- SLFE 3002
HIGH-TEMPERATURE PLAIN BEARINGS
Iron-nickel sintered metal – maintenance-free
MATERIAL CHARACTERISTICS
The base of the metallic matrix is iron powder with the addition of nickel, copper and molybdenum to improve heat and scale resistance.
Solid lubricant (99.9% high-purity, chemically neutral electro graphite) is additionally incorporated, embedded under pre-stress in micro-fine distribution.
The alloy, produced using the company’s proprietary process, enables rapid self-lubricating function by building up a firmly adhering graphite film from the alloy on the mating surface.
OPERATING DATA
| Temperature range | 0 to +600 °C (under protective gas atmosphere or vacuum up to 850 °C) | |
| max. PV value | 1 MPa m/s | |
| max. sliding speed | 0,4 m/s | |
| max. surface pressure | stat. 100 MPa – dyn. 50 MPa | |
| Thermal expansion | 12,8 x 10-6 °C-1 | |
| Solid lubricant | 6% Graphite | |
| Coefficients of friction: | ||
| Dry | μ = 0,1 | bis 0,15 |
| In grease / oil | μ = 0,06 | bis 0,15 |
FOR BEARING DESIGNFOR BEARING DESIGN
Recommended minimum wall thickness a: (d = Ø bearing bore)
| a = √ (d ⋅ 0,5) | up to 10 N/mm² |
| a = √ (d ⋅ 0,6) | above 10 bis 25 N/mm² |
| a = √ (d ⋅ 0,8) | above 25 N/mm² |
Recommended fit for the plain bearing and mating components
| Shaft | h7 |
| Housing bore | H7 |
| Plain bearing bore | C7 (results in approx. D8 after installation) |
| Plain bearing outer diameter | r6 |
At plain bearing temperatures above 80 °C, thermal expansion must be taken into account.
MATING MATERIAL
| Surface roughness | Ra = 0,2 μm bis 0,8 μm | |||
| Minimum hardness | > 180 HB recommended hardness > 45HRC |
To achieve optimal sliding and wear properties, a heat-resistant, scale-free engineering steel with a surface hardness of at least 45 HRC (cold condition) should be used.
PRODUCT DESCRIPTION: TECHNICAL PROPERTIES AND AVAILABLE MATERIALS
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GLP Flat Wear Plate – Brass with lubricating pins
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SLB Cylindrical Plain Bearings – Brass with lubricating pins
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SLSM-F Sintered Flanged Bearing – Sintered Bronze with Graphite
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Zu den Sandbeeten 11
35043 Marburg Deutschland
Tel.: +49 (0) 6421 94860 – 0
Fax: +49 (0) 6421 94860 – 20