Power take-off: Difference between revisions
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The PTO and its associated shafts and [[universal joint|U-joints]] are a common cause of trauma in farming and industry. When a piece of clothing, which can be as small as a single thread, touches a spinning part it can be pulled around the part. The clothing and the person wearing it are instantaneously pulled into the shaft resulting in loss of a limb or death. |
The PTO and its associated shafts and [[universal joint|U-joints]] are a common cause of trauma in farming and industry. When a piece of clothing, which can be as small as a single thread, touches a spinning part it can be pulled around the part. The clothing and the person wearing it are instantaneously pulled into the shaft resulting in loss of a limb or death. |
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Agricultural PTOs are standardized in dimensions and speed. The original specification calls for operation at 540 RPM. Two newer specifications, supporting higher horsepower applications, operate at 1000 RPM and differ in shaft size. The larger shaft has 21 splines, while the smaller has 20. All three types rotate clockwise when viewed from the implement. |
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Revision as of 23:36, 31 March 2004
A power take-off (PTO) is a spinning shaft, usually on a tractor or truck that can be used to provide power to an attachment or separate machine. It is designed to be easily connected and disconnected.
The PTO and its associated shafts and U-joints are a common cause of trauma in farming and industry. When a piece of clothing, which can be as small as a single thread, touches a spinning part it can be pulled around the part. The clothing and the person wearing it are instantaneously pulled into the shaft resulting in loss of a limb or death.
Agricultural PTOs are standardized in dimensions and speed. The original specification calls for operation at 540 RPM. Two newer specifications, supporting higher horsepower applications, operate at 1000 RPM and differ in shaft size. The larger shaft has 21 splines, while the smaller has 20. All three types rotate clockwise when viewed from the implement.