Main bearings

Built to withstand huge loads as cutter heads bore into solid rock

SKF main bearings are heavy-duty, roller-based bearings designed to carry all cutter head loads and transfer them to the rear. SKF main bearings include gear and bolting and are specifically application-engineered and optimized to meet application-specific demands. The internal bearing design is critical and has been designed and manufactured to achieve the high level of accuracy and performance required. Although bearing designs sizes vary, SKF produces 8 m and larger for the world's largest tunnel boring machines.
  • Application-optimized solution
  • Fully integrated seal
  • Robust bearing design
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