Marine Rudder Stern Tube Bearing Equivalent To Thordon Bushing
Marine Rudder Bearing
Proven Performance in the FieldINDRON® self-lubricating bushings are extensively applied in marine rudder bearing and stern bearing systems on bulk carriers and working vessels. Proven through practical application, these bushings effectively replace traditional metal components in oil-lubricated ship systems. Specifically, the INDRON® bushings demonstrate outstanding performance as marine rudder bearings, offering enhanced durability and reduced maintenance needs.
When compared to other non-metallic rudder and stern bearings used in water-lubricated systems, INDRON® marine rudder bearings deliver a significantly longer service life. This not only improves the reliability of the marine rudder bearing system but also helps shipowners substantially lower operational and replacement costs.
Marine Rudder Bearing Material Grade & Performances
COMMON GUIDE BEARING MATERIALS
| Comparison of material performance of water-conductive bearings | INDRON TSTN | THORON SXL | |||
| Properties | Unit | Test Method | Typical Value | ||
| Physical Property | |||||
| Density | g/cm3 | ASTM D792-08 | 1.17 | 1.16 | |
| Mechanical Properties | |||||
| Tensile Strength | MPa | ASTM D638-08 | 40.3 | 44.0 | |
| Elongation at Break | % | ASTM D638-08 | 199 | 230 | |
| Tensile Modulus | MPa | ASTM D638-08 | 650 | 650 | |
| Shore A | ° | ASTM D2240-03 | — | — | |
| Shore D | ° | ASTM D2240-03 | 65 | 66 | |
| Water Absorption (24h) | % | ASTM D570-98 | 0.5 | 0.5 | |
| Water Absorption (Saturated) | % | ASTM D570-98 | 1.2 | 1.3 | |
| Impact Strength (Notched IZOD) | J/M | ASTM D256-06a | 660【P】 | 320 | |
| Compressive Strength(10%) | MPa | ASTM D695-08 | 23 | — | |
| Modulus Compression | MPa | ASTM D695-08 | 430 | 486 | |
| Permanent Skewness | % | ASTM D395-03 | — | — | |
| Maximum Operating Pressure (dynamic) | MPa | 10 | 10 | ||
| Maximum Operation Temperature (in water) | ℃ | 70 | 60 | ||
| Maximum Operation Temperature (Dry) | ℃ | 110 | 100 | ||
| Tribology Property | |||||
| DIN Abrasion (Dry) | mm3 | ASTM D5963-04 | 138 | 195 | |
| Extreme PV (Water Lubrication) | MPa·m/s | GB 7948-87 | 101.3 | — | |
| Extreme PV (Dry Friction) | MPa·m/s | GB 7948-87 | 1.69 | 1.02 | |
| Coefficient of Dynamic Friction (Water) | GB 7948-87 | 0.01-0.05 | 0.01-0.051 | ||
| Coefficient of Dynamic Friction (Dry) | ASTM D3702-94 | — | 0.05 | ||
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Who Is Techemer Factory?
Our company will take integrity, quality first, customer first and first-class service as its tenet.
| 01. Focus On Water Lubricated Bearings And Shaft Seals Since 2008 | 02. Offer Customized Bushes, Bearings And Seals Production |
| 03. Stabe Quality With Reasonable Price | 04. Fast Delivery With Online Service After Sale |
Certification
| ISO CERTIFICATE | CERTICATE OF WORKS APPROVAL | ||
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Why Choose INDRON® for Your Marine Rudder Bearing Needs
Our advantage lies in a strong team of senior material scientists and mechanical engineering experts who are at the forefront of international advancements in material design, innovation, manufacturing, and application. With years of industry experience and a customer-focused approach, we specialize in solving complex technical challenges and delivering high-performance material solutions—especially for critical applications like marine rudder bearing systems.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

