The 7065-SB steering cylinder provides power assisted steering that is piloted by a conventional helm pump (see 7005 or 7012).  It features a servo valve that accurately relays helm pump commands to the steering cylinder. Designed in a balanced configuration, it provides consistent performance in both the starboard and port directions. 
The 7065-S has the following stroke and displacement ranges, assuming a single cylinder at 1,200 PSI [82.8 bar] at a 35 degree rudder angle & 45 degree rudder angle. 
    
        
            STROKE 
            in [mm] | 
            TORQUE 
            lbs-ft [Kg-m] 
             | 
             PILOT VOL 
            cu.in. [cc] | 
            CYL VOL 
            cu.in. [cc]  | 
        
        
            |   | 
             35 deg  | 
             45 deg | 
              | 
              | 
        
        
            |   7.5 [191]  | 
              2147 [297]  | 
            X  | 
            4.4 [72]  | 
            31 [507]  | 
        
        
            |  10 [254] | 
             2863 [396] | 
              2004 [277]  | 
            5.9 [97]  | 
            41 [672]  | 
        
        
            |  12 [305] | 
             3435 [475] | 
            2405 [333]  | 
            7.1 [116]  | 
            50 [803]  | 
        
        
            |  16 [406] | 
            4580 [633] | 
             3207 [443] | 
             9.4 [154] | 
             66 [1082]   |