For oil lubrication, the sealing method of filling grease in the sealed guide rail in advance, and the filling and grease supply method of filling proper amount of grease in the shell and replenishing or replacing at intervals are required. In addition, the centralized grease supply mode with pipes connected to each lubrication place is also adopted for the machinery with multiple sliding rails needing lubrication. Grease lubrication can be filled with grease for a long time without supplement, and the structure of its sealing device is simple, so it is widely used. Oil lubrication is relatively simple, regular lubrication can greatly improve the service life of linear guide and maintain a certain precision and preloading.

1、從摩擦負擔得起的加載考慮。平方計是平方線性導軌面接觸摩擦。摩擦較大。均布荷載。需要經常油潤滑但圓形導軌是圓柱形線性導軌。摩擦小。因為它是一系列的點接觸滾珠軸承。支持是有限的。剛性差負載性能是有限的。只有徑向載荷具有良好的承載力、軸向載荷很小。而方形導軌耐磨、高速、阻力小，所以更具優勢。

1. From the consideration of friction affordable loading. The square meter is the contact friction of the square linear guide surface. The friction is large. Uniform load. Regular oil lubrication is required, but the circular guide rail is a cylindrical linear guide rail. The friction is small. Because it's a series of point contact ball bearings. Support is limited. The difference of rigidity and load performance is limited. Only the radial load has good bearing capacity and the axial load is very small. The square guide rail is wear-resistant, high-speed, low resistance, so it has more advantages.

2、上銀直線導軌產品功能定位精度高。摩擦系數小。尤其是靜摩擦力和摩擦力之間的差距很小。即使不會有空閑打滑現象。分析能力和好的再現性。因此可以實現木工雕刻機可以維持很長一段時間的精 密直線導軌滾動摩擦μm水平的定位精度。低摩擦阻力，易潤滑，可降低導軌的滑動阻力1/20~1/40，特別潤滑結構簡單。摩擦接觸面磨損低，滑動效果好。行走精度可以長期保持。

2. Shangyin linear guide products have high function positioning accuracy. The friction coefficient is small. Especially the gap between static friction and friction is very small. Even if there is no idle slip. Analytical ability and good reproducibility. Therefore, the precision linear guide rolling friction of woodworking engraving machine can be maintained for a long time μ The positioning accuracy of m level. Low friction resistance, easy lubrication, can reduce the sliding resistance of guide rail 1 / 20 ~ 1 / 40, especially simple lubrication structure. The friction contact surface has low wear and good sliding effect. The walking accuracy can be maintained for a long time.