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OTC Tools (originally Owatonna Tool Company) is a tool and equipment manufacturer. It was founded in Owatonna, Minnesota, by Godfrey Kaplan, who operated a small machine shop there. Kaplan's son Rueben, invented the "Grip-O-Matic" universal gear puller and received his first patent. [1] The tool remains virtually unchanged to this day. [2]
Slew ring bearing. A slewing bearing or slew[ing] ring (also called a turntable bearing) is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slowly-oscillating loads in combination (axial, radial and moment loads), often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis (yaw) windmill.
In mechanical engineering, backlash, sometimes called lash, play, or slop, is a clearance or lost motion in a mechanism caused by gaps between the parts. It can be defined as "the maximum distance or angle through which any part of a mechanical system may be moved in one direction without applying appreciable force or motion to the next part in mechanical sequence."
There are many types of such equipment, from hand tools and power tools to tractors and the farm implements that they tow or operate. Machinery is used in both organic and nonorganic farming. Especially since the advent of mechanised agriculture , agricultural machinery is an indispensable part of how the world is fed.
The slewing drive is a modernized take on the worm drive mechanism, which dates back many centuries and was widely used during the Renaissance Era. Pappus of Alexandria (3rd century AD), a Greek mathematician, is credited with an early version of the endless screw, which would later evolve into the worm drive. [1]
By the late 1940s and early 1950s, other farm equipment manufacturers were offering increased competition to Gleaner, having introduced their own versions of self-propelled combines. [4] In 1955, Allis-Chalmers acquired Gleaner. This represented commercial renewal for Gleaner with the production and marketing success of various new models and ...
A PTO at the rear end of a farm tractor A PTO (in the box at the bottom) in the center of the three-point hitch of a tractor. A power take-off or power takeoff (PTO) is one of several methods for taking power from a power source, such as a running engine, and transmitting it to an application such as an attached implement or separate machine.
Gear bearings are similar to epicyclic gearing. They consist of a number of smaller 'satellite' gears which revolve around the center of the bearing along a track on the outsides of the internal and satellite gears, and on the inside of the external gear. The downside to this bearing is manufacturing complexity.
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