Description
DOMETIC SEASTAR Inboard Steering Cylinder BA125-7ATM – HC5312-3
The Dometic SeaStar HC5312-3 is a BA125-7ATM inboard hydraulic steering cylinder for single- and dual-rudder vessels. It is built for low-friction hydraulic steering and easy autopilot interface in properly sized SeaStar inboard steering systems.
Main Features
- Regular marine-duty aluminum inboard cylinder for a wide range of boat steering applications.
- Two-axis articulation helps align the cylinder with the tiller arm or tie bar.
- Designed for single- and dual-rudder installations when sized according to the SeaStar inboard guide.
- Compatible with SeaStar steering fluid and SeaStar inboard hydraulic system components.
- Dometic data lists 7 in. stroke, 1000 psi maximum pressure, and SAE ports.
Product Specifications
- Manufacturer Part Number: HC5312-3
- Cylinder Model: BA125-7ATM
- Cylinder Type: Inboard
- Stroke: 7 in. / 178 mm
- Bore Diameter: 1.25 in. / 31.7 mm
- Shaft Diameter: 0.63 in. / 16 mm
- Volume: 7.2 cu. in. / 118 cc
- Maximum Pressure: 1000 psi
- Port Type: SAE

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