Forged roller shell with uniform grain structure to resist impact and deformation under the track’s tension.
Heat-treated components: Roller tread hardness HRC 50–58 (hardened layer depth: 4–8 mm) for wear resistance; shaft core hardness HRC 28–32 for toughness.
Double floating seals (high-chromium alloy, HRC 65–70) to prevent oil leakage and block contaminants (dust, mud, water) in harsh environments.
Nitrile rubber O-rings with temperature resistance (-40°C to 120°C) for reliable long-term sealing.