Original Screws Screw

Introduction of the Ball Screw

A ball screw is a mechanical device on which the ball can exercise between the nut and the screw. Besides, it can translate the rotational motion to linear motion with little friction. The ball screw has many characteristics such as high precision, long life, and low pollution. Moreover, it can reverse the drive at high speed. Due to its specific features, ball screw is becoming one of the important components used in the precision machinery industries, positioning and measurement systems.

The application of ball screw does not have a very long history. Traditional screw was very poor in positioning and was quite easy to be damaged. Not until 1898 that people first tried to put the steel ball between nut and screw to replace the sliding friction with the rotational friction so as to improve the bad position. In 1949, a ball screw device was placed in the car and it became a great revolution in the application of the ball screw. Gradually, the traditional screw (ACME) was replaced. And in recent years, ball screw becomes one of the components that are widely used in the industries.

Originally, only the United Kingdom, the United States, Germany, Japan and other advanced industrial countries can produce ball screws with a large quantity. Since 1982, He Feng Precision Company had set up factories to manufacture this product. And with the quick development, the research and development ability of ball screws can compete with advanced industrial countries.

Ball screws are mainly formed by screw, nut, ball, holder, wipers, and the return tube. The ball assembly acts as the nut while the threaded shaft is the screw. Due to their different circulatory systems, they can be divided into different kinds such as ball screws with outside circular and internal circulation, etc.

This mechanical component has a wide range of usage. It can be widely used in industrial machinery such as precision machine tools, industrial machinery, electronic machinery, and transport machinery, etc. Ball screws are used in aircraft and missiles to move control surfaces, especially for electric fly by wire. They are also used in machine tools, robots and precision assembly equipment. In addition to the above applications, it can also be applied in the drive of the computer disk drive starter, the adjustment of the aircraft wings, and medical X-ray examination. All in all, it plays a rather important part in the development of different industries. And it is quite necessary to learn something about this mechanical device.

About the Author

SeekPart.com is the global B2B platform in the industry of mechanical parts. SeekPart aggregates the trade leads in this area, and our ultimate target is to benefit the buyers and sellers of mechanical parts by utilizing these leads through our online tools.

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Screws & Screw-Making: With a Chapter on the Milling Machine ... $28.75 This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

Air-Screws: An Introduction to the Aerofoil Theory of Screw Propulsion, $21.28 This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

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SUNPOCKET II $215 Sunpocket II Gold is an original unisex model coming straight from the heights of the French Alps. It was made for an active life style and the frame tucks neatly behind the ear and sits tight. The lightweight shade is made in Mauritius. Sunpocket Gold has its origins in the 1980's classic Sunpocket Prestige, and has, as its predecessor, been accessorized with 24 karat gold plated poly carbonated lens with 100% UV-protection . This unique model comes in a leather case hand made in Sweden, the ecologically tanned leather supplied by well-reputed Tärnsjö Garveri.

SUNPOCKET SPORT $215 Sunpocket Sport Gold is an original unisex model coming straight from the heights of the French Alps. It was made for an active life style and the frame tucks neatly behind the ear and sits tight. The lightweight shade is made in Mauritius. Sunpocket Gold has its origins in the 1980's classic Sunpocket Prestige, and has, as its predecessor, been accessorized with 24 karat gold plated poly carbonated lens with 100% UV-protection . This unique model comes in a leather case hand made in Sweden, the ecologically tanned leather supplied by well-reputed Tärnsjö Garveri.

Sunpocket II $75 As the name indicates this is Sunpocket's second model and it is best described as a more elegant and classic model, still with a sporty appearance. The timeless design suits the people in progress, may it be down the road or up the hill. The lightweight shade is made at Mauritius, the Indian Ocean. This model is equipped with our granite coloured “all weather” lens with a darker upper and lower part to protect from sunrays and from the suns reflection. The polycarbonate lens is unbreakable and gives 100% UV-protection.

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