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THE SAME SIZE HORSE 
from half the motor
PLUS THIS SCREW [[image]][[/image]] THAT ROLLS ON BALLS

Replace the common high-sliding-friction screw with an AEROL Ball-Screw mechanism, and you can double drive efficiency. Because this mechanism moves on a friction-less stream of steel balls, it eliminates the dead loss of friction. This means you can use a 1-horsepower motor where a 2-horse was formerly needed...a 5-horse where 10 was called for, allowing you to save on motor size and weight, first cost, space and electricity required.

Because AEROL Ball-Screws move entirely on steel balls, they provide two additional advantages. They eliminate the need for lubrication, letting you operate in extremely high temperatures without fear of fire, and in extremely low temperatures without problems of sluggish operation. They make possible fast, precise, continuous positioning down to near-zero tolerance.

These AEROL Ball-Screws are at work now on aircraft, on trucks and cars, on machine tools, on standard and special equipment of all kinds.

AEROL Ball Screws may be able to solve a problem for you. To get more information, write for our free booklet.

Cleveland Pneumatic
Tool Company CLEVELAND 5, OHIO      [[image]][[/image]]
DEPARTMENT NAS-55
BALL-SCREW MECHANISMS • AIR-OIL IMPACT ABSORBERS
AIRCRAFT GROUND HANDLING EQUIPMENT

WORLD'S LARGEST MANUFACTURER OF AIRCRAFT LANDING GEARS

Cleveland Pneumatic Products Now at Work on Aircraft

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Flight control actuator, used on the Grumman F9F8 Navy Fighter, consists of a ball screw driven by a 14-H.P. hydraulic motor, with the nut driven by a 1-H.P. electric motor. Peak operating load is 12,000 lbs.

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This ball-screw mechanism 28 1/2" long raises and lowers the nose wheels on the Goodyear ZP2N blimp. Powered by an 1/8-horsepower motor, it operates at tension loads of 4200 to 5040 pounds.

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Designed to be flash-butt-welded from three components, this C-124 landing-gear strut cylinder is resistance welded on Cleveland Pneumatic's 1,000,000-pound upset, 4,000,000-volt-ampere welding machine.

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Titanium is readily machined—turned, milled, honed, threaded, drilled, tapped—at Cleveland Pneumatic to make this prototype landing-gear strut cylinder for experimental tests.

3                             OFFICIAL DIRECTORY and LOG