Description

The idler on a crawler crane undercarriage guides track travel to prevent track deflection and derailment. Keep the crawler crane moving in the correct direction. We supply premium, cost-effective Hitachi Sumitomo SCX550 idler ship globally with delivery in 7–10 working days upon order confirmation.

Technical Specifications about Hitachi Sumitomo SCX550 Idler

Part Name	Hitachi Sumitomo SCX550 Idler
Fit For	Hitachi Sumitomo SCX550 Crane
Brand	TP Track
Trade terms	EXW, FOB, CFR, CIF
HS Code	8431499900
Loading Ports	Qingdao / Yantai / Shanghai

Components of Hitachi Sumitomo SCX550 Idler

The wheel consists of five parts including wheel body, copper bushing, end cover, shaft and Floating oil seal system.

1 Wheel Body

The wheel body is integrally adopt high-strength 35SiMn alloy steel. This silicon-manganese alloy features excellent inherent strengthening properties, ideal for heavy-duty construction machinery undercarriage parts. Superior quality starts with raw materials 35SiMn.The material possesses multiple core advantages such as high strength, high toughness, and impact resistance. It perfectly adapts to the complex and harsh construction conditions of crawler cranes. After undergoing a professional heat treatment process, the overall hardness of the wheel body is uniformly enhanced, and the wear resistance of its surface layer is significantly strengthened. This enables it to effectively resist the continuous friction and scratching from gravel and sand, thus eliminating common issues such as rapid wear and deformation of the wheel body.

2 Copper Bushing

The shaft sleeve is forged from high-purity brass as a one-piece component, with no impure copper or inferior additives. Boasting superior self-lubricating properties, the brass forms a natural oil film during operation. Combined with the internal cavity lubricating grease, it effectively reduces dry friction against the main shaft. In addition, brass features high toughness and elasticity, allowing minor buffering deformation under stress and pressure to prevent fracture under heavy impact loads. It also delivers outstanding corrosion resistance to resist rust formation.

3 End Cover

We cast the large-sized guide wheel end cap from high-quality alloy steel, exhibiting outstanding toughness and impact resistance. It can withstand axial impacts and lateral squeezes caused by heavy-duty operations. It resists deformation and cracking, effectively protecting internal bearings and oil seals.

The small idler end cover is made of ductile iron, featuring good machinability of cast iron and high toughness of steel. This material delivers reliable sealing, paired with high-precision end face machining. It keeps sediment and sewage out of the cavity and prevents lubricant grease loss.

4 Shaft

The shaft uses same alloy steel as the wheel body. After heat treatment and surface quenching, it gains greatly improved toughness, strength and wear resistance.

5 Floating Oil Seal System

It adopts a high-grade floating oil seal system and imported O-rings. It features excellent sealing performance, blocking sediment ingress and lubricant leakage.