Maintenance-free bearing with steel backing
| NORGLIDE® SMTL is a composite material of compounded PTFE, bronze stretched metal and steel backing. In contrast to NORGLIDE® SM, the bronze stretched metal in NORGLIDE® SMTL is separately precompressed and the PTFE compound tape is thinner, which improves load capabilities while reducing tolerance compensation compared to NORGLIDE® SM. Bearings of 0.75 mm of wall thickness or bigger can be produced with an interference fit in the housing. Various methods are available to protect the steel shell from corrosion.
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.
Availability
The standard PTFE compound contains either EKONOL® graphite or carbon and graphite. Special PTFE compounds are available on request. Fabricated parts include die-cuts, rolled cylinders, flanged cylinders and deep-drawn bearings.
|
NORGLIDE® SMTL
Standard Thickness Table
|
| Nom Thickness (mm) |
Material Structure |
CuSn 6 / Stretched Metal
Steel Backing |
| 0.50 |
|
| 0.75 |
|
| 1.00 |
|
|
NORGLIDE® SMTL
Application Related Characteristics
|
|
Material Properties
|
SG Test Procedure
|
Units
|
Value
|
| Maximum permissible specific bearing load at RT |
SG PL 0044 |
N/mm2
|
240 to 300 |
| Coefficient of friction at RT on steel with ³ 58 HRC |
|
|
|
| @ 4.8 N/mm2 and 0.058 m/s |
SG PL 0003 |
|
0.15 |
| @ 70 N/mm2 and 0.0065 m/s |
SG PL 0003 |
|
0.10 |
| Deformation under load (23°C @ 100 N/mm2
, 1h |
SG PL 0015 |
µm |
≤ 15 |
| Maximum continuous operating temperature |
|
°C |
180 |
| K Factor at RT on steel with ≥ 58 HRC |
SG PL 0003 |
10-6 mm3/Nm |
0.10 |
| The above mentioned performance values were measured in laboratory tests. They must not be considered as a specification for design. |
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