Hydraulic cylinders and accessories |
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Hydraulic cylinders and accessories |
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| Hydraulic cylinders |
| The JEFA hydraulic parts are produced by one of
the largest hydraulic steering companies in the world: Lecomble &
Schmitt (www.ls-france.com).
Jefa has been a distributor for these hydraulic components for many
years now and we only have positive experiences with this high quality
equipment.
Please click on the picture for a larger view. |
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| General measurements of the hydraulic cylinders |
| Cylinder | Max. Torque |
Max. Press. |
Volume cc |
Weight Kg |
HC | PC | DP | HR | OFF | FW | FL | LB | LC | ST | RT |
| VHM35 DTP | 60 Kgm | 50 b. | 150 | 4 | 100 | 1/4 BSP | 15 | 12 | 163 | 110 | 80 | 143 | 497 | 200 | 180 |
| VHM40 DTP | 84 Kgm | 50 b. | 191 | 4,2 | 100 | 1/4 BSP | 17 | 14 | 160 | 110 | 80 | 122 | 535 | 204 | 180 |
| VHM40-254 | 105 Kgm | 50 b. | 239 | 4,5 | 100 | 1/4 BSP | 17 | 14 | 200 | 110 | 80 | 147 | 612 | 254 | 220 |
| VHM50 DTP | 185 Kgm | 60 b. | 352 | 5 | 110 | 3/8 BSP | 20 | 16 | 180 | 140 | 105 | 134 | 583 | 228 | 200 |
| Hydraulic accessories |
| Hydraulic fittings and flexible hoses |
| To ease the installation we have available a range of
fixed length flexible hoses with 3/8" BSP ends. The available lengths
are 1, 2, 3, 5 and 8 metres. The connections on the pedestal are all
3/8" BSP. To connect the flexible hoses to the smaller cylinders
you need to use the converter fitting from 3/8" BSP to 1/4"
BSP.
Please click on the picture for a larger view. |
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| Hydraulic lock valve |
| The hydraulic pump in the pedestal is not equipped with a
lock valve (non-return valve). The consequence is that the rudder
pressure can be felt on the steering wheel, and when the helmsman
loosens the wheel, the wheel will rotate back to the mid position. When
this feature isn't appreciated, one should us a lock valve to prevent
oil to flow back to the pump.
When the hydraulic system is equipped with a second pump (for inside steering) or a hydraulic autopilot drive one should always us a lock valve between the pedestal and the rest of the hydraulic system. This will force the oil to the cylinder and prevent it to take the easy route to the pump and cause the wheel to rotate. |
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Hydraulic cylinders and accessories |
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| Part No. | Description | Price in Euro |
| 2200078 | Lock valve for max 90cc pump | € 276 |
| 2200222 | VHM35 DTP cylinder 150cc, stroke 200mm | € 386 |
| 2200075 | VHM40 DTP cylinder 191cc, stroke 204mm | € 431 |
| 2200496 | VHM40-254 cylinder 239cc, stroke 254mm | € 464 |
| 2200497 | VHM50 DTP cylinder 352cc, stroke 228mm | € 850 |
| HF3812 | Straight fitting 3/8" x 3/8" mm | € 5 |
| HF1412 | Straight fitting 1/4" x 3/8" mm | € 5 |
| HT12-100 | Flexible hose 1m length, 3/8"mm ends | € 26 |
| HT12-200 | Flexible hose 2m length, 3/8" mm ends | € 38 |
| HT12-300 | Flexible hose 3m length, 3/8" mm ends | € 52 |
| HT12-500 | Flexible hose 5m length, 3/8" mm ends | € 77 |
| HT12-800 | Flexible hose 8m length, 3/8" mm ends | € 116 |
| HYD-OIL-1 | Container of one litre 22 grade hydraulic oil | € 12 |
