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printer-friendly FAQs - Roto-Cut® Rotary Asphalt Cutters The following FAQs apply to our Roto-Cut® Rotary Asphalt Cutter products, for other categories please click here. On what size machines can rotary asphalt cutters be used? Asphalt cutter attachments need carrier weight to produce down force.  Motor graders shall be in the 15,000 lb. class or larger.  Rubber tire backhoe loaders need to weigh 9,000 lbs. or more.  Trenchers do not provide enough down force.  Use Allied's online Attachment Selection Wizard  to identify Roto-Cut models available for selected carriers.   How fast can I cut through three-inch thick asphalt? Travel speed is dependent on carrier size.  Productivity up to 6,000 linear feet per hour is possible.   How straight can I cut? Just as straight as you can drive the grader or loader.  Roto-Cut asphalt cutter attachments deliver straight, smooth cuts and are as easy to control as a concrete cutting saw. How warm does it have to be to cut asphalt? The minimum recommended asphalt temperature for successful cutting is 50° Fahrenheit (10° Celsius).  Operating Roto-Cut asphalt cutters in asphalt below 50° F will result in reduced productivity and may result in damage to the Roto-Cut itself.   How long will the cutting blade last? Blades are manufactured from hardened, heat-treated steel.  Blade life is dependent on asphalt composition, aggregate size, sand content, etc.  Normal blade life expectancy is 30,000 to 35,000 linear feet.   What maintenance is involved? There is only one moving part in Roto-Cut asphalt cutters -- the wheel.  Wheel bearings are lubricated through a conveniently located grease fitting.  Also expect to replace worn blades.  Replacing a worn blade is a simple process.  Remove the bolts holding the main axle into the frame, and then remove the bolts attaching the cutting wheel to the main axle.  After replacing the blade, slide the axle into place and retighten bolts.  It is not necessary to remove and potentially damage the axle, bearings and seals.  Total replacement time is typically less than 15 minutes.     Updated: 5/2/2003 1:57:10 PM Questions? Contact Us   Equipment descriptions and specifications are subject to change without notice. http://www.AlliedCP.com