Milton CAT 320E LRR - Manual (Page 8)

Structures & Undercarriage
Built to work in rugged environments
Frame
The 320E LRR features a solid foundation that’s built
to absorb the stresses of every day work. The main frame
utilizes high-tensile-strength steel and a one-piece swing table
to improve strength and reliability. The X-shaped carbody
is designed to resist bending and twisting forces. The upper
frame includes reinforced mountings to support the Roll-
Over Protective Structure (ROPS) cab; the lower frame
is reinforced to increase component durability.
Undercarriage
The undercarriage is built to support various work
applications. Precision-forged carrier rollers, press-fi t pin
master joints, and enhanced track shoe bolts improve
durability and reduce the risk of machine downtime and
the need and cost to replace components. Heavy-duty
rollers and idlers are sealed and lubricated to extend service
lift. Track links are assembled and sealed with grease to
decrease internal wear and increase life compared to dry seal
undercarriage. Also, a segmented two-piece guiding guard is
now offered to help maintain track alignment and improve
performance in multiple applications.
Counterweights
Two counterweight options are available: 6.2 mt (6.8 ton)
and 6.9 mt (7.6 ton). Integrated links enable easy removal of
the counterweight for maintenance or shipping.
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