SLNI 3001 - Sintered Nickel Plain Bearing
Nickel-Sintered Metal - maintenance-free
Material - Characteristics
Sintered metal material consisting of highly pure nickel with an additive of graphite, (99,9% pure, chemical neutral electro- graphite), which is enclosed pre-loaded in micro distribution.
As result, a very high corrosion resistance of the material can be achieved.
The alloy makes a quick, self-lubricating performance possible through the building-up of a firmly adhering graphite film on the mating material.
It should be noted that this higly pure nickel alloy should only be used in conjunction with liquid media if possible.
Application Data
| temperature range | -150 up to +450 °C |
| max. PV value | 1 MPa m/s |
| max. sliding velocity | 0,4 m/s |
| max. surface pressure | stat. 100 MPa – dyn. 50 MPa |
| thermal expansion | 15 x 10-6 °C-1 |
| solid lubricant | 7% Graphite |
frictional coefficient:
| in water | μ = 0,08 | up to 0,12 |
For Bearing Design
Recommended minimum wall thickness a: (d = Ø bearing hole)
| a = √ (d ⋅ 0,5) | up to 10 N/mm² |
| a = √ (d ⋅ 0,6) | orver 10 to 25 N/mm² |
| a = √ (d ⋅ 0,8) | over 25 N/mm² |
Recommended fittings for the plain bearing and the sliding counterparts
| shaft | h7 |
| housing | H7 |
| bearing inner diameter | C7 (decreases down to D8 after pressed-in) |
| bearing outer diameter | r6 |
Thermal expansion has to be taken into account at bearing temperatures above 80 °C.
Mating Material
| surface roughness | Ra = 0,2 μm up to 0,8 μm |
| minimum hardness | > 150 HB
recommended hardness > 45HRC |
| Attention: | the counterpart should contain only few amounts of nickel (amount of Ni < 10%) |
