Designed for better machine balance and component life.
Suspended Undercarriage Design
Absorbs impact loads to reduce the shock loads transferred to the undercarriage by up to 50%.
Provides more ground contact, especially in hard, uneven terrain. Higher traction means less slippage, better balance, and a smoother ride.
Rollers and Idlers
Feature symmetric Duo-Cone™ seals. Idler caps have an additional third bolt in the abutment-style joint.
Tubular design resists bending and twisting and includes added reinforcement where operating loads are the highest. Alignment is optimized for undercarriage wear, and increased track frame adjustment length provides more wear material for use, extending link and roller wear life.
Transfers implement shock loads to the mainframe and allows the sprockets, final drives, axles and steering components to perform without absorbing excessive punishment. This allows Cat tractors to work harder and last longer than competitors’ machines. The sprocket segment design increases the life of both the segment and track bushing.
The elevated sprocket allows more track to the rear of the roller frame, increasing traction and flotation and counteracting front-end rise during heavy dozing and drawbar applications. With more track on the ground, the D9R delivers exceptional balance, stability, and traction for excellent dozer penetration and productive ripping.
Positive Pin Retention (PPR) Sealed and Lubricated Track
Designed for high-impact and high load applications. The PPR exclusive Caterpillar design locks the link to the pin reducing the opportunity for premature loss of lubrication. Sealed design permanently coats the track pin with lubricant, minimizing metal-to-metal contact and virtually eliminating internal pin and bushing wear.
- Large pivot shaft bushings operate in an oil reservoir.
- A low friction, no maintenance bushing is used in the saddle connection.
- Resilient pads restrain equalizer bar oscillation.
- Idler Guards (optional), increase undercarriage life.