HS Code: 847990100
The steering gear
The steering gear is a kind of large deck machinery. Its size is decided by the deck outfitting, and the deck outfitting is decided by the norm of classification society. The model of the steering gear is decided by the torque. The steering gear is popular with the spaceflight industry. For instance, the pitching, yaw and rolling movement of missile attitude are done by the interworking of the steering gear. It is are widely used in many projects apart from the shipping industry.
The marine steering gear is adopted with electro-hydraulic device, that is, the hydraulic equipment is operated by the electrical equipment in a remote-control manner. It has two kinds: one is reciprocating plunger-type steering gear and its theory is that its linear motion is done by the inter conversion from high-pressure oil to low-pressure oil and work, and its strength is changed into rotational movement. The other is rotating vane  steering gear and its theory is that high-pressure oil and low-pressure oil acts on the rotor directly. It has advantages such as small in size and high efficiency and disadvantages such as high cost, etc.
 
the specification and the name nominal toque(kN.m) loofing angle(°) time of rudder movement(S/65°) rudder system
3.5/8.5KN.m tilt cylinder type hydraulic steering engine 3.5/8.5 ±35 12,20,28  
8.5/12.5KN.m tilt cylinder type hydraulic steering engine 8.5/12.5 ±35 12,20,28  
10/16kN.m tilt cylinder type hydraulic steering engine 10/16 ±35 12,20,28 ,
10/16KN.m reciprocating type hydraulic steering engine 10/16 ±35 12,20,28 ,
25KN.m tilt cylinder type hydraulic steering engine 25 ±35 12,20,28 ,,
25/40KN.m reciprocating type hydraulic steering engine 25/40 ±35 12,20,28 ,,
40KN.m tilt cylinder type hydraulic steering engine 40 ±35 12,20,28 ,,
50KN.m reciprocating type hydraulic steering engine  50 ±35 12,20,28 ,,
Dych-50/52-DK-2Delectronic control type shifting fork hydraulic steering engine 50 ±35 12 ,,
63KN.m tilt cylinder type hydraulic steering engine 63 ±35 12,20,28 ,,
63/100KN.m reciprocating type hydraulic steering engine 63/100 ±35 12,20,28 ,
160KN.m electro-hydraulic steering engine 160 ±35 12,20,28 ,,
250KN.m electro-hydraulic steering engine 250 ±35 28 ,,
400KN.melectro-hydraulic steering engine 400 ±35 28 ,,
750KN.m reciprocating type hydraulic steering engine 750 ±35 28 ,,
850KN.m reciprocating type hydraulic steering engine 850 ±35 28 ,,
950KN.m reciprocating type hydraulic steering engine 950 ±35 28 ,,
1000KN.m reciprocating type hydraulic steering engine 1000 ±35 28 ,,
1100KN.m reciprocating type hydraulic steering engine 1100 ±35 28 ,,
1200KN.m reciprocating type hydraulic steering engine 1200 ±35 28 ,,
 note:the specific technical parameters are subject to the technical specification and the drawing.