catalogue search
P. 01
P. 02
P. 03
P. 04
P. 05
P. 06
P. 07
P. 08
P. 09
P. 10
P. 11
P. 12
P. 13
P. 14
P. 15
P. 16
P. 17
P. 18
P. 19
P. 20
P. 21
P. 22
P. 23
P. 24
P. 25
P. 26
P. 27
P. 28
P. 29
P. 30
P. 31
P. 32
P. 33
P. 34
P. 35
P. 36
P. 37
P. 38
P. 39
P. 40
P. 41
P. 42
P. 43
P. 44
P. 45
P. 46
P. 47
P. 48
P. 49
P. 50
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
You may also be interested in
Optical encoder, Digital converter, Linear guide, Electric actuator, Counter
Text version of the page
| HIWIN, G99TE13-0809 | ||||||||||||||||||||
| 1-3 Basic Load Ratings of Linear Guideways 1-3-1 Basic Static Load | ||||||||||||||||||||
| (1) Static load rating (C0) Localized permanent deformation will be caused between the raceway surface and the rolling elements when a linear guideway is subjected to an excessively large load or an impact load while either at rest or in motion. If the amount of this permanent deformation exceeds a certain limit, it becomes an obstacle to the smooth operation of the linear guideway. Generally, the definition of the basic static load rating is a static load of constant magnitude and direction resulting in a total permanent deformation of 0.0001 times the diameter of the rolling element and the raceway at the contact point subjected to the largest stress. The value is described in the dimension tables for each linear guideway. A designer can select a suitable linear guideway by referring to these tables. The maximum static load applied to a linear guideway must not exceed the basic static load rating. (2) Static permissible moment (M0) The static permissible moment refers to a moment in a given direction and magnitude when the largest stress of the rolling elements in an applied system equals the stress induced by the Static Load Rating. The static permissible moment in linear motion systems is defined for three directions: Mr, Mp and My. | ||||||||||||||||||||
| (3) Static safety factor This condition applys when the guideway system is static or under low speed motion. The static safety factor, which depends on environmental and operating conditions, must be taken into consideration. A larger safety factor is especially important for guideways subject to impact loads (See Table 1.1). The static load can be obtained by using Eq. 1. | ||||||||||||||||||||
| Table 1.1 Static Safety Factor | ||||||||||||||||||||
| Load Condition fSL , fSM (Min.) | ||||||||||||||||||||
| fsL : Static safety factor for simple load fsM : Static safety factor for moment Co : Static load rating (kN) Mo : Static permissible moment (kN-mm) P : Calculated working load (kN) M : Calculated appling moment (kN-mm) | ||||||||||||||||||||
| 1-3-2 Basic Dynamic Load | ||||||||||||||||||||
| (1) Dynamic load rating (C) The basic dynamic load rating is an important factor used for calculation of service life of linear guideway. It is defined as the maximum load when the load that does not change in direction or magnitude and results in a nominal life of 50km of operation for a linear guideway (100km for roller type). The values for the basic dynamic load rating of each guideway are shown in dimension tables. They can be used to predict the service life for a selected linear guideway. | ||||||||||||||||||||