MasterRoc® BSG 11 — Main Bearing Sealing Grease (Excluder Grease) for Tunnel Boring Machines (TBM)

Formerly MEYCO BSG 11

What is MasterRoc BSG 11?

MasterRoc BSG 11 is an excluder grease for tunnel boring machines. It effectively protects the main bearing and prevents soil, water or dust ingress into the main bearing sealing. It is formulated to resist high water and ground pressures, and has excellent lubrication and pumping properties as well as excellent adhesion to all surfaces.

Features and benefits

  • Excellent sealing and anti-washout properties
  • Excellent adhesion to any metal or concrete surfaces
  • Excellent pumping and lubricating properties especially at very low or very high temperatures


MasterRoc BSG 11: Technical Data Sheet (December 2015)

pdf (164.65 Kb)