Air Speed Measurements: Handheld Solution
T Davis Instruments;; 510-732-9188.

Track Loaders: Increased Productivity
C Caterpillar;; 309-675-1000

Crawler Loader: More Versatile
T John Deere;; 800-275-5322.

Rotary Hammers: Smooth Operation
Milwaukee Electric Tool Corp.;; 800-729-3878. he new Turbo Meter from Davis Instruments measures air velocities within a 3% accuracy, all in a compact 2.6 x 4.7 in., 3-lb package. A freely turning turbine rotates at a speed directly proportional to wind velocity, balanced on sapphire jewel bearings and measured by an infrared light beam to avoid adding friction. The handheld device can be used for air velocity measurements in ventilation shafts, air-conditioning conduits and chimney flues. It also is useful in fields such as crane operation, welding and mining. A bright LED display can give measurements in either feet per minute, meters per second, miles per hour or knots. aterpillar's new 953D and 963D track loaders are designed to deliver more production with lower operating costs than the models they replace, the maker says. Both are powered by Cat's 6.6-liter, six-cylinder ACERT engines that deliver 148 hp in the 953D and 189 hp in the 963D, a 15% and 25% increase, respectively, compared to C-Series models. Both machines feature a completely new load-sensing electro-hydraulic implement system that allows the implement pump to provide only the flow required needed by the work tool and lift arms, delivering more power to the tracks when needed and increased fuel efficiency. A new sealed and pressurized cab includes an air-suspension seat for operator comfort and seat-mounted electro-hydraulic controls with less vibration. For improved serviceability, the cab tilts forward to allow access to the drive train and hydraulic system. Daily maintenance points are centralized in the right side of the machine. The 953D has an operating weight of 34,381 lb and maximum lift height of 142.1 in. to the bucket hinge pin. The 963D weighs 45,128 lb and has a maximum lift height of 155.1 in. he new 755D crawler loader from John Deere has a 6.8-liter six-cylinder engine that produces 181 hp at 1,800 rpm, and a state-of-the-art hydrostatic transmission controlled by a single lever that enables the machine to provide power management, infinite speed control, power turns, counter rotation and dynamic braking, the maker says. New features include transmission rates that can be quickly adjusted with a laptop computer. Drawbar pull has been increased by 18% and the machine includes load-sensing hydraulics that deliver predictable response regardless of the load. New unitized track frames have outside-mounted final drives. Weight distribution has been redesigned: With a standard 2,090-lb counterweight, the machine has the highest tipping load in its class at 31,597 lb, the maker says. Operating weight is 46,255 lb and breakout force is 36,869 lb. Operator comfort has been enhanced with access doors that are 4-in. wider than the previous model and there is increased airflow and defrosting from 10 adjustable vents. The cab tilts reward with the removal of four bolts. ilwaukee Electronics introduces two new versatile models of its SDS Rotary Hammer. Both include the new Anti-Vibration System, and soft grip handle to reduce vibration and improve comfort. With drill only, rotary hammer, and chisel modes, the rotary hammers can do concrete drilling, wood and steel drilling and light chiseling. The 5369-21 model is able to deliver 2.4 ft/lb of impact energy in a 171/4-in. long, 7.9-lb package. The slightly smaller 5363-21-1 compact model is capable of 2.0 ft/lb of impact energy and has a length of only 13 in. Both models have a 1 in. solid bit drilling capacity in concrete, and feature keyless SDS chucks for fast bit changes and a two-finger variable speed trigger for greater control.