Description

As a key undercarriage part, Sumitomo SCX2500 bottom roller bears the unit weight and reduces ground pressure. It is one of the most important parts in a crawler crane.

Specifications of Sumitomo SCX2500 Bottom Roller

Components Of Sumitomo SCX2500 Track Roller

Wheel Body

The wheel body serves as the core component of bottom rollers. This bottom roller fits the 250-ton Sumitomo SCX2500 model. Adopt 42CrMo alloy steel, the wheel body boasts outstanding toughness and hardness. Combining tempering and surface quenching heat treatment greatly enhances its overall wear resistance. It delivers stable, long-duration continuous operation even under complicated and severe construction environments.

Copper Bushing

Bottom roller bushings are crafted from 100% pure copper. The copper bushing primarily buffers sliding friction between the wheel body and shaft during operation. Pure copper features superior thermal conductivity to rapidly dissipate friction-generated heat. Meanwhile, the material possesses excellent toughness and resists cracking under heavy loads and bumpy working conditions. Furthermore, pure copper offers remarkable rust and corrosion resistance, acting as a critical component that prolongs the overall service life of lower rollers.

Shaft

The shaft adopts the same 42CrMo alloy steel as the wheel body, featuring ample toughness and consistent wear resistance, ideal for long-term continuous load-bearing travel.

End Cover

Lower roller end covers are manufactured via ductile iron forming technology. Optimizations to the material’s internal metallographic structure elevate overall impact resistance. The covers are not prone to fracture or damage upon contact with crushed rock or heavy loads.

Oil Seal System

The complete sealing system carries imported O-rings and high-grade floating oil seals as its core matching components. The system effectively blocks mud ingress and stops grease leakage, maintains steady oil-film lubrication for friction pairs over extended periods, cuts abnormal abrasion, and extends the service life of components.