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2. Precautions
2.
Precautions on Use
Ball Screw
2-3
Precautions on Use
C A U T I O N
Prevent dust
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Prevent foreign materials, such as cutting chips or coolant, from entering the product. Failure
to do so could damage the product.
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Prevent foreign materials, such as cutting chips, coolant, corrosive solvents or water from
getting in the product by using a bellows or cover when the product is used in an environment
where such a thing is likely.
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If foreign materials such as cutting chips adhere to the product, clean the product and then
replenish the lubricant.
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Slight―oscillations―can―inhibit―the―formation―of―an―oil―film―between―the―raceway―and―the―area―of―
contact for rolling elements, resulting in fretting. Therefore, be sure to use a type of grease
with high fretting resistance properties. We recommend periodically rotating the Ball Screw
nut―once―to―help―ensure―that―an―oil―film―forms―between―the―raceway―and―the―rolling―elements.
Maximum temperature
80°C
Max
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Do not use this product if the external temperature exceeds 80 °C. If used in excess of this
temperature, there is a risk that the resin and rubber parts may deform or become damaged
(except the heat-resistant type).
Handle with care
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Do not forcibly drive a pin, key, or other positioning parts into the product. This could create
indentations on the raceway and impair the product's functions.
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If misalignment or tilting occurs with the Ball Screw shaft supporting portion and the Ball
Screw nut, it may substantially shorten the service life. Pay attention to the components to be
mounted and to the mounting accuracy.
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Do not exceed the permissible rotational speed when using the product. Doing so may cause
the product to become damaged or result in an accident. Please keep the rotational speed
within―THK―specifications.
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Do not allow the Ball Screw nut to overshoot. The product may malfunction if any of the balls
fall out, the circulation components become damaged, or indentations form on the ball
raceway. Continuing to use the product under these circumstances may lead to premature
wear or damage to the circulation components.
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When using the Ball Screw, be sure to use guide elements such as an LM guide or ball spline.
This is one of the primary reasons why products become damaged.
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A lack of rigidity and accuracy of mounting components may cause the bearing load to
localize,―reducing―the―performance―of―the―bearing―significantly.―Therefore,―consider―carefully―
the rigidity and accuracy of the housing and base, and the strength of the securing bolts.
Falling objects
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If any of the rolling elements fall from the Ball Screw nut, discontinue use and contact THK.
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If the unit will be positioned vertically, install safety equipment or take other measures to
prevent it from falling over. There is a chance the Ball Screw nut may fall under its own
weight.
www.thk.ru
тел. +7(499) 703-39-86
