Linear guideways (also called linear motion guides or linear rails) are precision mechanical components that enable smooth linear motion using recirculating ball or roller bearings. They are widely used in CNC machines, automation systems, and precision equipment where high accuracy and low friction are required.
![[Illustration: Rail, Carriage, Balls/Rollers, End Seals, Lubrication Ports]](image/LMGIllustration.png)
| Type | Characteristics | Accuracy | Load Capacity | Applications |
|---|---|---|---|---|
| Ball Guideways | Point contact, lowest friction | ±0.005mm | Medium | High-speed CNC, 3D printers |
| Roller Guideways | Line contact, higher rigidity | ±0.003mm | High | Heavy machining centers |
| Profile Rail Guides | 4-point contact, preloaded | ±0.001mm | Very High | Precision grinders, CMMs |
| Crossed Roller Guides | 90° roller arrangement | ±0.0005mm | Very High | Semiconductor equipment |
Note: Many machine tool builders use proprietary guideway systems based on these technologies.
| Maintenance Task | Frequency | Procedure |
|---|---|---|
| Lubrication | Every 100-500 km travel | Use recommended grease (e.g., Kluber Isoflex NBU 15) |
| Seal Inspection | Monthly | Check for cracks or deformation |
| Rail Cleaning | Weekly in dirty environments | Use lint-free cloth with isopropyl alcohol |
| Preload Check | Annually | Measure carriage play with dial indicator |
| Year | Unique Visitors | Page Views |
|---|---|---|
| 2025 | 83 | 87 |