[ILLUSTRATION OMITTED]Size matters. It''s easy to see why an SDS-max rotary hammer (the red Milwaukee) is the best tool for big holes and frequent use. The ample size reduces radialarmdrillpresses vibration, and stout motors can turn 2-inch spiral bits. The blue cordless Makita SDS-plus rotary hammer (bottom) is handy, but its smaller chuck and motor are meant only for bits up to 3/4 inch. The 1/2-inch DeWalt radialarmdrillpresses hammer drill (right) is versatile, but drilling in hard concrete is slow and the conventional radialarmdrillpresses chuck isn''t made for heavy pounding.

The feature enhancements begin up-front with the new 60 Series combines. A new fore/aft tilt-frame feederhouse is standard on all machines - except the Sidehill combine. The 17-degree fore-aft-tilt-angle allows for proper positioning of the platform and insures radialarmdrillpresses that the cutter bar runs parallel to the ground for all tire sizes.Proper positioning of the cutterbar prevents knife guards from bulldozing or the platform from skidding on its rear frame. A simple draw bolt adjustment on the feederhouse is quick and easy and the pivot point is located in the center of the tilt frame for a proper angle to maximize the feeding of crop into the feederhouse throat.

The application of microprocessor technology has long been expected to move out of the automotive world into heavy-duty engines and equipment, and now the first results of that technology are beginning to be felt in the industrial engine-powered equipment world."With electrically driven accessories, we have the ability to provide only the flow, pressure or power required to match actual operating conditions. By continuously adjusting to different operating modes, there are a number of control features and opportunities available," said David Orr, commercial manager of Caterpillar Inc.''s More Electric Initiative Program.

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