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News

25.09.2014 | We invite you to visit our stand at the exhibition "Mashex-2014"!

Get an e-ticket to the exhibition "Mashex-2014"Dear Partners and Clients!

We invite you to visit our stand №C261, hall №3 at the 17th international exhibition of equipment and technologies of metalworking and working of composite materials "Mashex-2014", which will be organized from 28 to 31 October in the exhibition center "Crocus Expo", pavilion №1, Moscow, Russia.

24.09.2014 | We invite you to visit our stand at the exhibition "Stankostroenie-2014"!

Get an e-ticket to the exhibition "Stankostroenie-2014"Dear Partners and Clients!

We invite you to visit our stand №В222 , pavilion №1, hall №2 at the international specialized exhibition "Stankostroenie-2014", which will be organized from 14 to 17 October, 2014 in the exhibition center "Crocus Expo" (Moscow, Russia).



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Service life


The service life calculation

There are three main components that affect on the service life of the linear modules of SK series: ballscrews, rail guideways and bearings

 

Rail guideway 

L=(ft/f∙C/Pn ) 3 ∙50 km

L: Service life (km);
ft: Coefficient of contact;
fw: Load factor;
C: Dynamic load capacity;
Pn: Calculated load (N).

Block type Contact Coefficient ft
A1 1.0
A2 0.81



Operating Condition Loading Coefficient fw
Thrust and Vibration Velocity (v)
No Thrust V﹤15m/min 1.0-1.5
Low Vibration 15m/min﹤V﹤60m/min 1.5-2.0
High Vibration V﹥60m/min 2.0-3.5

 

Ballscrew and bearing

L=(1/f∙Ca/Pa,n)3 ∙106  rev

L: Service life (km);
fw: Load factor;
Ca: Basic dynamic load capacity (N);
Pa,n: Axial load (N).