Techemer - Water-Lubricated Bearings & Shaft Seals Manufacturer Since 2008 — ISO-Certified | Fully Patented
INDRON®PLYHRBR – Rough Material for Pump Marine Bearing Bushing
INDRON® PlyhRBR is a high-performance composite material made of an elastoplastic polymeralloy (referred to as elastoplastic alloy). lt features several key characteristics and advantages.
The yellow layer is hard material, while the black layer is soft material. The black material is more wear resistant in the river with lot of sediment. But it is difficult to do freezing or interface installation for the black material due to low hardness. Therefore we need to use the yellow layer as well so that the black layer can be installed sturdily in the bushing.
The yellow layer is the casing support layer, providing structural support for the black wear-resistant layer. Without the yellow layer, the black layer alone cannot be directly frozen or interference fitted, making the yellow casing layer essential.
Key Advantages :
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Material Grade
| Material | PLYhRBR | ||
| Properties | Unit | Test Method | Typical Value |
| Physical Property | |||
| Density | g/cm³ | GB/T 1033.1 /ISO 1183.1 | 1.1 |
| Mechanical Properties | |||
| Tensile Strength | MPa | GB/T 1040.2 /ISO 527.2 | 20.3 |
| Elongation at Break | % | GB/T 1040.2/ISO 527.2 | 421 |
| Shore Type D Hardness | ° | GB/T 2411/ISO 868 | 33~40 |
| Water Absorption Mass (Saturated) | % | GB/T 1690/ISO 1817 | 1.2 |
| Water Absorption Volume (1080h) | % | GB/ T1690/ISO 1817 | 1.7 |
| Compressive Strength | MPa | GB/T 1041/ISO 604 | 3.8 |
| Modulus of Compression | MPa | GB/T 1041/ISO 604 | 60 |
| Permanent Compression Set (24h) | % | GB/T 7759/ISO 815 | 13 |
| Maximum Load Capacity (Low-speed oscilating at 25% strain ) | MPa | 5 | |
| Maximum Load Capacity (continuous operation at 25% strain ) | MPa | 3 | |
| 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 | 84 |
| Limiting PV (Dry Friction, Linear Speed 5.13m/s) | MPa·m/s | GB 7948-87 | 1 |
| Coefficient of Dynamic Friction (Water) | GB 7948-87 | 0.08-0.16 | |
Recommended Applications
Suitable for water pumps with high sediment levels, guide bearings in hydropower stations, dredging equipment in ports, ship propulsion systems, and water-lubricated transport devices in metallurgy and mining industries
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