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Home> Company News> How to Select the Ball Screw Lubrication?

How to Select the Ball Screw Lubrication?

2025,07,03
Hojama high-precision Ball Screw maintains its low-friction performance by employing lubricants to mitigate the rolling resistance between balls and raceway surfaces, as well as the sliding friction among adjacent balls. Before initial lubrication or relubrication, the ball screw assembly must undergo thorough cleaning to eliminate all contaminants.
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Oil Lubrication

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Implementation: Lubricating oil is directly injected into the lubrication point at a specified flow rate. As the oil circulates through the ball nut, it flushes out residual moisture and contaminants within the nut while providing a cooling effect.
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顿谤补飞产补肠办蝉：

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1. Excessive oil injection may contaminate the machining process coolants, such as mixing with cutting fluids in manufacturing applications.
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2. Higher costs arise from the requirement for oil pumps and metering systems.
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Grease Lubrication

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Merits: Grease lubrication offers lower costs than oil-based systems, requires less frequent application, and avoids contamination of cutting fluids.
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尝颈尘颈迟补迟颈辞苍蝉：

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1. Grease retention within the nut is challenging, with accumulation prone to occur at the stroke endpoints of the nut, areas where machining debris and abrasive particles tend to aggregate.
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2. Relubrication grease may exhibit incompatibility with existing grease, necessitating prior compatibility verification.
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The lubrication cycle of ball screws is crucial for ensuring their normal operation and maintenance. The selection of an appropriate lubrication cycle mainly depends on factors such as the usage environment, load conditions, and working mode of the linear motion ball screws. Generally, it is recommended to perform the first lubrication before the ball screw assemblies start operating and establish a suitable maintenance plan.
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The lubrication cycle can be evaluated based on the following aspects:

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1. Service time of equipment: The lubrication cycle can be formulated based on the service time of the equipment. If the equipment is in long-term operation, the lubrication cycle should be appropriately shortened; if the equipment is in intermittent operation, the steel ball screw lubrication cycle can be appropriately extended.
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2. Working environmental conditions: Factors such as temperature, humidity, and dust in the working environment may affect the lubrication effect and lubrication cycle of ball screws. In harsh working environments, the lubrication cycle should be shortened to protect the ball screws better.
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3. Load conditions of ball and screw: The load size of ball screw system directly affects the selection of the lubrication cycle. A larger load may generate more heat and friction, so the ball screw lubrication cycle needs to be shortened to ensure the lubrication effect.
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