Milton CAT 320D L - Manual (Page 9)

Front Linkage Options. The Reach
Boom allows excellent all-around
versatility and a large working
envelope. It can be equipped with the
following three sticks:
• R3.9B1 – offers maximum reach
and digging depth
• R2.9B1 – performs well in a
mid-range working envelope
• R2.5B1 – a good match when the job
requires a larger bucket or a hammer
Mass Excavation Boom is designed
for heavy-duty, high production
earthmoving applications and has
a single system-matched stick
• M2.4CB2 – delivers significantly
higher digging forces and allows the
use of large buckets.
Super Long Reach Front – with reaches
up to 15.2 m (50 ft) this configuration
is designed for light duty applications
requiring an extra large working
envelope.
Linkage Pins. The bucket linkage pins
for the Mass Excavator configuration
have been enlarged to improve reliability
and durability. All the pins in the front
linkages have thick chrome plating,
giving them high wear and corrosion
resistance. Bucket Linkage. The power link improves
durability, increases machine-lifting
capability in key lifting positions and
with the integrated lift-eye it is easier
to use than compared to the previous
power link. The lift eye also gives you
the optimum lift performance. It allows
you to lower the load point, which
maximizes the use of the boom cylinders.
9
Booms, Sticks and Bucket Linkages
Built for Performance and long service life, Caterpillar ® booms and sticks are large, welded,
box-section structures with thick, multi-plate fabrications in high stress areas.