Maintenance, Upkeep - Rohm OVUSHH Instrucciones De Servicio

6. Maintenance, upkeep

6.1 Maintenance:
The through-hole type dual piston cylinder with distribu-
tor requires no regular maintenance as long as a pulsa-
ting oil pressure will be supplied to the both outer inlets
(nomally inlet "A" and "C") during rotation. Oil pressure
min 5 bar. Pulse duration approx. 5 seconds, dead time
up to 15 mins.
6.2 Upkeep:
After 6500 hours of operation or whenever there is a loss
of pressure, remove the cylinder from the spindle and
disassemble it. Clean all parts and check them for wear.
It is generally good practice to replace all sealing ele-
ments or at least those subject to dynamic stress. For
this reason, 1 set of the sealing elements identified in
the parts list and a supply of consumable items should
be stocked at all times.
To reassembly the cylinder, reverse the disassembly
procedure. Make sure that marked parts or parts requi-
ring a specific position are assembled in the intended
position in order to avoid unbalance or malfunctions.
Important: Do not damage seals with tools or sharp
edges.
Size
Piston stroke
Ident-No. (without cylinder adaptor plate)
Diam. piston 1
Diam. piston 2
(Reduction possible down to 50 mm)
Stroke piston 1
(Red. possible down to appr. 10 mm)
Stroke piston 2
(Enlargement possible up to 45 mm)
Piston area
Eff. draw bar pull (F=40 bar)
Max. permissible speed
Volume for full double stroke
Moment of inertia J
Weight approx.
Dimensions E, F, G, H are referring to the machine, please state when ordering.
A
B
C
1
C
2
D
1
D
2
min.
K
1
max.
min.
K
2
max.
min.
Q
max.
2
A cm
Piston 1
2
B cm
2
C cm
Piston 2
2
D cm
1 daN
2 daN
--1
min
1 l
2 l
2
kgm
kg
To keep the cylinder damaged, it is good practice to reba-
lance it after reassembly. At speeds over 3000 rpm, this
precaution is a "must".
On request, reassembled cylinders will be rebalanced
against charge at the Röhm factory or on the customer's
premises by one of our fitters with the aid of a portable
balancing machine.
Reassembled cylinders should at least be checked for vibra-
tions which were not present before the cylinder was disas-
sembled.
This is all the services which the cylinder requires.
We strongly recommend to have any maintenance work
carried out by the manufacturer
to ensure operational safety
and guaranteed function.
120/80 120/80
45/8 75/8
419724 419727
168 168
248 278
120 120
80 80
45 75
8 8
40 10
85 85
22 --8
30 0
37 7
82 82
93,5 93,5
103,7 103,7
45,4 45,4
46,1 46,1
3800 3800
1800 1800
5000 5000
0,86 1,42
0,1 0,1
0,13 0,14
42,2 44,7
Anschlüsse
Connections
Anschlüsse
Connections
140/80 160/80
45/8 45/8
419725 419726
188 208
248 248
140 160
80 80
45 45
8 8
40 40
85 85
22 22
30 30
37 37
82 82
134,5 181,4
144,5 191,6
45,4 45,4
46,1 46,1
5600 7400
1800 1800
5000 5000
1,26 1,67
0,1 0,1
0,18 0,25
46,5 51,3
17