Milton CAT 320E L User Manual
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General Duty (GD)
GD buckets are for digging in low-impact, low-abrasion 
material such as dirt, loam, and mixed compositions 
of dirt and fi ne gravel. 
Heavy Duty (HD)
The most popular bucket style, HD buckets are a good 
starting point when digging conditions are not well known 
like a wide range of impact and abrasion conditions that 
include mixed dirt, clay, and rock. 
Severe Duty (SD)
SD buckets are for higher abrasion conditions such as 
well shot granite and caliche. Red area on bucket image 
illustrates additional protection against wear as compared 
to a GD bucket. 
Specialty Buckets
In addition to the standard four bucket categories, 
specialty bucket styles are available for the 320E, each 
with a different purpose: 
•
Ditch Cleaning buckets for cleaning ditches, slope 
grading, and other fi nish work. 
•
Center-Lock Pin Grabber Performance buckets for 
maximum digging performance while keeping the 
versatility and convenience of a coupler. 
•
Wide Tip buckets for low impact material where leaving 
a smoother floor and minimal spillage are necessary. 
1) General Duty 2) Heavy Duty 3) Severe Duty
Hydraulic Kits
Caterpillar offers field-installed hydraulic kits that are uniquely 
designed to integrate Cat Work Tool attachments with Cat 
Excavators. Hoses and tubes are pre-made, pre-shaped, and 
pre-painted to make installation quick and easy. 
Comprehensive Product Support
All Cat Work Tools are backed up by a world-wide network 
of well-stocked parts depots and highly experienced service 
and support personnel. 
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