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Resource > Autopilot Tutorial >

Raymarine Hydraulic Cylinder Ram Selection Chart




Hydraulic Cylinder Ram Selection Chart

Use the table below to determine which Raymarine hydraulic pump is appropriately sized for your steering ram.

Important Note

The information given in this table should be used for guidance only, if you are in any doubt as to the correct drive unit contact Raymarine’s Customer Support Team or consult with an authorized Raymarine dealer for further application advice.

Manufacturer and Cylinder Ram Model Number VOLUME CC VOLUME CU IN RAYMARINE PUMP SPECIAL NOTES
.       .
BCS . . . .
MT50 142cc 8.7cu in Type 1 See Note (1)
MT80 195cc 12cu in Type 1 / Type 2 See Note (1)
MType 105 261cc 15.9cu in Type 2 / Type 3 See Note (1)
MType 215 530cc 32.3cu in CR2 .
MType 300 750cc 45.8cu in CR2 .
MType 360 917cc 55.9cu in CR2 .
MT450 1266cc 77.2cu in - See Note (2)
MT550 1388cc 84.7cu in - See Note (2)
MT800 1984cc 121cu in - See Note (2)
MType 1160 2884cc 176cu in - See Note (2)
MType 1600 3856cc 235.2cu in - See Note (2)
. . . . .
HY-DRIVE . . . .
310 162cc 9.9cu in Type 1 / Type 2 See Note (1)
312 105cc 6.4cu in Type 1 See Note (1)
313 195cc 11.9cu in Type 1 / Type 2 See Note (1)
314 310cc 18.9cu in Type 2 / Type 3 See Note (1)
316 144cc 8.8cu in Type 1 See Note (1)
. . . . .
HYNAUTIC . . . .
K1 198cc 12.1cu in Type 1 / Type 2 See Note (1)
K2 288cc 17.6cu in Type 2 / Type 3 See Note (1)
K3 379cc 23.1cu in Type 3 / CR1 See Note (1)
K4 500cc 30.5cu in CR1 / CR2 See Note (1)
K10 123cc 7.5cu in Type 1 See Note (1)
K11 180cc 11.8cu in Type 1 / Type 2 See Note (1)
K12 141cc 8.6cu in Type 1 See Note (1)
K13 180cc 11cu in Type 1 / Type 2 See Note (1)
K14 141cc 8.6cu in Type 1 See Note (1)
K16 115cc 7cu in Type 1 See Note (1)
K17 147cc 9cu in Type 1 See Note (1)
K18 136cc 8.3cu in Type 1 See Note (1)
K19 148cc 9cu in Type 1 See Note (1)
K20 136cc 8.3cu in Type 1 See Note (1)
K22 218cc 13.3cu in Type 1 / Type 2 See Note (1)
K24 109cc 6.6cu in Type 1 See Note (1)
K25 218cc 13.3cu in Type 1 / Type 2 See Note (1)
K26 262cc 16cu in Type 2 / Type 3 See Note (1)
K27 218cc 13.3cu in Type 1 / Type 2 See Note (1)
K28 262cc 16cu in Type 2 / Type 3 See Note (1)
K29 262cc 16cu in Type 2 / Type 3 See Note (1)
K31 418cc 25.5cu in Type 3 / CR1 See Note (1)
K32 328cc 20cu in Type 2 /Type 3 See Note (1)
K33 377cc 23cu in Type 3 / CR1 See Note (1)
K51 167cc 10.2cu in Type 1 / Type 2 See Note (1)
. . . . .
KOBELT   . . .
(Model 7040) . . . .
B7.5 180cc 11cu in Type 1 / Type 2 See Note (1)
B5.5 131cc 8cu in Type 1 See Note (1)
B10 239cc 14.6cu in Type 2 .
(Model 7050) . . . .
.B7.5 333cc 20.3cu in Type 2 / Type 3 See Note (1)
B10 442cc 27cu in Type 3 / CR1 See Note (1)
B12 531cc 32.4cu in CR2 .
(Model 7080) . . . .
B7.5 718cc 43.8cu in CR2 .
B12 1149cc 70.1cu in CR2 .
B16 1531cc 93.4cu in - See Note (2)
(Model 7094) . . . .
U12 4326cc 264cu in - See Note (2)
U16 5768cc 352cu in - See Note (2)
U20 7210cc 440cu in - See Note (2)
U24 8652cc 528cu in - See Note (2)
U30 10815cc 660cu in - See Note (2)
(Model 7096) . . . .
U16 12979cc 792cu in - See Note (2)
U20 16223cc 990cu in - See Note (2)
U24 19468cc 1188cu in - See Note (2)
U30 24318cc 1484cu in - See Note (2)
U36 29185cc 1781cu in - See Note (2)
. . . . .
. . . . .
LS (POMPES) . . . .
(Outboard Cyl.) . . . .
28ST HB/HBR 141.6cc 8.64cu in Type 1 See Note (1)
VHM228 106cc 6.4cu in Type 1 See Note (1)
VHM232 112cc 6.8cu in Type 1 See Note (1)
(Inboard Cyl.) . . . .
VHM45 DT 240cc 14.6cu in Type 2 .
VHM45.228 268cc 16.3cu in Type 2 / Type 3 See Note (1)
VHM60 DT 505cc 30.8cu in CR2 .
VHM28 DTP 69.2cc 4.2cu in - See Note (2)
VHM32 DTP 120.5cc 7.35cu in Type 1 See Note (1)
VHM40 DTP 191cc 11.6cu in Type 1 / Type 2 See Note (1)
VHM40.254 239cc 14.5cu in Type 2 .
VHM50 DTP 352cc 21.5cu in Type 3 / CR1 See Note (1)
VHM50.300 464cc 28.3cu in CR1 .
VHM60.300 664cc 40.5cu in CR2 .
VHM80 DT 1167cc 71.2cu in CR2 .
VHM90 DT 1567cc 95.6cu in - See Note (2)
VHM110 DT 3076cc 187.7cu in - See Note (2)
VHM120 DT 3798cc 231.8cu in - See Note (2)
(Double Cyl. system) . . . .
VHM32 T 242cc 14.7cu in Type 2  
VHM40 T 378cc 23cu in Type 3 / CR1 See Note (1)
. . . . .
MARCON . . . .
MC10 118cc 7.2cu in Type 1 See Note (1)
MC12 152cc 9.3cu in Type 1 See Note (1)
MC14 118cc 7.2cu in Type 1 See Note (1)
MC16 152cc 9.3cu in Type 1 See Note (1)
MC18 118cc 7.2cu in Type 1 See Note (1)
MC20 152cc 9.3cu in Type 1 See Note (1)
MC22 118cc 7.2cu in Type 1 See Note (1)
MC24 152cc 9.3cu in Type 1 See Note (1)
MC40 152cc 9.3cu in Type 1 See Note (1)
MC41 152cc 9.3cu in Type 1 See Note (1)
MC42 197cc 12cu in Type 1 / Type 2 See Note (1)
MC43 197cc 12cu in Type 1 / Type 2 See Note (1)
MC44 152cc 9.3cu in Type 1 See Note (1)
MC46 197cc 12cu in Type 1 / Type 2 See Note (1)
MC60 225cc 13.7cu in Type 1 / Type 2 See Note (1)
MC62 288cc 17.6cu in Type 2 / Type 3 See Note (1)
MC64 225cc 13.7cu in Type 1 / Type 2 See Note (1)
MC66 288cc 17.6cu in Type 2 / Type 3 See Note (1)
MC50B 121cc 7.4cu in Type 1 See Note (1)
. . . . .
. . . . .
MAROL . . . .
MRB-30 75cc 4.6cu in ST5 .
MRB-50 108cc 6.6cu in Type 1 See Note (1)
MRB-63 154cc 9.4cu in Type 1 See Note (1)
MRB-80 395cc 24.1cu in Type 3 / CR1 See Note (1)
. . . . .
MORSE . . . .
HS3000 (303932) 107cc 6.5cu in Type 1 See Note (1)
HS4000 (303942) 188cc 11.5cu in Type 1 / Type 2 See Note (1)
HS5000 (308610) 222cc 13.6cu in Type 1 / Type 2 See Note (1)
. . . . .
SEIPEM . . . .
CD101 170cc 10.4cu in Type 1 / Type 2 See Note (1)
S151 320cc 19.5cu in Type 2 / Type 3 See Note (1)
S221 440cc 26.8cu in Type 3/CR1 See Note (1)
S301 530cc 32.3cu in CR2 .
S501 540cc 32.9cu in CR2 .
S701 1000cc 61cu in CR2 .
S1001 1680cc 102.5cu in - See Note (2)
S1501 2700cc 164.7cu in - See Note (2)
CV31 56cc 3.4cu in - See Note (2)
CV50 75cc 4.6cu in Type 1 .
CV51 81cc 4.9cu in Type 1 .
CV75 109cc 6.6cu in Type 1 See Note (1)
CV76 118cc 7.2cu in Type 1 See Note (1)
. . . . .
SERVI       .
MA40 120cc 7.3cu in Type 1 See Note (1)
MA60 141cc 8.6cu in Type 1 See Note (1)
MA120 294cc 17.9cu in Type 2 / Type 3 See Note (1)
MA200 500cc 30.5cu in CR1 / CR2 See Note (1)
MA300 750cc 45.7cu in CR2  
MA500 1270cc 77.5cu in - See Note (2)
. . . . .
SLEIPNER . . . .
LS450 90cc 5.5cu in ST5 .
LS451 152cc 9.3cu in Type 1 See Note (1)
LC452 129cc 7.9cu in Type 1 See Note (1)
LC453 240cc 14.6cu in Type 2 .
LC454 268cc 16.3cu in Type 2 / Type 3 See Note (1)
LC455 505cc 30.8cu in CR2 .
LC456 646cc 39.4cu in CR2 .
LC457 750cc 45.8cu in CR2 .
LC458 1167cc 71.2cu in CR2 .
LC459 1567cc 95.6cu in - See Note (2)
LC460 3076cc 187.6cu in - See Note (2)
LC461 3798cc 231.7cu in - See Note (2)
SP30 (71030) 68cc 4.2cu in - See Note (2)
SP60 (71060) 125cc 7.6cu in Type 1 See Note (1)
SP90 (71090) 215cc 13cu in Type 1 / Type 2 See Note (1)
. . . . .
TELEFLEX / SEASTAR . . . .
BA125-7 118cc 7.2cu in Type 1 See Note (1)
BA135-7 139cc 8.5cu in Type 1 See Note (1)
BA137-7 139cc 8.5cu in Type 1 See Note (1)
BA150-7 167cc 10.2cu in Type 1 / Type 2 See Note (1)
BA175-7 216cc 13.2cu in Type 1 / Type 2 See Note (1)
BA200-7 310cc 18.9cu in Type 2 / Type 3 See Note (1)
BA200-11 486cc 18.9cu in CR1 .
(Sterndrive Cyl.) . . . .
125-8EM 161cc 9.8cu in Type 1 / Type 2 See Note (1)
BA135-8EM 155cc 9.4cu in Type 1 See Note (1)
BA150-7EM 168cc 10.2cu in Type 1 / Type 2 See Note (1)
. . . . .
. . . . .
TENFJORD . . . .
JR1.10 100cc 6.1cu in Type 1 See Note (1)
JR1.20 210cc 12.8cu in Type 1 / Type 2 See Note (1)
JR1.25 214cc 13cu in Type 1 / Type 2 See Note (1)
JR1.30 340cc 20.7cu in Type 2 / Type 3 See Note (1)
JR1.35 367cc 22.4cu in Type 3 / CR1 See Note (1)
JR1.50 565cc 34.5cu in CR2 .
JR1.60 540cc 32.9cu in CR2 .
JR1.100 1174cc 71.6cu in CR2 .
. . . . .
. . . . .
VETUS . . . .
MType 30 67cc 4.1cu in - See Note (2)
MT45 152cc 9.3cu in Type 1 See Note (1)
MT52 104cc 6.3cu in Type 1 See Note (1)
MT65 152cc 9.3cu in Type 1 See Note (1)
MT72 146cc 8.9cu in Type 1 See Note (1)
MT80 190cc 11.6cu in Type 1 / Type 2 See Note (1)
MType 105 261cc 16cu in Type 2 / Type 3 See Note (1)
MType 110 275cc 16.8cu in Type 2 / Type 3 See Note (1)
MType 125 253cc 15.5cu in Type 2 / Type 3 See Note (1)
MType 140 350cc 21.3cu in Type 3 .
MType 175 356cc 21.7cu in Type 3 / CR1 See Note (1)
MType 215 532cc 32cu in CR2 .
MType 225 500cc 30.5cu in CR1 / CR2 See Note (1)
MType 340 750cc 45.8cu in CR2 .
MT450 1000cc 61cu in CR2 .
MT600 1319cc 80.5cu in - See Note (2)
MT900 1978cc 120.7cu in - See Note (2)
MType 1200 2638cc 161cu in - See Note (2)
OB35 106cc 6.44cu in Type 1 See Note (1)
OB85 170cc 10.35cu in Type 1 See Note (1)
. . . . .
. . . . .
WAGNER     . .
N-65 98cc 6cu in ST5 .
N-85 128cc 7.8cu in Type 1 See Note (1)
N40-120 127cc 7.7cu in Type 1 See Note (1)
N40-190 200cc 12.2cu in Type 1 / Type 2 See Note (1)
N50-190 314cc 19.1cu in Type 2 / Type 3 See Note (1)
N50-300 495cc 30.2cu in CR1 .
N80-190 802cc 49cu in CR2 .
N80-300 1267cc 77.3cu in - See Note (2)
N-175-750 241cc 14.7cu in Type 2 .
N-175-1000 321cc 19.6cu in Type 2 / Type 3 See Note (1)
N-250-800 541cc 33cu in CR2 .
N-250-1000 680cc 41.5cu in CR2 .
N-250-1300 878cc 53.6cu in CR2 .
N-350-1200 1541cc 94cu in - See Note (2)
T-2 162cc 9.9cu in Type 1 / Type 2 See Note (1)
T-3 377cc 23cu in Type 3 / CR1 See Note (1)
T-4 511cc 31.2cu in CR2 .
T-5 685cc 41.8cu in CR2 .
T-10 893cc 54.5cu in CR2 .
T-11 893cc 54.5cu in CR2 .
T-12 1257cc 76.7cu in - See Note (2)
T-12B 1508cc 92cu in - See Note (2)
T-13 1257cc 76.7cu in - See Note (2)
T-13B 1508cc 92cu in - See Note (2)
. . . . .
. . . . .
WHITLOCK SQUADRON . . . .
(Inboard Cyl.) . . . .
SRK222 115.6cc 7.05cu in Type 1 See Note (1)
SRK173 173cc 10.5cu in Type 1 / Type 2 See Note (1)
SRK116 222cc 13.47cu in Type 1 / Type 2 See Note (1)
(Outboard Cyl.) . . . .
SOB200 132.11cc 8.05cu in Type 1 See Note (1)
SOB200 163.24cc 9.97cu in Type 1 / Type 2 See Note (1)
SOB168 168cc 10.25cu in Type 1 / Type 2 See Note (1)
(Sterndrive Cyl.) . . . .
SSD133(B) 132.11cc 8.05cu in Type 1 See Note (1)
SSD135(UB) 132.11cc 8.05cu in Type 1 See Note (1)
. . . . .
. . . . .
WILLS - RIDLEY . . . .
T.50 136cc 8.3cu in Type 1 See Note (1)
T.100 283cc 17.3cu in Type 2 / Type 3 See Note (1)
T.160 354cc 21.6cu in Type 3 / CR1 See Note (1)
W.1(1.11/16) 403cc 24.6cu in Type 3 / CR1 See Note (1)
W.1(1.7/8) 508cc 31cu in CR2 .
W.2(2.3/8) 800cc 48.8cu in CR2 .
W.2(2.7/8) 1171cc 71.4cu in CR2 .
W.3(75) 1706cc 104cu in - See Note (2)
W.3(85) 2181cc 133cu in - See Note (2)
W.3(95) 2722cc 166cu in - See Note (2)
R. 2.5/9 543cc 33.13cu in CR2 .
R. 2.5/12 724cc 44.18cu in CR2 .
R. 3.25/8 927cc 56.5cu in CR2 .
R. 3.25/11.25 1304cc 79.5cu in - See Note (2)
R4/11.25 1984cc 121cu in - See Note (2)
R.5/11.5 2952cc 180cu in - See Note (2)
R.5/15.5 3968cc 242cu in - See Note (2)
2R. 3.25/11.25 2608cc 159cu in - See Note (2)
. . . . .

Selection Chart Notes

The recommended Raymarine pump in the following tables has been determined by cylinder displacement alone and should result in a nominal hardover to hardover time of 10 secs. The formula below can be used to determine the hardover time:

Hardover Time = (Ram Capacity) X 60 (Peak Flow Rate)

Note (1): Where the choice of two or more pumps are indicated the type, displacement and steering characteristics of the vessel should be considered. By choosing the larger pump with an increased flow rate a faster hardover time can be achieved, which on some vessels will result in improved Autopilot helm response and course keeping.

Note (2): The ram indicated is outside the Raymarine range of pumps.

The information given in this document should be used for guidance only, if you are in any doubt as to the correct drive unit contact Raymarine’s Customer Support Team for further application advice.




***The price is subject to change at anytime without any notice

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