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2. Precautions
2.
Precautions on Use
Ball Spline
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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Small strokes 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 adding stroke movement
for approximately the spline nut length 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 the spline shaft supporting portion and the spline nut become misaligned or tilted, it may
substantially shorten the service life. Therefore, be sure to pay sufficient attention to the
components that are to be mounted and to the mounting accuracy.
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Inserting the spline nut onto the spline shaft while the rolling elements are removed may
cause early damage.
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When installing the spline shaft into the spline nut, identify the matching marks on the spline
shaft and the spline nut, and then insert the shaft straight while checking relative positioning.
Note―that―forcibly―inserting―the―shaft―may―cause―balls―to―fall―off.―If―the―spline―nut―is―attached―
with a seal or given a preload, apply a lubricant to the outer surface of the spline shaft.
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When installing the spline nut into the housing, do not hit the side plate, end cap, or seal;
gently insert it using a jig.
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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.
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If―desiring―to―have―a―flanged-type―Ball―Spline―additionally―machined,―such―as―having―a―dowel―
pin hole, contact THK.
Falling objects
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If any of the rolling elements fall from the spline nut, discontinue use and contact THK.
www.thk.ru
тел. +7(499) 703-39-86
