经过Mark Huebner，PBC线性
通过遵循一些简单的润滑准则，最大程度地减少腐蚀并最大化线性辊轴承系统的寿命。
Linear roller bearing systems offer distinct advantages in applications requiring high speed or quick change of direction. Because their diameter is larger, they also perform well in contaminated environments where they roll over or “push” particulate from the raceway. However, due to the nature of the design having both steel bearing races and a steel linear raceway, lubrication must be present to minimize the results of metal-to-metal contact and extend the life of the system.
内部辊润滑
例如,一些较小的直径辊PBC line are internally lubricated for long life. No additional lubrication is necessary for the internal rolling elements of the bearing. The rollers are sealed (or shielded) against the operating environment to prevent the egress of lubricant and the ingress of contaminants. Some larger rollers can be supplied with a grease access point and the internal components can be re-lubricated using a zerk fitting.
Raceway/guideway lubrication
为了确保长寿，有必要始终在赛道/铁路上进行润滑薄膜。正确应用后，润滑会做很多事情，包括：
• reducing wear
• reducing stress on the contact surfaces
• reducing friction (and therefore heat buildup)
•允许在产品的设计规格下运行（非润滑应用需要取消评估）
•帮助保护金属表面免受腐蚀（生锈和颗粒腐蚀）
Lubrication type
Technical, environmental, ecological and economic factors will determine whether oil or grease should be used in an application. In fact, the environmental is one of the most significant factors when selecting a lubrication type. If extreme conditions are expected, it’s highly recommended that you speak with a representative from the supplier company. This includes heavy contamination, when the expected particle size is smaller than 0.1 mm (0.005 in.) as small particles can more easily bypass seals and wipers.
另一个需要记住的重要的一点是有限公司mpatibility of lubricants must always be checked. This check should be done under both static and dynamic conditions and within the operating environment. Some lubricants may have unexpected, negative reactions with the plastics, elastomers or non-ferrous metals within the products. It’s possible to draw upon previous and practical experience or guidelines from the lubricant manufacturer. When in doubt, consult the lubricant manufacturer.<
Periodic lubrication/maintenance
润滑间隔取决于许多操作和环境条件，例如负载，中风，速度，加速度，安装位置/方向，所使用的润滑类型，温度，湿度和紫外线暴露。实际的润滑间隔应由在实际应用条件下进行的测试确定。
尽管实际的润滑间隔是针对应用的，并且仅通过测试确定，但某些准则通常可以用作“正常”条件下的起始参考点。例如，一个良好的经验法则是，应首先发生每1,000公里，50,000个周期或六个月的重新润滑。
Oil filled polymer lubricator
Some companies use a polymer lubricator. For example, some PBC Linear products offer a high-quality polymer lubricator which is an advanced, oil filled porous polymer that has been tested to show better performance and longer life than similar wiper/lubricators made of oil or grease-filled felt. In some applications, this special lubricator will last the life of the application without additional re-lubrication.
This lubricant within the polymer is NSF registered for both H1 and H2 applications (direct and indirect contact with food). It can also be used for washdown and industrial applications. The lubrication within the polymer contains corrosion inhibitors, anti-oxidants and extreme pressure (E.P.) additives. Table 1 shows some specific properties for the lubricant.
Used lubricants
Used lubricants should be disposed of using environmentally friendly methods. Most lubricant manufacturers have guidelines regarding their allowable storage, use and disposal. In addition, some countries have regulations for these issues for occupational safety and environmental protection. Furthermore, some companies may have adopted internationally accepted quality and standards policies (such as ISO14001), which will further regulate the use of lubricants within an application.
These guidelines and regulations must be followed and care should be exercised as to not specify a lubricant that is forbidden.
润滑失败
Contamination and lack of lubrication are the two primary causes of (ball-based) linear guide failures. Lack of lubrication will cause fretting corrosion, which can cause permanent system damage and eventually lead to system failure. Fretting corrosion is a form of damage caused by a combination of corrosion and abrasive wear. Fretting corrosion can typically be seen as a reddish discoloration on either mating raceway (track or roller), which is sometimes confused with rust. Both are signs that additional lubrication is necessary and the re-lubrication period must be decreased.
Operation in an un-lubricated state
虽然不建议，但可以在不润滑的情况下运行大多数系统。但是，最大负载，最大速度和预期寿命将大大减少。表2显示，与正确润滑系统相比，典型的非润滑系统将显着降低最大负载和最大速度。
In addition to significant reductions in maximum load and speed, un-lubricated systems will also experience an extreme reduction in expected life. Table 3 shows the expected life for both a lubricated and un-lubricated system for two different products with two different applied loads. The approximate reduction in lifetime has also been calculated.
PBC线性，太平洋轴承公司
www.pbclinear.com
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