The TBM main bearing is the most costly and sensitive part of the TBM so it needs to be well protected. TBM main bearing grease effectively protects the TBM main bearings by preventing the ingress of soil, water or dust through the main bearing seals.
Normet’s main bearing sealing and lubricating greases are carefully designed for exactly this purpose.
TamGrease BS1 is a main bearing sealing grease (excluder grease) with excellent adhesion and cohesion properties to completely fill the labyrinth and prevent ingress of soil or water.
TamGrease BL11 and BL12 are EP2 grade bearing lubrication greases, combining good adhesion and cohesion properties with excellent lubrication properties. They are injected into the chambers created by the lip seals.
Main Bearing Sealing Grease for TBMs