- Supply TypeManufacturer, Exporter, Supplier
- Preferred Buyer Location All over the world
Top Roller/Upper Roller Best selected sealing and lifelong lubrication design enable our top roller to have longer working life and perfect performance. Heat Treatment Technical Data for BBY Top Roller: Top roller shell: • surface quenching HRC 54-60 • face hardening depth(bulldozer 5-7mm,excavator 4-5mm) • Corner hardening depth more than 1.5mm