Cylinder Ram Size 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 142 8.7 Type 0.5/Type 1 See Note 1
MT80 195 12 Type 1/Type 2 See Note 1
MType 105 261 15.9 Type 2/Type 3 See Note 1
MType 215 530 32.3 Constant Running -
MType 300 750 45.8 Constant Running -
MType 360 917 55.9 Constant Running -
MT450 1266 77.2 - See Note 2
MT550 1388 84.7 - See Note 2
MT800 1984 121 - See Note 2
MType 1160 2884 176 - See Note 2
MType 1600 3856 235.2 - See Note 2
HY-DRIVE
310 162 9.9 Type 1/Type 2 See Note 1
312 105 6.4 Type 0.5/Type 1 See Note 1
313 195 11.9 Type 1 See Note 1
314 310 18.9 Type 2/Type 3 See Note 1
316 144 8.8 Type 0.5/Type 1 See Note 1
HYNAUTIC
K1 198 12.1 Type 1 See Note 1
K2 288 17.6 Type 2/Type 3 See Note 1
K3 379 23.1 Type 3/ Constant Running See Note 1
K4 500 30.5 Type 3/ Constant Running See Note 1
K10 123 7.5 Type 0.5/Type 1 See Note 1
K11 180 11.8 Type 1 See Note 1
K12 141 8.6 Type 0.5/Type 1 See Note 1
K13 180 11 Type 1 See Note 1
K14 141 8.6 Type 0.5/Type 1 See Note 1
K16 115 7 Type 0.5/Type 1 See Note 1
K17 147 9 Type 0.5/Type 1 See Note 1
K18 136 8.3 Type 0.5/Type 1 See Note 1
K19 148 9 Type 0.5/Type 1 See Note 1
K20 136 8.3 Type 0.5/Type 1 See Note 1
K22 218 13.3 Type 1/Type 2 See Note 1
K24 109 6.6 Type 0.5/Type 1 See Note 1
K25 218 13.3 Type 1/Type 2 See Note 1
K26 262 16 Type 2/Type 3 See Note 1
K27 218 13.3 Type 1/Type 2 See Note 1
K28 262 16 Type 2/Type 3 See Note 1
K29 262 16 Type 2/Type 3 See Note 1
K31 418 25.5 Type 3 See Note 1
K32 328 20 Type 2/Type 3 See Note 1
K33 377 23 Type 3 See Note 1
K51 167 10.2 Type 1/Type 2 See Note 1
KOBELT
Model 7040
B7.5 180 11 Type 1/Type 2 See Note 1
B5.5 131 8 Type 0.5/Type 1 See Note 1
B10 239 14.6 Type 2 -
Model 7050
B7.5 333 20.3 Type 2/Type 3 See Note 1
B10 442 27 Type 3 See Note 1
B12 531 32.4 Constant Running -
Model 7080
B7.5 718 43.8 Constant Running -
B12 1149 70.1 Constant Running -
Model 7094
U12 4326 264 - See Note 2
U16 5768 352 - See Note 2
U20 7210 440 - See Note 2
U24 8652 528 - See Note 2
U30 10815 660 - See Note 2
Model 7096
U16 12979 729 - See Note 2
U20 16223 990 - See Note 2
U24 19468 1188 - See Note 2
U30 24318 1484 - See Note 2
U36 29185 1781 - See Note 2
LS (POMPES)
Outboard Cylinder
28ST HB/HBR 141.6 8.64 Type 0.5/Type 1 See Note 1
VHM228 106 6.4 Type 0.5/Type 1 See Note 1
VHM232 112 6.8 Type 0.5/Type 1 See Note 1
Inboard Cylinder
VHM45 DT 240 14.6 Type 2 -
VHM45.228 268 16.3 Type 2/Type3 See Note 1
VHM60 DT 505 30.8 Constant Running -
VHM28 DTP 69.2 4.2 Type 0.5 See Note 2
VHM32 DTP 120.5 7.35 Type 0.5/Type 1 See Note 1
VHM40 DTP 191 11.6 Type 1/Type 2 See Note 1
VHM40.254 239 14.5 Type 2 -
VHM50 DTP 352 21.5 Type 3 See Note 1
VHM50.300 464 28.3 Type 3 -
VHM60.300 664 40.5 Constant Running -
VHM80 DT 1167 71.2 Constant Running -
VHM90 DT 1567 95.6 - See Note 2
VHM110 DT 3076 187.7 - See Note 2
VHM120 DT 3798 2311.8 - See Note 2
Double Cylinder System
VHM32 T 242 14.7 Type 2 -
VHM40 T 378 23 Type 3 See Note 1
MARCON
MC10 118 7.2 Type 0.5/Type 1 See Note 1
MC12 152 9.3 Type 0.5/Type 1 See Note 1
MC14 118 7.2 Type 0.5/Type 1 See Note 1
MC16 152 9.3 Type 0.5/Type 1 See Note 1
MC18 118 7.2 Type 0.5/Type 1 See Note 1
MC20 152 9.3 Type 0.5/Type 1 See Note 1
MC22 118 7.2 Type 0.5/Type 1 See Note 1
MC24 152 9.3 Type 0.5/Type 1 See Note 1
MC40 152 9.3 Type 0.5/Type 1 See Note 1
MC41 152 9.3 Type 1 See Note 1
MC42 197 12 Type 1/Type 2 See Note 1
MC43 197 12 Type 1/Type 2 See Note 1
MC44 152 9.3 Type 0.5/Type 1 See Note 1
MC46 197 12 Type 1/Type 2 See Note 1
MC60 225 13.7 Type 1/Type 2 See Note 1
MC62 288 17.6 Type 2/Type 3 See Note 1
MC64 225 13.7 Type 1/Type 2 See Note 1
MC66 288 17.6 Type 2/Type 3 See Note 1
MC50B 121 7.4 Type 0.5/Type 1 See Note 1
MAROL
MRB-30 75 4.6 Type 0.5 -
MRB-50 108 6.6 Type 0.5/Type 1 See Note 1
MRB-63 154 9.4 Type 0.5/Type 1 See Note 1
MRB-80 395 24.1 Type3 See Note 1
MORSE
HS3000 (303932) 107 6.5 Type 0.5/Type 1 See Note 1
HS4000 (303942) 188 11.5 Type 1/Type 2 See Note 1
HS5000 (308610) 222 13.6 Type 1/Type 2 See Note 1
SEIPEM
CD101 170 10.4 Type 1/Type 2 See Note 1
S151 320 19.5 Type 2/Type 3 See Note 1
S221 440 26.8 Type 3 See Note 1
S301 530 32.3 Constant Running -
S501 540 32.9 Constant Running -
S701 1000 61 Constant Running -
S1001 1680 102.5 - See Note 2
S1501 2700 164.7 - See Note 2
CV31 56 3.4 Type 0.5 See Note 2
CV50 75 4.6 Type 0.5 -
CV51 81 4.9 Type 0.5/Type1 -
CV75 109 6.6 Type 0.5/Type1 See Note 1
CV76 118 7.2 Type 0.5/Type1 See Note 1
SERVI
MA40 120 7.3 Type 0.5/Type1 See Note 1
MA60 141 8.6 Type 0.5/Type1 See Note 1
MA120 294 17.9 Type 2/Type 3 See Note 1
MA200 500 30.5 Constant Running See Note 1
MA300 750 45.7 Constant Running See Note 1
MA500 1270 77.5 - See Note 1
SLEIPNER
LS450 90 5.5 Type 0.5 -
LS451 152 9.3 Type 1 See Note 1
LC452 129 7.9 Type 1 See Note 1
LC453 240 14.6 Type 2 -
LC454 268 16.3 Type 2/Type 3 See Note 1
LC455 505 30.8 Constant Running -
LC456 646 39.4 Constant Running -
LC457 750 45.8 Constant Running -
LC458 1167 71.2 Constant Running -
LC459 1567 95.6 - See Note 2
LC460 3076 187.6 - See Note 2
LC461 3798 231.7 - See Note 2
SP30 (71030) 68 4.2 Type 0.5 See Note 2
SP60 (71060) 125 7.6 Type 0.5/Type 1 See Note 1
SP90 (71090) 215 13 Type 1/Type 2 See Note 1
TELEFLEX/SEASTAR
BA125-7 118 7.2 Type 0.5/Type 1 See Note 1
BA135-7 139 8.5 Type 0.5/Type 1 See Note 1
BA137-7 139 8.5 Type 0.5/Type 1 See Note 1
BA150-7 167 10.2 Type 1/Type 2 See Note 1
BA175-7 216 13.2 Type 1/Type 2 See Note 1
BA200-7 310 18.9 Type 3 See Note 1
BA200-11 486 18.9 CR1 See Note 1
Sterndrive Cylinder
125-8EM 161 9.8 Type 0.5/Type 1 See Note 1
BA135-8EM 155 9.4 Type 0.5/Type 1 See Note 1
BA150-7EM 168 10.2 Type 1/Type 2 See Note 1
TENFJORD
JR1.10 100 6.1 Type 0.5/Type 1 See Note 1
JR1.20 210 12.8 Type 1/Type 2 See Note 1
JR1.25 214 13 Type 1/Type 2 See Note 1
JR1.30 340 20.7 Type 3 See Note 1
JR1.35 367 22.4 Type 3 See Note 1
JR1.50 565 34.5 Constant Running -
JR1.60 540 32.9 Constant Running -
JR1.100 1174 71.6 Constant Running -
VETUS
MT30 67 4.1 Type 0.5/Type 1 See Note 1
MT45 152 9.3 Type 0.5/Type 1 See Note 1
MT52 104 6.3 Type 0.5/Type 1 See Note 1
MT65 152 9.3 Type 0.5/Type 1 See Note 1
MT72 146 8.9 Type 0.5/Type 1 See Note 1
MT80 190 11.6 Type 2/Type 3 See Note 1
MType 105 261 16 Type 2/Type 3 See Note 1
MType 110 275 16.8 Type 2/Type 3 See Note 1
MType 125 253 15.5 Type 3 -
MType 140 350 21.3 Type 3 See Note 1
MType 175 356 21.7 Type 3 -
MType 215 532 32 Constant Running See Note 1
MType 225 500 30.5 Constant Running -
MType 340 750 45.8 Constant Running -
MT450 1000 61 Constant Running  
MT600 1319 80.5 - See Note 2
MT900 1978 120.7 - See Note 2
MType 1200 2638 161 Type 1 See Note 2
OB35 106 6.44 Type 0.5 / Type 1 See Note 1
OB85 170 10.35 Type 1 See Note 1
WAGNER
N-65 98 6 Type 0.5 / Type 1 -
N-85 128 7.8 Type 0.5 / Type 1 See Note 1
N40-120 127 7.7 Type 0.5 / Type 1 See Note 1
N40-190 200 12.2 Type 1/Type 2 See Note 1
N50-190 314 19.1 Type 2/Type 3 See Note 1
N50-300 495 30.2 Constant Running -
N80-190 802 49 Constant Running -
N80-300 1267 77.3 - See Note 2
N-175-750 241 14.7 Type 2 -
N-175-1000 321 19.6 Type 2/Type 3 See Note 1
N-250-800 541 33 Constant Running -
N-250-1000 680 41.5 Constant Running -
N-250-1300 878 53.6 Constant Running -
N-350-1200 1541 94 - See Note 2
T-2 162 9.9 Type 1/Type 2 See Note 1
T-3 377 23 Type 3 See Note 1
T-4 511 31.2 Constant Running -
T-5 685 41.8 Constant Running -
T-10 893 54.5 Constant Running -
T-11 893 54.5 Constant Running -
T-12 1257 76.7 - See Note 2
T-12B 1508 92 - See Note 2
T-13 1257 76.7 - See Note 2
T-13B 1508 92 - See Note 2
WHITLOCK SQUADRON
Inboard Cylinder
SRK222 115.6 7.05 Type 0.5/Type 1 See Note 1
SRK173 173 10.5 Type 1/Type 2 See Note 1
SRK116 222 13.47 Type 1/Type 2 See Note 1
Outboard Cylinder
SOB200 132.11 8.05 Type 0.5/Type 1 See Note 1
SOB200 163.24 9.97 Type 0.5/Type 1 See Note 1
SOB168 168 10.25 Type 1/Type 2 See Note 1
Sterndrive Cylinder
SSD133(B) 132.11 8.05 Type 0.5/Type 1 See Note 1
SSD135(UB) 132.11 8.05 Type 0.5/Type 1 See Note 1
WILLIS-RIDLEY
T.50 136 8.3 Type 0.5/Type 1 See Note 1
T.100 283 17.3 Type 2/Type 3 See Note 1
T.160 354 21.6 Type 3 See Note 1
W.1(1.11/16) 403 24.6 Type 3 See Note 1
W.1(1.7/8) 508 31 Constant Running -
W.2(2.3/8) 800 48.8 Constant Running -
W.2(2.7/8) 1171 71.4 Constant Running -
W.3(75) 1706 104 - See Note 2
W.3(85) 2181 133 - See Note 2
W.3(95) 2722 166 - See Note 2
R.2.5/9 543 33.13 Constant Running -
R.2.5/12 724 44.18 Constant Running -
R.3.25/8 927 56.5 Constant Running -
R.3.25/11.25 1304 79.5 - See Note 2
R.4/11.25 1984 121 - See Note 2
R.5/11.5 2952 180 - See Note 2
R.5/15.5 3968 242 - See Note 2
2R.3.25/11.25 2608 159 - See Note 2

 

Selection Chart Notes

 

The recommended Raymarine pump in the table above 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.