Milton CAT 385C L - Manual (Page 10)

Carbody Design. The advanced carbody
design stands up to the toughest
applications.
• Modified X-shaped, box-section
carbody provides excellent
resistance to torsional bending.
• Upper structure weight and stresses
are distributed evenly across the full
length of the track roller frame.
• Robot welding ensures consistent,
high-quality welds throughout the
manufacturing process.
Upper Frame. Rugged main frame is
designed for maximum durability and
efficient use of materials.
• Robot welding for consistent,
high-quality welds.
• Outer frame utilizes curved side
rails, which are die-formed, for
excellent uniformity and strength
throughout the length.
• The main channels are box sections
connected by a large diameter tube
in the boom foot area to improve
rigidity and strength.
Track Roller Frames. The track roller
frame is made of thick steel plate that
is bent into a U-shape and welded to the
bottom plate to create a box structure.
The box structure design provides
increased rigidity and impact resistance.
Cross-roller Bearing. The 385C L
swing bearing is a cross roller type,
with greater contact area than ball type
bearings, for increased stability and
longer life.
Variable Gauge Undercarriage.
The long variable gauge undercarriage
is standard. The track roller frames are
bolted to the carbody, and can be placed
in two positions – wide, for a stable
base for operating, or a narrow gauge
for reduced shipping width.
10
Structures
The 385C L structural components are the backbone of the machine’s durability.