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MG Duff ZSA Zinc Spherical Propeller Shaft Anodes – Ø38–57 mm Shaft
The MG Duff ZSA Zinc Spherical Anodes are sacrificial anodes designed to protect marine propeller shafts against galvanic corrosion. Manufactured from zinc, these anodes feature rounded bodies and are available in three sizes to accommodate different shaft diameters.
The range includes ZSA150 for 38 mm (1 1/2") shafts, ZSA200 for 51 mm (2") shafts and ZSA225 for 57 mm (2 1/4") shafts. The models differ in their shaft compatibility, external body diameter and overall length.
Key Features
- Brand: MG Duff
- Product Series: ZSA
- Product Type: Sacrificial propeller shaft anode
- Material: Zinc
- Shape: Spherical / rounded
- Application: Marine propeller shaft corrosion protection
- Available Shaft Diameters: 38, 51 and 57 mm
- Imperial Shaft Sizes: 1 1/2", 2" and 2 1/4"
- External Anode Diameters: 70, 91 and 108 mm
- Anode Lengths: 63, 73 and 95 mm
- Available Models: ZSA150, ZSA200 and ZSA225
- Sales Unit: 1 piece
Technical Specifications and Available Models
The MG Duff ZSA range includes three spherical zinc anodes. Shaft diameter refers to the diameter of the propeller shaft, while body diameter refers to the external diameter of the anode itself.
Model Technical Specifications ZSA150 Shaft Diameter: 38 mm (1 1/2")
Anode Diameter: 70 mm
Anode Length: 63 mm
Material: Zinc
Shape: Spherical
EAN: 0628309103729ZSA200 Shaft Diameter: 51 mm (2")
Anode Diameter: 91 mm
Anode Length: 73 mm
Material: Zinc
Shape: Spherical
EAN: 0628309103743ZSA225 Shaft Diameter: 57 mm (2 1/4")
Anode Diameter: 108 mm
Anode Length: 95 mm
Material: Zinc
Shape: Spherical
EAN: 8720193084442
Construction and Dimensions
The MG Duff ZSA anodes feature rounded zinc bodies with dimensions corresponding to their specified shaft sizes. The range offers three configurations:
- ZSA150: External diameter of 70 mm and length of 63 mm, designed for a 38 mm (1 1/2") shaft.
- ZSA200: External diameter of 91 mm and length of 73 mm, designed for a 51 mm (2") shaft.
- ZSA225: External diameter of 108 mm and length of 95 mm, designed for a 57 mm (2 1/4") shaft.
The external body diameter and length should be considered when checking the available space around the propeller shaft.
Corrosion Protection
The zinc anodes act as sacrificial components, corroding preferentially to help protect electrically connected marine metal components against galvanic corrosion.
The ZSA range is intended for propeller shaft applications and provides three different sizes for selecting an anode according to the required shaft diameter.
Model Selection and Compatibility
When selecting a replacement anode, verify the following dimensions:
- Shaft Diameter: The anode must correspond to the diameter of the propeller shaft.
- External Anode Diameter: Check that sufficient installation space is available around the shaft.
- Anode Length: Verify the available axial space for the selected model.
The shaft diameter must not be confused with the external anode diameter. For example, the ZSA200 is designed for a 51 mm shaft but has an external body diameter of 91 mm.
Product Identification
Product Number EAN Code ZSA150 0628309103729 ZSA200 0628309103743 ZSA225 8720193084442
Sales Unit: 1 zinc spherical anode.
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