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OPERATING ENVIRONMENT

Temperature Range:

NB linear systems are heat-treated in order to harden the surface. Because of this, if the temperature of the system exceeds 100 , the hardness and rated load will be reduced (refer to page Eng. 5, hardness coefficient). If resin is used in any one of the components, the system cannot be used in a high-temperature environment. The recommended operating temperature ranges for each type of linear system are listed in Table 1-23.

Table 1-23 Material Type and Recommended Temperature Range * If the system is made of stainless steel and has a seal, the temperature should be below 120 component material includes resin steel stainless other operating temperature range 20 80 20 110 20 140 slide guide SEB-A/SEBS-B/GL/SGL/SGW SER SEBS-BM/SERS ball spline SSP/SSPF/SSPB SPLFS rotary ball spline SPR GM/SM G/KB G/SW G/SMS G/KBS G/SWS G slide bush SM/KB/SW SMS/KBS/SWS SMA G/AK G/RB/RBW/TKA/TWA/CE/CD slide unit SMA/AK/SWA SMSA/AKS/SWSA stroke bush SR/SRB slide rotary bush RK SRE slide way NV SV/SVW/RV SVS/SVWS slide table NVT SVT/SYT SYTS/SYBS SVTS** slide screw SS ** Contact NB if system is to be used at temperatures beyond the recommended temperature ranges.

Temperature conversion equation

C= 5 (F-32) 9 9 F=32+Operating Environment: C 5

Figure 1-10 Example of Dust Prevention Devices

Dust and perticle debris will adversely affect the motion characteristics of a linear system. They can also cause abnormally fast wear. In a normal operating environment, the use of seals may prevent adverse effects to the linear system. However, the linear system should be well protected by using bellows or a protective cover when it is used in an extremely hostile environment. (Figure 1-10)

bellowscover

Eng-19