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SIM Lines (Lubrication-free systems)

SIM Lines (Lubrication-free systems)

Systems Exempt from Lubrication - Bushings in Bronze

The Grafimec bearings of Line SIM are exempt from oil and have solid permanent lubrication, they are ideal for critical combinations of load/speed and extremes of temperature, ensuring better conditions of sliding through the formation of permanent film that occurs right when starts the movement between a compound and the bearing.

SIM-M

The powder metallurgy allows the manufacture of a wide range of standard or special shaped mechanical components. This range is manufactured according to the ASTM B 438 Class II Type 1 regulations and comprises bronze alloys with tin or lead. The porous microstructure, typical of the sintering process, allows pervasion with several types of lubricating oils, making bearings self-lubricating.

The ASMT B 438 alloy typical composition is: 90.5% Cu and 9.5% Sn

 
Technical Specifications
UNS / DIN B438 Gr II TIP I
Tensile Strength N / mm² 45
Resistance Limit N / mm² - o -
Compressive Strength N / mm² 60
BRINELL HARDNESS 35
Charge Spec. Maximum N / mm² 20
PV Maximum N / mm².m / s 1.2
Maximum Temperature 100
* Maximum Peripheral Speed m / s 2.0
** Friction coefficient 0.015
Typical Applications and Performance Applications of low loads and moderate speeds. Does not support crashes

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