SLNI 3001 - Sintered Nickel Plain Bearing

Nickel-Sintered Metal - maintenance-free

SLNI 3001 - Sintered Nickel Plain Bearing

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:

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%)