2-3
2. Precautions
2.
Precautions on Use
Ball Screw
2-4
Lubrication
C A U T I O N
Check lubricant
z
Thoroughly remove anti-rust oil and feed lubricant before using the product.
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Do not mix different lubricants. Even grease containing the same type of thickening agent
may, if mixed, interact in an adverse manner due to disparate additives or other ingredients.
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When using the product in locations subject to constant vibrations or in special environments
such as in clean rooms, vacuums and under low/high temperatures, be sure to use a lubricant
suitable―for―the―specification/environment.
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When lubricating products that do not feature a grease nipple or oil hole, directly coat the
raceway surfaces with lubricant and perform several warm-up strokes to ensure that the
grease permeates the interior.
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Grease consistency can vary depending on the temperature. Keep in mind that the torque of
the―Ball―Screw―may―be―affected―by―changes―in―consistency.
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Following lubrication, there is the possibility that the rotational torque of the Ball Screw may
increase due to the stirring resistance of the grease. Before commencing operations, make
sure to run the unit through several warm-up cycles to ensure that the grease is adequately
integrated and dispersed.
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Excess grease may spatter immediately after lubrication. Wipe off spattered grease as
necessary.
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The properties of the grease deteriorate over time, thereby degrading the lubricity. It is
necessary to inspect and apply the grease in accordance with the usage frequency.
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How often grease should be replenished varies depending on the usage conditions and
environment. We recommend greasing the system approximately every 100 km traveled
(three to six months). Final greasing interval/amount should be set at an actual machine.
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There―is―a―risk―that―lubrication―may―not―work―sufficiently―if―the―lubricating―oil―does―not―circulate―
(because of how it is mounted or the oiling port of the nut), so be sure to give these factors
adequate consideration during design.
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It is necessary to use a good quality lubricant when using Ball Screws. Usage with no
lubrication may increase wear on the rolling elements and shorten the service life. Table 3-1
shows a guideline for the oil feed amount.
2-5
Storage
Store the Ball Screw horizontally in its original packaging in an indoor location where it is not
exposed to high or low temperatures or high humidity. Please note that if the product has been
kept in storage for an extended period of time, the lubricant inside may have deteriorated. Please
therefore ensure that you replenish the lubricant before re-use.
2-6
Disposal
The product should be disposed of appropriately as industrial waste.
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