| TYPE | RAPSON SLIDE(RAM) Type | ROTARY VANE Type |
| Advantages |
1.
| Its compact design, light weight and its use of a hydraulic pump make it excellent for handling high pressure. |
2.
| Tiller and Actuator (Cylinder, RAM, etc.) Our Tillers and Actuators are separated from one and other so that repair and replacement of the oil seal is easy. Additionally, this construction makes identifying oil leakage much more effective. |
3.
| After Service and Maintenance after Installation | |
| 1. | Only a small in install area is required. |
| 2. | A wide steering degree is possible. | |
| Disadvantages |
1.
| The installation area is larger than RV type. |
| 2. | Steering is limited to 45 degrees. | |
1.
| Owing to the seam between the actuator vane and the casing, establishment of stock and actuator centering is difficult. Also, gears which operate under a great deal of pressure (such as keyless gears) need a high degree of seem control to prevent rotary vane deformation of the rotor. |
2.
| Due to the straight line construction of rotary vane and stationary vane steering gears, oil seals are difficult to
maintain. Auto-pilot control is difficult due to irregular oil leakage. |
3.
| To check and repair oil seals an overhaul is necessary. The lower vane area is particularly difficult to check in this construction. |
4.
| Structurally, foreign materials accumulate in the lower portion of the casing, which are then distributed throughout the equipment leading to a shorter life span of the machinery. |
| 5. | Requires greater HP. |
6.
| Due to the requirement of greater
HPU the unit size is larger. | |
