The drive wheel rim engages with the track links to transmit power while enduring track tension and ground impact loads. Its primary operational challenges are abrasive wear and cyclic loading.
Material:Manufactured as 42CrMo4/35CrMo forged rings with surface quenching Performance: Achieves 50-55 HRC surface hardness for superior wear resistance Maintains tough core properties to prevent impact-induced fractures
Category
Specification
Objective / Outcome
Material
42CrMo4 / 35CrMo forged rings
Provide high strength and durability
Primary Process
Surface quenching
Achieve high surface hardness
Surface Property
50-55 HRC hardness
Superior wear resistance
Core Property
Maintains toughness
Prevent impact-induced fractures
Advantages
Forged rims demonstrate 2-3x longer service life versus cast alternatives by eliminating porosity and achieving uniform grain flow. The hardened surface layer (3-5mm depth) resists spalling even under high-track tension (typically 15-25 kN/m in 20-ton class excavators).