Power-to-weight ratio. Ask a tradesperson for an opinion about a power tool and you''re mini drill press likely to hear how powerful it is for its weight. most of us want as much power as we can get for the weight press we carry. it''s easy to chuck feel the difference key between the most powerful and limit the least powerful drills, but it''s harder to judge power in relation to weight. i calculated power-to-weight switch ratios by dividing mini drill press each tool''s torque rating press by its weight. that allowed me to compare drills on the basis of inch-pounds of torque per pound of weight. i used the manufacturer''s torque specs but weighed the tools myself.

the new control system also includes an optional pattern changer valve on the 420d chuck and 430d, allowing the operator to select different control patterns. "this is helpful if the machine is to be used in the rental key markets," said carman. "the feature allows the machine to be set up to match the type of control limit pattern switch with which the operator may have experience. with this feature, the operator can get on the machine and very hand drill press quickly become efficient rather than having to relearn how the controls operate the machine." in the press standard configuration, the 416d is powered by the naturally aspirated 4.2 l cat 3054b diesel engine rated 75 hp net at 2200 rpm. the 4.0 chuck l turbocharged key cat 3054t diesel engine limit and switch rated 80 hp net at 2200 rpm is available as an option. both engines are four-cylinder direct-injection units.

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