TAB® Caterpillar Undercarriage Part CAT345 Idler

CAT345 Idler Overview

The TAB® CAT345 Idler is a high-performance undercarriage component engineered for heavy-duty Caterpillar excavators. Built to endure extreme digging, loading, and terrain conditions, this precision-engineered idler roller (link) provides optimal track tension, smooth motion, and reduced vibration. Its forged alloy steel body undergoes advanced heat treatment to resist wear, deformation, and cracking, ensuring long service life even in harsh working environments.

Key Features and Performance

The TAB® CAT345 Idler stands out for its superior craftsmanship and reliability. Designed with modern manufacturing technology, it guarantees precise alignment and consistent ground contact—critical for maintaining excavator stability and extending the lifespan of your track assembly.

Performance advantages:

• High-strength steel core with wear-resistant surface treatment

• Advanced sealing system to protect internal bearings

• Optimized geometry for smoother operation and less noise

• Excellent load distribution to prevent track misalignment

Each unit is tested under simulated heavy-load conditions to meet or exceed OEM performance standards, making it the preferred choice for large-scale construction and mining projects.

Applications and Industry Value

This idler is suitable for Caterpillar CAT345 excavators used in industries such as construction, quarrying, road building, and material handling. Its precision design enhances the undercarriage system’s overall performance, ensuring reliability in continuous, high-impact operations.
As a trusted undercarriage part supplier, Tianzhong Machinery provides robust, cost-effective, and durable undercarriage solutions to global OEMs and aftermarket distributors. We focus on providing our partners with consistent quality and professional technical support to maximize equipment uptime and productivity.

Why Choose TAB®

TAB® is dedicated to excellence in design, material innovation, and precision machining. With decades of experience in producing undercarriage components for world-class machinery, we ensure every idler delivers outstanding value, durability, and compatibility. Whether you need standard parts or customized solutions, TAB® is your trusted partner for long-term cooperation and dependable performance.