COA SERIES NAUTICAL CYLINDERS
Grices COA Series Marine Hydraulic Cylinders deliver excellent performance in marine applications, ensuring complete resistance to corrosion thanks to components made of AISI 316 stainless steel and OT58 brass. Designed for pressures of up to 12 MPa, they are ideal for moving hatches and extending marine gangways with maximum precision. Elastomer and nitrile seals ensure reliable hydraulic sealing over time. The available product codes are: COA 30, COA 40.
Grices COA Series Marine Hydraulic Cylinders are a key part of the standard marine product range offered by Grices, specifically designed to meet the strict and complex requirements of the maritime sector. Thanks to their clean design and the meticulous selection of construction materials, these hydraulic actuators stand out on the market for their excellent performance and outstanding resistance to the aggressive conditions typical of saline environments.
The main technical feature of this series is its complete resistance to corrosion, an exceptional result achieved through the combined use of premium-quality materials. Key structural components such as the tube, front end cap and rear end cap are manufactured entirely from OT58 brass, an alloy renowned for its exceptional durability in marine environments. The piston rod, which is the component subjected to the greatest mechanical wear during operation, is made of ground AISI 316 stainless steel, ensuring an optimal sliding surface and maintaining maximum performance over time. The carefully engineered combination of these construction elements ensures exceptionally high quality standards, significantly increasing the reliability and service life of the entire hydraulic cylinder.
The robust construction and clean design of Grices COA Series Marine Hydraulic Cylinders make them the ideal technical choice for specific applications on boats, commercial vessels and yachts. These hydraulic cylinders are particularly effective for the safe, smooth and precise movement of hatches, as well as for delicate gangway extension operations. Their suitability for continuous operation at a nominal pressure of 8 MPa, together with their ability to withstand maximum pressure peaks of up to 12 MPa, makes them highly versatile and efficient power components for marine industry professionals.
To ensure maximum operational safety and prevent any risk of leakage, each cylinder is equipped with premium-quality seals carefully manufactured from elastomer and nitrile. These seals, supplied exclusively by leading manufacturers, provide not only exceptional hydraulic sealing performance but also rapid and easy international availability, simplifying any maintenance operations. In dimensional terms, the series is available with bore sizes of 30 mm and 40 mm and offers a maximum operating stroke of up to 2000 mm, providing complete flexibility during design and installation. The excellence of the production process is also certified and guaranteed by the strictest quality controls: 100% of the cylinders manufactured undergo rigorous final hydraulic testing before being placed on the market. To place an order, technicians simply need to specify the required model code followed by the stroke length in millimetres, for example COA 30/500.
| Feature | Value |
|---|---|
| Nominal Pressure | 8 MPa (continuous operation) |
| Maximum Pressure | 12 MPa |
| Bore Size | 30 – 40 mm |
| Maximum Stroke | Up to 2000 mm |
| Piston Rod Material | Ground AISI 316 stainless steel |
| Tube and End-Cap Material | OT58 brass |
| Seal Material | Elastomer + Nitrile |
| CODE | AL | A | CD | D | E | EE | KK | MM | PJ | WH | XC | Y | ZB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| COA 30 | 30 | 18 | 12 | 15 | 40 | 1/8″ | M14x1,5 | 18 | 69 | 12 | 119 | 48 | 136 |
| COA 40 | 40 | 22 | 14 | 17 | 55 | 1/4″ | M16x1,5 | 22 | 59 | 12 | 106 | 45 | 123 |