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ULTRAFLEX
1.4 UC128-OBF cylinder description
UC128-OBF is a hydraulic outboard front mount cylinder which has been designed and manufactured to be used
as a component in the hydraulic steering systems, as described in the previous paragraph.
The cylinder is installed to the tilt tube rod of the available engines on the market as shown in the attached docu-
ment "Application guide". It is possible to meet all the different cylinder applications due to the three different link
arms and a proper spacer kit. For the dual engine application, the single cylinder must be mounted with a tie bar
(see par. 1.3) or two cylinders (standard + port) connected by a tie bar can be used. In the standard version the
link arm is mounted on the starboard side, while in the port version it is mounted on the port side (see picture in
par. 1.5). The following picture shows the main cylinder components:
1
Cylinder body
2
Bleeders
3
Bull horns
4
Tilt tube rod
5
Spacers
6
Adjustment collar
7a
Straight link arm (UC128-OBF/1)
7b
Shaped link arm (UC128-OBF/2)
7c
Curved link arm (UC128-OBF/3)
1.5 Technical features
SPECIFICATIONS
Volume
Output force
450 Kg - 992 lbs (@70 bar)
Inside diameter
Stroke
Oil
STANDARD VERSION (STARBOARD)
CAUTION
*The cylinder output force is a theoretical force with a system pressure of 105 bar. This force does not correspond
to the one normally used by the system but it represents the limiting conditions of use.
UC128-OBF/1 -/2 -/3
120 cc - 7.8 cu. in
35 mm - 1.37"
198 mm - 7.79"
OL150 Ultraflex
HYDRAULIC CYLINDER FOR OUTBOARD ENGINE
Installation and Maintenance Manual
6
5
2
1
PORT VERSION
7a
7c
7b
4
3
544 mm (21.43")
page 11
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of 103
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