Undercarriage Parts

Cat Undercarriage Parts for Sale

Undercarriage partsDoes your business rely on bulldozers, compact track loaders, skid steers and other equipment to navigate rugged terrain? The undercarriage is the supporting framework underneath the machine that bears the brunt of the impact.

Undercarriages take a beating, which can cause excessive wear and possible damage. At some point, you’ll likely need to replace this essential component or the parts that comprise it to ensure your machine’s performance meets your expectations. Updating the undercarriage can extend the equipment’s life span, improving your return on investment.

Construction companies and other businesses that use equipment in Middle Tennessee, West Tennessee and North Mississippi can count on Thompson Machinery to supply high-quality undercarriage assemblies and components for their Cat® products. We’ve been helping businesses like yours meet all their heavy equipment needs since 1944.

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Our Cat® Undercarriage Solutions

Thompson Machinery is the region’s exclusive Cat equipment dealer. As a fourth-generation family-owned business, we strive to deliver superior products backed by reliable support and service.

Our extensive lineup of Cat undercarriage products can meet your requirements for various applications.

Common Undercarriage Parts

Every undercarriage requires an assortment of high-quality parts and components to ensure it functions properly and withstands the rigors of day-to-day use. Thompson Machinery carries an extensive selection of these essential components:

  • Chains
  • Guards
  • Hubs
  • Idlers
  • Sprockets
  • Gears
  • Caps
  • Guiding guards
  • Bolts
  • Rollers
  • Shafts
  • Rings
  • Wear strips
  • Shoes
  • O-rings
  • Bushings

General Duty

These undercarriages provide excellent results for medium-sized machines performing less-demanding job site tasks. General-duty components will provide sufficient equipment protection while minimizing your parts costs. Available products include seals, bushings, tracks, track rollers and end collars.

Heavy Duty

A heavy-duty track meets the undercarriage requirements of medium-sized machines with elevated sprockets. This equipment offers improved shock resistance, making it ideal for more challenging work environments. Typical applications include logging and reforestation projects, side-sloping work and navigating rocky conditions and uneven terrain requiring wider track shoes.

Examples of specific parts and components include heavy-duty track link assemblies that support the machine’s weight and offer a location for a shoe attachment. You can also purchase a track shoe master that provides traction, flotation and protection for the link assembly.

Sealed and Lubricated Track

A Cat Sealed and Lubricated Track (SALT) performs the essential function of sealing lubricant into the undercarriage system for small- and medium-sized Cat equipment. It also prevents damage from abrasives and minimizes internal pin and bushing wear. You’ll experience less equipment downtime, lower maintenance costs and longer equipment service life.

The universal SALT undercarriage configuration provides easy adaptability to various underfoot conditions based on your equipment model and operating environment.

Enhanced Sealed and Lubricated Track

An upgraded SALT undercarriage provides unparalleled performance and endurance. The tall link design offers extended wear life, and the pin retention feature improves sealability. Combining the enhanced SALT with Cat sprockets and shoes ensures a superior undercarriage system balance and reduces short- and long-term operating and ownership costs.

Rubber Undercarriage

Do you use compact Cat equipment? These undercarriages will increase performance in a wide range of operating environments.

Installing a rubber undercarriage on a multi-terrain loader (MTL) enables you to experience higher flotation and lower ground pressure for enhanced stability and a smoother ride. It also improves traction control when operating a compact track loader (CTL).

Several track belts are available to provide a custom solution:

  • General duty
  • Standard
  • Narrow width
  • Wide width
  • Smooth tread
  • Polar tread


Caterpillar engineered and manufactured the SystemOne™ undercarriage to handle the most challenging environments and extreme operating conditions. The innovative design prevents link scalping and reduces bushing turns, resulting in fewer maintenance requirements and an extended service life. The advanced link roller system offers a life span that is up to 50% longer than a conventional undercarriage system.

Sleeve Bearing Track

The patented sleeve bearing track (SBT) features a hardened steel sleeve bearing that provides extended track life. The SBT can operate at higher speeds and accommodate heavier loads, enabling you to complete more work in less time.

Why Partner With Thompson Machinery for Undercarriages?

At Thompson Machinery, we make it easy to get the undercarriage systems and components you need to keep your equipment on the job and productive. Order your parts 24 hours a day at Parts.Cat.Com, our user-friendly online portal that provides immediate access to more than 1.4 million Cat products. You can also arrange to pick your order up at the store or one of the drop box locations across our territory.

Order your undercarriage today. You can also call us at 800-228-3644 or contact us online if you have questions or need assistance.

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