The ball screw includes a cage or circulating ball element to achieve linear motion. They operate at a low efficiency of 90%, have a predictable life, and can produce less heat even during long-term use. They are ideal for 100% duty cycle applications and high-speed applications. The trade-off of high efficiency is that the ball screw actuator is not self-locking. If used for vertical applications, braking is required. The recirculating ball also produces a lot of audible noise. Ball screw actuators can be preloaded to provide the responsiveness required by the application. Biseno lubricant, combined with many years of lubrication experience, has taken the lead in developing a variety of ball screw greases.

滾珠絲杠可以用潤滑脂或油潤滑。潤滑脂更常用于滾珠絲杠潤滑，因?yàn)樗恍枰獜?fù)雜的輸送方法，并且需要較少的重新潤滑間隔。但是，盡管使用潤滑脂非常簡單，但在許多應(yīng)用中，油潤滑是滾珠絲杠組件的選擇。

Ball screws can be lubricated with grease or oil. Grease is more commonly used for ball screw lubrication because it does not require complex conveying methods and requires less relubrication intervals. However, although the use of grease is very simple, oil lubrication is the choice of ball screw assemblies in many applications.

，油提供冷卻并使?jié)L珠絲杠組件內(nèi)的熱量積聚小化。熱量導(dǎo)致螺桿軸的熱膨脹，這改變了螺紋的尺寸并對(duì)定位精度產(chǎn)生負(fù)面影響，因此在需要高速和/或高精度的應(yīng)用中減少熱量是關(guān)重要的。如果油通過外部潤滑系統(tǒng)循環(huán)，則油的冷卻效果可能很大。循環(huán)系統(tǒng)還允許從油中過濾碎屑，這延長了潤滑的壽命并減少了螺桿組件的磨損。缺點(diǎn)是外部循環(huán)系統(tǒng)增加了組裝的復(fù)雜性和成本。

First, the oil provides cooling and minimizes heat accumulation in the ball screw assembly. Heat causes the thermal expansion of the screw shaft, which changes the size of the thread and has a negative impact on the positioning accuracy. Therefore, reducing heat is very important in applications requiring high speed and / or high accuracy. If the oil is circulated through an external lubrication system, the cooling effect of the oil may be great. The circulation system also allows debris to be filtered from the oil, which extends the lubrication life and reduces the wear of the screw assembly. The disadvantage is that the external circulation system increases the complexity and cost of assembly.

當(dāng)使用油進(jìn)行滾珠絲杠潤滑時(shí)，使用適量的正確粘度油非常重要。如果油粘度太高，或者油太多，可能會(huì)產(chǎn)生過多的熱量。另一方面，如果油粘度太低，或者如果沒有足夠的油潤滑，螺桿將經(jīng)歷額外的摩擦并且將加速磨損。適當(dāng)?shù)挠驼扯热Q于螺桿的平均速度，直徑和工作溫度。如果施加的負(fù)載很高-通常大于動(dòng)態(tài)負(fù)載能力的15％到20％-制造商通常建議使用帶有極壓（EP）添加劑的油，以提供額外的防磨損保護(hù)。

When using oil for ball screw lubrication, it is very important to use an appropriate amount of correct viscosity oil. If the oil viscosity is too high, or too much oil, too much heat may be generated. On the other hand, if the oil viscosity is too low, or if there is not enough oil lubrication, the screw will experience additional friction and will accelerate wear. The appropriate oil viscosity depends on the average speed, diameter and operating temperature of the screw. If the applied load is very high - usually greater than 15% to 20% of the dynamic load capacity - manufacturers usually recommend the use of oil with extreme pressure (EP) additives to provide additional wear protection.