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The PM312 is an efficient, highly maneuverable milling machine with a cutting width of 1225 mm (48.2 in) that performs controlled full-depth removal of asphalt and concrete pavements in a single pass.

Cat Specs

Cutting System

Milling Width
48.2 in
Maximum Milling Depth
13 in
Rotor Speeds
97 / 109 / 121 rpm
Number of Bits

Power Train

Rated Power
336.6 HP
Maximum Travel Speed
3.4 mile/h
Maximum Milling Speed
108 ft/min


Operating Weight
48429 lb
Transport Weight
44875 lb

Service Refill Capacities

Engine Oil
7.9 gal (US)
Hydraulic Tank
15.6 gal (US)
Water Spray System Tank
332.9 gal (US)
Cooling System
16.4 gal (US)
Fuel Tank
158.5 gal (US)
Diesel Exhaust Fluid (DEF) Tank
5.8 gal (US)


Operating Length - Conveyor Up
36.45 ft
Height - Canopy
12.3 ft
Maximum Truck Clearance
15.42 ft
Minimum Right Cutting Radius
6.3 ft
Minimum Left Cutting Radius
13.58 ft
Conveyor Swing
60 degrees from center
Transport Length
30.58 ft
Transport Height
9.84 ft
Transport Width
8.33 in
Operating Width
8.33 ft