For lubricated bearings.
Bear Brand TUFNOL is a cotton fabric grade specially formulated for use as a lubricated bearing material. It has enhanced wearing properties and dimensional stability and gives excellent performance in a multitude of bearing applications, using water as a lubricant, or more conventional oils or greases. The low water absorption properties allow reduced clearances in bearings and also provide enhanced electrical insulation properties.
What is Bear Brand used for?
Bear Brand is used for a wide range of wearing and bearing applications, such as oil or grease lubricated bearings, slideways, water lubricated marine bearings, pump sleeve bearings, seal rings, mixer bearings, slipper pads, rolling mill bearings, guide bushes and a wide variety of components which are lubricated by the water-based process fluids in which they operate.
Standards
Sheet: Since the withdrawal of BS 2572, no British Standards or other national standards are applicable to Bear Brand Tufnol. This grade is therefore now manufactured to in-house quality specifications of Tufnol Composites Ltd, based on the former BS 2572 Type F2/1.
Rod From Sheet: MS 8029 Issue 01
Rectangular Bar: BS 6128 Part 4 Type PF CC 44
Hexagon Bar: BS 6128 Part 6 Type PF CC 64
Round Tube: BS EN 61212-3-2 Type PF CC 32
Rectangular Tube: BS 6128 Part 13 Type PF CC 133
| Original Document | Technical Datasheet(English) | |||
| Appearance | SheetRodpipeNatural Color | |||
| Reinforced | Cotton fabric | |||
| Physical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
|---|---|---|---|
Density/Specific Gravity | *** g/cm³ | Internal | |
Water Absorption | *** mg | - | 12mm thk. |
Water Absorption | *** mg | - | 3mm thk. |
Water Absorption | *** mg | - | 6mm thk. |
| Mechanical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Tensile Strength | |||
- | *** Mpa | Internal | |
Young’s modulus | *** Mpa | Internal | |
Shear Strength | *** Mpa | Internal | flatwise |
Compressive Strength | *** Mpa | Internal | edgewise |
Compressive Strength | *** Mpa | Internal | flatwise |
Cross breaking strength | *** Mpa | Internal | |
| Impact | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Charpy Notched Impact Strengh | |||
- | *** kJ/m² | Internal | |
| Thermal | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Specific Heat | *** J/kg-K | - | |
Coefficient of Linear Thermal Expansion | |||
- | *** E-6/K | Internal | in plane of laminae |
Thermal Conductivity | *** W/(m K) | - | through laminae |
Continuous Use Temperature | |||
Long term | *** °C | Internal | |
Temperature at Short Circle Operation | *** °C | Internal | |
| Electrical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Dielectric Constant(Permittivity) | |||
1MHz | *** - | Internal | |
Dissipation Factor | |||
1MHz | *** E-4 | Internal | |
Dielectric Strength | *** kV/mm | Internal | 3mm thk. flatwise in oil at 90°C |
Dielectric Strength | *** kV/mm | Internal | 6mm thk. flatwise in oil at 90°C |
Dielectric Strength | *** kV/mm | Internal | edgewise in oil at 90°C |
Insulation Resistance | *** Ohm | Internal | immersion in water |
The information presented on this datasheet was acquired by AjiEng.com from the producer of the material. AjiEng.com makes substantial efforts to assure the accuracy of this data. However, AjiEng.com assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.
