Our customized marine bearings are engineered for diverse and demanding operating conditions, providing outstanding wear and corrosion resistance. Using advanced water-lubricated technology, these bearings are oilless, self-lubricating, and maintenance-free-perfectly suited for seawater and muddy water environments.
With high load capacity and extended service life, they ensure long-term reliability for propeller shafts, rudder stocks, stern tubes, and other critical marine components.
Designed as a highly cost-effective and performance-matching alternative to THORDON SXL, our bushings deliver equivalent durability, lubrication efficiency, and environmental adaptability-at significantly lower cost.
Based on specific customer requirements and working conditions, we offer optimized bushing material solutions. All products are ISO certified, making them a trusted choice for shipbuilding, marine retrofits, and offshore engineering applications.
INDRON® Material Grade
| Bearing(lining) |
INDRON® TSTN |
INDRON® HRBR |
INDRON® HAWF |
INDRON® UNIV |
INDRON® PLAT |
| Material |
Synthetic Engineering Elastomers |
Synthetic Engineering Elastomers |
SyntheticEngineering Elastomers |
Synthetic Engineering Elastomers |
Synthetic Engineering Elastomers |
| Recommended |
|
|
|
|
| Workplace |
Guide Bearings & Seals |
Guide Bearings& Seals |
Guide Bearings & Seals |
Guide van, connecting rod bushing |
Guide vane, connecting rod bushing |
| Temperature Limit |
70ºC |
70ºC |
70ºC |
70ºC |
70ºC |
| Dry Rub |
Yes |
low speed |
low speed |
Yes |
Yes |
| Acid Resistance |
limit |
limit |
limit |
limit |
limit |
| Alkaline Resistant |
limit |
limit |
limit |
limit |
limit |
| Hydrocarbon Suitability |
Yes |
Yes |
Yes |
Yes |
Yes |
| Abrasion Resistance |
good |
excellent |
excellent |
good |
good |
| Friction Pair(bushing) |
bronze |
HRC40 |
HRC40 |
HRC40 |
HRC40 |
| |
Stainless |
recommend |
recommend |
recommend |
recommend |
| Typical Application |
water, sea water |
water, sea water |
water, sea water |
water, sea water |
water, sea water |
| |
Most fluids(pH 5-10) |
Most fluids(pH5-10) |
Most fluids(pH5-10) |
Most fluids(pH 5-10) |
Most fluids(pH5-10) |
| Note |
Lowest coefficient of friction,suitable for dry running applications, good wear resistance |
Use silt water under moderate grinding conditions |
Use ofsilt-containing water under high grinding conditions. Contains abrasion resistant |
high load capacity |
high load capacity |
Property List of INDRON® Elastic-plastic Alloy
| |
TSTN |
CFlon |
PLAT |
hRBR |
| Properties |
Unit |
Test Method |
Typical Value |
| Physical Property |
| Density |
g/cm3 |
GB/T 1033.1 /ISO 1183.1 |
1.16 |
2.05 |
1.23 |
1.1 |
| Mechanical Properties |
| Tensile Strength |
MPa |
GB/T 1040.2 /ISO 527.2 |
40.3 |
22.9 |
30 |
20.3 |
| Elongation at Break |
% |
GB/T 1040.2/ISO 527.2 |
300 |
560 |
150 |
421 |
| Shore Hardness |
° |
GB/T 2411/ISO 868 |
62~66D |
68D |
67~76D |
85~95A |
| Water Absorption Mass (Saturated) |
% |
GB/T 1690/ISO 1817 |
1.2 |
1.2 |
1 |
1.2 |
| Water Absorption Volume (1080h) |
% |
GB/ T1690/ISO 1817 |
1.4 |
1.4 |
0.9 |
1.7 |
| Charpy Impact Strength (Notched) |
kJ/m2 |
GB/T 1043.1/ISO 179.1 |
110 |
100 |
120 |
- |
| Compressive Strength |
MPa |
GB/T 1041/ISO 604 |
24.6 |
28.8 |
38 |
3.8 |
| Modulus Compression |
MPa |
GB/T 1041/ISO 604 |
423 |
828 |
600 |
60 |
| Compressive Set (24h) |
% |
GB/T 7759/ISO 815 |
25 |
- |
- |
13 |
| Maximum Load Capacity (Low-speed oscilating at 25% strain ) |
MPa |
|
26 |
25 |
38 |
5 |
| Maximum Load Capacity (continuous operation at 25% strain ) |
MPa |
|
10 |
10 |
20 |
3 |
| Maximum Operation Temperature (in water) |
°C |
|
70 |
100 |
70 |
70 |
| Maximum Operation Temperature (Dry) |
°C |
|
110 |
260 |
110 |
110 |
| Tribology Property |
| Relative Volume Wear (by Rotating Cylinder Drum) |
mm³ |
GB/T 25262/ISO 23794 |
138 |
200 |
136 |
84 |
| Limiting PV (Seawater Cycling, Linear Speed 5.13m/s) |
MPa·m/s |
GB 7948-87 |
101.3 |
- |
- |
- |
| Limiting PV (Dry Frition, Linear Speed 5.13m/s) |
MPa·m/s |
GB 7948-87 |
1.69 |
- |
2.3 |
1 |
| Coefficient of Dynamic Friction (Water) |
|
GB 7948-87 |
0.08-0.16 |
0.05-0.15 |
0.08-0.16 |
0.08-0.16 |
| |
INDRON® elastoplastic alloy exhibits less wear than other common non-metallic bearing materials under the same conditions. It is an excellent alternative to Thordon SXL, offering longer service life, higher reliability, and lower maintenance costs. Indron® bearings are certified by the China Classification Society (CCS) and are more durable than conventional bearing materials under various conditions, including dry friction, water lubrication (clean water or water with sand and mud), non-lubrication, grease lubrication, and impact loads.
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