Milton CAT 312E - Manual (Page 7)

Front Linkage
Made for high stress and long service life
Booms and Sticks
The 312E is offered with a reach boom and three stick configurations: R2.5 m (8'2"), R2.8 m (9'2"), and R3.0 m (9'10").
Also, a new thumb-ready stick with factory brackets and structural reinforcement to attach a Cat hydraulic thumb to the
machine is an available option. Each boom and stick is built with internal baffle plates for added durability, and each undergoes
ultrasound inspection to ensure weld quality and reliability.
Reach configuration balances digging force and bucket capacity. It covers all applications this size of machine was designed
to take on such as digging, loading, trenching, and working with hydraulic tools.
Large box-section structures with thick, multi-plate fabrications, castings, and forgings are used in high-stress areas such as the
boom nose, boom foot, boom cylinder, and stick foot to improve durability. Also, the front linkage pins’ inner bearing surfaces
are welded with a self-lubricated bearing used to extend service intervals and increase uptime.
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