1, Setting conditions
- Dimensions of machines and systems
- Space in the guide section
- Installation direction (horizontal, vertical, slant mount, wall mount, suspended)
- Magnitude and direction of the working load
- Stroke length
- Speed
- Operating frequency (duty cycle)
- Required service life
- Kinetic frequency
- Environment
2, Selecting a type of THK bearings
Select a type that meets the conditions.
- LM Guide
- Miniature Guide
- Slide Pack
- Ball Spline
- Linear Bushing
- LM Stroke
- Cross roller Guide
- Linear stage
- Roller type
- etc.
3, Predicting the Service Life
- Selecting size
- Selecting a number of blocks/nuts
- Determining a number of rails/shafts
4, Rigidity
- Selecting clearance
- Selecting preload
- Determining a fixing method
- Determining the rigidity of the mounting section
5, Accuracy
- Selecting an accuracy grade (feeding accuracy, runout accuracy)
- Accuracy of the mounting surface
6, Lubrication and Safety Design
- Determining lubricant (grease, oil, special lubricant)
- Determining lubrication method (regular lubrication, forced lubrication)
- Determining material (standard material, stainless steel, high temperature material）
- Determining surface treatment (anti-rust, appearance)
- Designing contamination protection (selecting bellows, telescopic cover, etc.)
7, Calculating the Thrust Force
Obtaining the thrust force required for linear motion.
select a drive method, eg. feed screw, belt, wire, chain, rack and pinion, linear moter. then go to the second step (selecting a type)