here’s how it works Step 5 The conveyor can swing up to 60 degrees of center to fill trucks as the PM800 series cold planer travels the cutting path.
Step 1 The operator drives forward at a speed of up to 328 feet per minute.
Step 2
Step 3
The rotor turns at a speed of 100, 109, or 118 rpms, depending on the machine model.
A rotor chamber water spray system, fed from the 898-gallon onboard water tank, cools the rotor and keeps dust down.
Step 4 When the cold planer approaches an obstacle in the cutting path, the operator uses the “obstacle jump” feature to clear it.
Caterpillar’s PM800 Series Cold Planers Caterpillar Inc., Peoria, Illinois, introduced its PM800 series cold planers to offer efficient performance and high production with three milling widths to customize your machine. The PM820’s milling width is 79.1 inches with 178 bits; the PM822’s milling width is 88 inches with 185 bits; and the PM825’s milling width is 98.6 inches with 203 bits. Here’s how they work: The machines operate at a speed of 328 feet per minute down the lane to be milled, cutting at a maximum depth of 13 inches. To cool the rotors, which feature speeds of 100, 109 and 118 rpm respectively, the onboard water tank holds 898.2 gallons, features a side water fill valve and rotor chamber water spray system.
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As the cold planer travels forward, the 27.49-foot conveyor can swing +/- 60 degrees from center to fill the truck, which can travel in the adjoining lane if necessary. When coming up to an obstacle in the cutting path, such as a manhole cover, the operator uses the “obstacle jump” feature to clear the obstruction. When coming to the end of the lane—or when starting the job— the operator can set and automate grade and slope transition for the tapered end cut over a specified distance with “automated cut transition.” He saves the input to recall it for the next day. Additional automated tasks such as plunge-cut capability and 3D milling controls are designed to make the operator’s job easy. When it’s time for maintenance,
the tapered, dual-retention design of the Cat System K rotor secures the toolholders to the rotor without retaining pins, bolts or setscrews, which saves times when replacing bits. For more information, contact your local CAT dealer.
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