Installation and Maintenance Manual
page 8
of 23 -
HYDRAULIC CYLINDERS FOR INBOARD ENGINES
1.3 Cylinder description
The hydraulic cylinders for inboard engine UC 69-I, UC 116-I, UC 168-I, UC 215-I and UC 293-I models have
been designed and manufactured to be used as a component in the hydraulic steering systems, as described
in the previous paragraph.
The cylinder with mobile rod is installed directly to the arm of the helm through the proper ball joint on the
end part of the cylinder. On the opposite side it is fixed directly to the boat through a support with plate (see
par. 3.2). For the dual helm application, the single cylinder must be mounted with a tie bar. The following
picture shows the main cylinder components:
1.4 Technical features
Cylinder body
Hose and purge connections
Ball joint
Support with mounting bracket
Rod
1
2
3
4
2
1
4
3
5
5
A
C
B
D
E
*The cylinder thrust indicated is theoretical calculated with a system pressure as shown in the table. This
thrust does not correspond to the one generally used by the system but it represents the limit condition of use.
WARNING
SPECIFICATIONS
UC 69-I
UC 116-I
UC 168-I
UC 215-I
UC 293-I
A
644 mm [25.33"]
741 mm [22.17"]
792 mm [31.18"]
941 mm [37.05"]
794 mm [31.26"]
B
494 mm [19.43"]
563 mm [29.17"]
614 mm [24.17"]
713 mm [28.07"]
616 mm [24.25"]
C (stroke)
150 mm [5.9"]
178 mm [7"]
178 mm [7"]
228 mm [8.98"]
178 mm 7"]
D
40 mm [1.57"]
40 mm [1.57"]
40 mm [1.57"]
40 mm [1.57"]
40 mm [1.57"]
E
73 mm [2.87"]
73 mm [2.87"]
105 mm [4.13"]
105 mm [4.13"]
125 mm [4.92"]
Volume
69 cc - 4.2 cu. in
116 cc - 7 cu. in
168 cc - 10.25 cu. in 215 cc - 13.12 cu. in
293 cc - 17.8 cu. in
Maximum thrust*
3233 N - 330 kg -
727 lbs @70 bar
6828 N - 696 kg -
1534 lbs @ 105 bar
9895 N - 1009 kg -
2224 lbs @ 105 bar
9895 N - 1009 kg -
2224 lbs @ 105 bar
17317 N - 1765 kg -
3892 lbs @ 105 bar
Bore
25 mm [0.98"]
32 mm [1.25"]
40 mm [1.57"]
40 mm [1.57"]
50 mm [1.97"]
Oil
OIL15
OIL15
OIL15
OIL15
OIL15
