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Process for selecting NB LINEAR SYSTEM
In order to select the optimal NB product for your system, it is necessary to check and calculate about various conditions in your system. Please select optimal NB product according to the following procedures.
（For details, please refer to the PDF catalogs on the Downloads Page.）
1. Check the application conditions
Identify machine type to be used, application conditions, environmental conditions, and desired accuracy.
2. Decide system type
Please decide the system type depending on the operating conditions.
3. Pre-select the size and number of linear systems
Pre-select the size and number based on balance of machinery and other equipment as well as past experience.
4. Calculate applied load
Calculate applied load on each system. Calculate average variable load.
Refer to Engineering Information [ Method for Determining Applied Load ]
5. Determine static load
Determine basic static load rating and allowable static moment by applying static safety factor.
* When neither a point to be checked nor a calculation result fulfills conditions in this stage, it is necessary to return to [2:Decide system type] and to do selection again.
Refer to Engineering Information [Allowable Load]
6. Compute rated life
Checking Hardness Coefficient, Temperature Coefficient, Contact Coefficient and Applied Load Coefficient, please compute the rated life in cosideration of the applied load (No.4) and the basic dynamic load rating (Pre-selection).
* When conditions are not fulfilled as compared with [1:Determine the application conditions], it is necessary to return to [2:Decide system type] or [3:Pre-select the size and number of linear systems] and to do selection again.
Refer to Engineering Information [Life]
7. Determine preload and accuracy
Decide preload and accuracy based on the operating conditions. (refer to each product description for preload and accuracy)
* When neither a point to be checked nor a calculation result fulfills conditions in this stage, it is necessary to return to [2:Decide system type] or [3:Pre-select the size and number of linear systems] and to do selection again.
Refer to Engineering Information [Rigidity and Pre-Load]
8. Select Lubrication and dust prevention method
Select lubrication and dust prevention method. (seals, bellows, covers)
Refer to Engineering Information [Operating Environment]
9. Confirm the space needed in the equipment
Confirm space and installation dimensions in consideration of the machine size and ease of maintenance.
* When neither a point to be checked nor a calculation result fulfills conditions in this stage, it is necessary to return to [2:Decide system type] or [3:Pre-select the size and number of linear systems] and to do selection again.
Thus, selection completed.
If you have any question, please contact NB.
