Techemer - Water-Lubricated Bearings & Shaft Seals Manufacturer Since 2008
Techemer TSTN PUMP GUIDE BEARING/MARINE RUDDER BEARING/ MARINE STERNTUBE BEATING
Techemer TSTN is an advanced elastoplastic composite material engineered for high-performance water-lubricated bearing applications. The material matrix integrates durable self-lubricating microcrystals and extreme-pressure particles, forming a stable multi-phase composite structure.
This engineered composition provides an optimal balance between low friction and high wear resistance, ensuring consistent performance under demanding operating conditions.
This engineered composition provides an optimal balance between low friction and high wear resistance, ensuring consistent performance under demanding operating conditions.
Techemer TSTN elastoplastic alloy is an extremely ideal wear-resistant lubricating material, which shows a small volume wear both in dry friction and in medium liquid, and is more durable than other sliding bearing materials. TSTN supports reliable dry-start capability and performs effectively in environments where lubrication may be intermittent or insufficient. Its resistance to adhesive wear makes it particularly suitable for heavy-duty bearing systems subjected to high loads and cyclic stress.
With controlled deformation characteristics and excellent dimensional stability, TSTN helps protect the shaft surface while extending bearing service life.
With controlled deformation characteristics and excellent dimensional stability, TSTN helps protect the shaft surface while extending bearing service life.
Techemer TSTN bearing has excellent performance of self-liquid lubrication and wear resistance, which is widely suitable for guide bearings, thrust bearings, impeller rings, etc. of various water pumps. Yanlong® bearings can provide integrated, split, bearing bush, slat bearing bushes, centrifugal coating D and multi-layer PLYDX to meet the needs of various pump types.
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Key Advantages :
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TSTN Material Grade
| Material | TSTN | ||
| Properties | Unit | Test Method | Typical Value |
| Physical Property | |||
| Density | g/cm³ | GB/T 1033.1 /ISO 1183.1 | 1.16 |
| Mechanical Properties | |||
| Tensile Strength | MPa | GB/T 1040.2 /ISO 527.2 | 40.3 |
| Elongation at Break | % | GB/T 1040.2/ISO 527.2 | 300 |
| Shore Type D Hardness | ° | GB/T 2411/ISO 868 | 62~66 |
| Water Absorption Mass (Saturated) | % | GB/T 1690/ISO 1817 | 1.2 |
| Water Absorption Volume (1080h) | % | GB/ T1690/ISO 1817 | 1.4 |
| Charpy Impact Strength (Notched) | kJ/㎡ | GB/T 1043.1/ISO 179.1 | 110 |
| Compressive Strength | MPa | GB/T 1041/ISO 604 | 24.6 |
| Modulus of Compression | MPa | GB/T 1041/ISO 604 | 423 |
| Permanent Compression Set (24h) | % | GB/T 7759/ISO 815 | 25 |
| Maximum Load Capacity (Low-speed oscilating at 25% strain ) | MPa | 26 | |
| Maximum Load Capacity (continuous operation at 25% strain ) | MPa | 10 | |
| Maximum Operation Temperature (in water) | °C | 70 | |
| Maximum Operation Temperature (Dry) | °C | 110 | |
| Friction Properties | |||
| Relative Volume Wear (by Rotating Cylinder Drum) | mm³ | GB/T 25262/ISO 23794 | 138 |
| Limiting PV (Seawater Cycling, Linear Speed 5.13m/s) | MPa·m/s | GB 7948-87 | 101.3 |
| Limiting PV (Dry Friction, Linear Speed 5.13m/s) | MPa·m/s | GB 7948-87 | 1.69 |
| Coefficient of Dynamic Friction (Water) | GB 7948-87 | 0.08-0.16 | |
Applications
Techemer TSTN bearings are widely used in bulk carriers and working ships. It has been proved in practice that the product successfully replaced metal stern bearings and rudder bearings in ship oil lubrication systems. Compared with other non-metal stern bearings and rudder bearings in the water lubrication system, the product has a longer service life, which helps ship owners to save a great bunch of costs and increases the reliability of stern bearing and rudder bearing systems.
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