Structures
325D structural components and undercarriage are the backbone of the machine’s durability.
Robotic Welding. Up to 95% of
the structural welds on a Caterpillar® Excavator are completed by robots. Robotic welds achieve over three times the penetration of manual welds.
Carbody Design and Track Roller Frames.
Main Frame. Rugged main frame is designed for maximum durability and efficient use of materials.
Undercarriage. Durable Cat® undercarriage absorbs stresses and provides excellent stability.
Swing Bearing. The swing bearing utilizes cross roller bearings versus the traditional ball bearing design.
The cross roller bearing design allows for more surface contact to absorb the stresses that are a result of the high swing torque that Cat offers. It provides exceptional machine stability and reduces machine pitching during boom down operation.
Rollers and Idlers. Sealed and lubricated track rollers, carrier rollers, and idlers provide excellent service life, to keep the machine in the field longer.
Long Undercarriage. The long (L) undercarriage maximizes stability and lift capacity. Two additional track links have been added to the 325D L. This long, wide, and sturdy undercarriage offers a very stable work platform.
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