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> Examples of Calculation and Choosing a proper SUPERBALL

Self-Aligning Linear Bushing
- Examples of Calculation and Choosing a proper SUPERBALL

The Maximum applied load and the travel life are the most important factor for choosing a proper Linear Bushing size. Below are the sample calculation of the expecting travel life and choosing of proper Linear Bushing size.

Working conditions

- Applied load ：250N(P) - Stroke ：250mm (ℓs)
- Number of strokes per minutes ：60(Nℓ) - Shaft Hardness ：HRC60 (fH = 1.0)
- Operating speed ：30m/minbr

Operating Speed V = 2×ℓs ×Nℓ
= 2×250×60 = 30000mm/min (fw = 1.6)

Other factors ( fc = fT) are considered as 1.0

Calculation of expected travel life

Since, basic dynamic load rating is based on travel life of 50km and assuming all other factors as 1.0, you can choose the Linear Bushing size that you can expected Travel life. Let's try LMES20UU with the above working conditions.

Choosing proper Linear Bushing

Let's assume our design travel life is 15,000hours,

Therefore, the proper SUPERBALL for above condition is LMES25UU which has 3800N as the Basic dynamic load rating.

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