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Where Profitability and Sustainability Meet CMI Develops Innovative HEAVY-DUTY STUMP GRINDING HEADOhios Dependable Dealer When CMI officials decided to create a stump grinding head for their mulching machine they consulted the expertscontractors who use stump grinders in the field. Those users told CMI they wanted a stump grinding head that was more rugged and robust and shared several problems they faced with other brands of stumping heads. CMIs solution is a stump grinder designed for longer life and lower ownerships costs. CMIs head has bigger bolts and uses the highest quality bearings biggest shaft and strongest chassis in the industry. To protect the bearings CMI uses a special seal that can stand up to barbed wire rather than the usual rubber seal. With competing heads customers reported that water and dust get in the bearing housing so we went to a special seal that cannot be destroyed said Steeve Charest territory manager for CMI. The grinder uses a bucktooth wheel made by Bucktooth Grinding Co. LLC of Ohio. The wheel was designed especially for CMI and has more teeth than other grinders have Charest said. Fewer teeth can cause hammering in the hydraulic system so this design helps the life of the hydraulic system and makes a smooth cut. The stump grinder attachment is available for the CMI 450 400L and 250. The wheel for the 450 is 38 inches compared to the 50-inch wheel competitors use so it has greater torque. On the 450 the attachment can reach 9 feet and grind 48 inches deep. This attachment lowers the overall cost of ownership said Bob Stewart Environmental Division sales rep. Everything is bigger thicker and heavier than any competitive product so it will last longer. There are replaceable wear liners in the grinding chamber long-lasting teeth and a heavy-duty drive belt. The hydraulic motor and valves are mounted on top of the stump grinder keeping them cleaner so they dont wear as quickly. Customers love the simplicity ease of maintenance and lower cost of ownership. Columbus Equipment Company customer HSM Services for example found using the stumper on a CMI 250 allowed them to cut labor in half and fuel costs by 75 percent compared to grubbing stumps with an excavator and horizontal grinder while clearing land in Ohio. The grinding attachment is an excellent example of CMI design Charest said. We like our stuff solid and simple. Columbus Equipment Company customer HSM Services for example found using the stumper on a CMI 250 allowed them to cut labor in half and fuel costs by 75 percent