Milton CAT D11T CD - Manual (Page 12)

Suspended Undercarriage Design.
Absorbs impact loads to reduce the shock
loads transferred to the undercarriage by
up to 50 percent in uneven terrain.
Bogie suspension conforms closely to
the ground. Providing up to 15 percent
more ground contact, especially in hard,
uneven terrain. Higher traction means
less slippage, better balance, and a
smoother ride.
Sprockets. Have five bolt-on replaceable
rim segments of abrasion resistant tough
steel for long wear life.
Equalizer Bar. End pin bearings are oil
lubricated from a remote reservoir for
easy maintenance and longer life.
Rollers and Idlers. Feature symmetric
Duo-Cone seals for long sealing life to
prevent oil loss and dirt entry. Toric rings
maintain performance over a wide range
of temperatures. Rollers and idlers are
serviceable and rebuildable to provide
value. Abutment-style caps securely
attach rollers and idlers to the bogies.
Integrated Carrier Roller Mount.
The carrier roller mount is cast into
the track roller frame making it easier
to add the optional carrier roller in
the field, if conditions require it.
Reinforced Roller Frames. Tubular design
resists bending and twisting, with added
reinforcement where operating loads
are highest.
• Roller frames attach to tractor by a
pivot shaft and pinned equalizer bar.
• Large pivot shaft bushings operate
in an oil reservoir.
• A low friction, no maintenance
bushing is used in the saddle
connection.
• Resilient pads restrain equalizer
bar oscillation.
• The recoil system is sealed and
lubricated.
• Patented alignment design increases
undercarriage wear life.
• Idler guards (optional) increase
undercarriage life in abrasive
applications.
• Track adjustment provided to
120 percent undercarriage wear limit.
Positive Pin Retention (PPR) Sealed and
Lubricated Track. Permanently coats
the track pin with a sealed-in lubricant,
minimizing metal-to-metal contact.
• Virtually eliminates internal pin
and bushing wear.
• Lubricant is held in a reservoir
in the track pin.
• Coated track bushing maximizes
sealability.
• Stronger track link resists high
impact loads.
• Positive pin retention mechanically
locks the link to the pin, resisting
end play and increasing joint stability.
Sprocket Segments. Made exclusively
of Caterpillar Tough Steel™ for longer
wear life and precision machined after
heat treat for proper fit. Segments can
be removed or replaced without
breaking the track.
Track Shoes. Track shoes are available
in a variety of sizes and styles to match
the working conditions.
12
Undercarriage
The Caterpillar elevated sprockets are designed for better machine balance and longer
component life.