The S40 stump grinder is supplied with a bent axis piston motor which is the best option in the industry for both efficiency and longevity. By matching a motor to your skid steers hydraulic flow these high efficiency motors make the most hydraulic power transforming it into the highest available stump grinding performance. Stocked with 12 High speed teeth the massive 1.25” thick steel rotor provides the back bone for the Skidsteer mounted stump grinder. The teeth can also be rotated up to 3 times to provide a renewed cutting surface even in the field and the concave shaped carbide tip of our High-Speed Teeth provides aggressive cutting action.