>> P.272
2-222-예압량의크기·정밀도의등급-56예압량의크기정밀도의등급표준경예압중(中)예압중(重)예압상급정밀급초정밀급초초정밀급:무기호예압량의크기에대한세부사항은표3을참조하십시오.:T1:T2:T3:H:P:SP:UP정밀도등급에대한세부사항은표4를참조하십시오.상급()H정밀급(P)초정밀급(SP)초초정밀급(UP)50010001500200025003000트랙레일의길이Lmm그림1주행시평행도403020100평행도μmCAHDNB등급(등급기호)항목H의치수차N의치수차H치수의상호차(1)N치수의상호차(1)A면에대한슬라이드유닛C면의주행시평행도B면에대한슬라이드유닛D면의주행시평행도단위mm상급(H)±0.040±0.0500.0150.020정밀급초정밀급초초정밀급(P)(SP)(UP)±0.020±0.0250.0070.010±0.010±0.0150.0050.007±0.008±0.0100.0030.003그림1에따름그림1에따름주(1)동일한트랙레일에조합된슬라이드유닛끼리의상호차를나타냅니다.3표예압량예압의종류항목예압기호표준(무기호)경예압중(中)예압중(重)예압T1T2T3예압량N0(1)0.02C00.05C00.08C0사용조건·가볍고정밀한움직임·진동이매우적음·하중은균형있는부하·가볍고정밀한움직임·중간정도의진동이있을때·중간정도의오버행하중이부하될때·진동,충격이있을때·오버행하중이부하될때·중절삭주(1)비고예압이없거나약간의예압상태입니다.C0은기본정정격하중을나타냅니다.4표허용차및허용치
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