NORGLIDE® SM Bearings
When bonded to steel, NORGLIDE® S turns into NORGLIDE® SM. Material maintains sizing capability to a large extent with the capability of higher loads.
NORGLIDE® SM is a composite material of compounded PTFE, bronze stretched metal and steel backing. This material structure combines the bearing characteristics of PTFE compound tape with the sizing capabilities of stretched metal.
These bearings can also be designed without play. Bearings of 1 mm of wall thickness or greater can be produced with an interference fit in the housing. Various methods are available to protect the steel shell from corrosion.
The standard PTFE compound contains carbon and graphite. Special PTFE compounds are available on request. Fabricated parts include rolled bearing with or without an axial flange, deep-drawn bearing and die-cuts.
|Nominal thickness (mm)||Material Structure|
|CuSN 6 Stretched Metal Steel|
NORGLIDE® SM, Type SM100CG-3031-B
|Maximum permissible specific bearing load static
--Bearing load dynamic
|Coefficient of friction at RT
--On steel with ≥ 58 HRC
|@ 4.8 MPa and 0.058 m/s
@ 70 MPa and 0.0065 m/s
|Deformation under load||23ºC @ 100 N/mm 2, 1h||≤ 50||micron|
|Coefficient of heat transmission||SG PA 3022||2100||W/m2K|
|Operating temperature range||continuous
|-200 to +180
|Coefficient of linear thermal expansion||SG PA 1025||9||10-5/K|
|K Factor||0.24||10-6 mm3/ Nm|
|Volume resistivity||SG PA 1081||≤ 100||Ωcm2|
|Note: This is one example for this type of material design only. Some material properties are dependent from the used PTFE-Compound, the metal type and thickness.|