Linear guideways ( complete program ) - HIWIN - #7

Due to the termperature will affect the material of linear guide, therefore the permissible load will be reduced and the nominal service life will be decreased when over 100°C. Therefore, the basic dynamic and static load rating must be multiplied by the temperature factor. As some accessories are plastic which can't resist high temperature, the working enviornment is recommended to be lower than 100^oC.

°C 100 150 200 250

-1-1-'l I I I I I l'-

f_t 1.0 0.9 0.8 0.7 0.6

The loads acting on a linear guideway include the weight of slide, the inertia load at the times of start and stop, and the moment loads caused by overhanging. These load factors are especially difficult to estimate because of mechanical vibrations and impacts. Therefore, the load on a linear guideway should be divided by the empircal factor.

No impacts & vibration | V^15 m/min 1 ~ 1.2

Small impacts 15 m/min <V=60 m/min 1.2 ~ 1.5

Normal load 60m/min< 120 m/min 1.5 ~ 2.0

With impacts & vibration | V >120 m/min 2.0 ~ 3.5 MG Series

No impacts & vibration V=15 m/min 1 ~ 1.5

Normal load 15m/min <V^60 m/min 1.5 ~ 2.0

With impacts & vibration V >60 m/min 2.0 ~ 3.5

Transform the nominal life into the service life time by using speed and frequency.

Lh : Service life (hr) L : Nominal life (km) Ve : Speed (m/min) C/P : Load factor

Several factors affect the calculation of loads acting on a linear guideway (such as the position of the object's center of gravity, the thrust position, and the inertial forces at the time of start and stop). To obtain the correct load value, each load condition should be carefully considered.