6,5 6,6 7,2 7,8
Dimension A, (mm)
130,8 132,2 133,9 136,2 138,8 142,2 146,8 152,2 158,8 168,2 178,8
Pressure Settings are at Rated Flow (as in the table ) and viscosity 21 mm²/s (50° C).
Pressure Settings are at flow rate of 2 l/min and viscosity 21 mm²/s (50° C).
OH/1-OH/8-02
DIMENSIONS AND MOUNTING DATA
Threaded Port P min 16 mm depth.
P
4
5
°
4
5
°
91
58.5
84
103.5
B
Ø82±0.1
19 mm depth, ANSI B92.1-1976
DP 16/32 ,12 teeth
44±0.15352.8
A
Ø44.4
60±0.15
-0.2
0
7
57
V
T
RL
44±0.15
THREADED PORTS
Code
Ports - P, T, R, L
Thread
Column Mounting
Thread - B
Valve Mounting
Thread- V
-
G1/2
17 mm depth
4 x M10
18 mm depth
2 x M10x1
16 mm depth
A
3/4 - 16 UNF
O-ring 17 mm depth
4 x 3/8 - 16 UNC
15,7 mm depth
2 x 3/8 - 24 UNF
14,2 mm depth
M
M22x1,5
17 mm depth
4 x M10
18 mm depth
2 x M10x1
16 mm depth
OH/1-OH/8-03
OH
12345
ORDER CODE for OH/1 - OH/8
1
Versions
1
Version OR “Open Center - Load Reaction”
1
Version 1 “Open Center - Non Load Reaction”
8
Version 8 “Open Center - Non Load Reaction”
2
Displacement code (see Specification Data)
40
39,6 [cm³/rev]
50
49,5 [cm³/rev]
63
65,6 [cm³/rev]
80
79,2 [cm³/rev]
100
99,0 [cm³/rev]
125
123,8 [cm³/rev]
160
158,4 [cm³/rev]
200
198,0 [cm³/rev]
250
247,5 [cm³/rev]
320
316,8 [cm³/rev]
400
396,0 [cm³/rev]
3
Relief Valve Pressure Settings, bar
80
100
125
150
175
4
Ports
omit
BSPP (ISO 228)
A
SAE (ANSI B 1.1 - 1982)
M
Metric (ISO 262)
5
Option (Paint)
omit No Paint
P
Painted
PC Corrosion Protected Paint
6
Version
OR
Version OR “Open Center - Load Reaction”
omit
“Open Center - Non Load Reaction”
/
-
Colour at customer’s request.
The steering units are mangano-phosphatized as standard.
-
6
Version
Manual
Steering
Check Valve
Relief
Valve
Inlet
Check
Valve
Cylinder
Relief
Valve
Anti-
Cavitation
Valve
1-.-..OR
●●●
●
1
●●●
●●
8
●
●
●
