Logo -ul Tonkee Machinery
Lifetime lubrication: Pre-filled with high-performance lithium complex grease (NLGI 2) sealed in a permanently closed system, eliminating the need for periodic re-greasing.
Advanced sealing system: Double floating seals (high-chromium alloy, HRC 65–70) paired with FKM O-rings (resistant to -20°C to 200°C) to prevent oil leakage and block contaminants (dust, mud, water).
Smooth tread finish (Ra ≤ 0.8 μm) reduces friction between the roller and track chain, extending service life for both components.
Symmetrical flange design to guide the track chain and prevent lateral misalignment during operation.
Designed to handle the track tension and dynamic loads of the Komatsu PC200-7 (operating weight: ~20 tons), with a static load rating of 8–10 tons per roller.
