R162212320導軌滑塊用途

R162212320導軌滑塊用途 德國博世力士樂REXROTH導軌滑塊 滾珠絲桿 

REXROTH力士樂導軌滑塊在供貨范圍內)

提示

塑料孔蓋也可以作為配件訂購。

塑料孔蓋的安裝見“滾柱導軌導向系統(tǒng)

REXROTH力士樂導軌技術說明”

耐腐蝕型導軌 Resist CR，亞光銀色鍍

硬鉻，見“ Resist CR 標準導軌”，

部件號 R1845 .0. ..

規(guī)格 精度等級 導軌 間距 T2 推薦的導軌長度

單段

部件號，

導軌長度 L (mm)

多段

部件號和導軌段數，

導軌長度 L (mm) mm

安裝孔數 nB / 導軌長度 L (mm)

25 H R1805 253 31, .... R1805 253 3., .... 30 按公式計算 L = nB ? T2 – 4

P R1805 252 31, .... R1805 252 3., .... 較大至 133/3986

SP R1805 251 31, .... R1805 251 3., ....

UP R1805 259 31, .... R1805 259 3., ....

35 H R1805 353 31, .... R1805 353 3., .... 40 按公式計算 L = nB ? T2 – 4

P R1805 352 31, .... R1805 352 3., .... 較大至 100/3996

SP R1805 351 31, .... R1805 351 3., ....

UP R1805 359 31, .... R1805 359 3., ....

45 H R1805 453 31, .... R1805 453 3., .... 52.5 按公式計算 L = nB ? T2 – 4

P R1805 452 31, .... R1805 452 3., .... 較大至 76/3986

SP R1805 451 31, .... R1805 451 3., ....

UP R1805 459 31, .... R1805 459 3., ....

55 H R1805 553 31, .... R1805 553 3., .... 60 按公式計算 L = nB ? T2 – 4

P R1805 552 31, .... R1805 552 3., .... 較大至 66/3956

SP R1805 551 31, .... R1805 551 3., ....

UP R1805 559 31, .... R1805 559 3., .....

65 H R1805 653 31, .... R1805 653 3., .... 75 按公式計算 L = nB ? T2 – 4

P R1805 652 31, .... R1805 652 3., .... 較大至 53/3971

SP R1805 651 31, .... R1805 651 3., ....

UP R1805 659 31, .... R1805 659 3., ....

R162212320力士樂導軌滑塊導軌的結構設計

1. 滑動導軌 

三角形導軌：該導軌磨損后能自動補償，故導向精度高。它的截面角度由載荷大小及導向要求而定，一般為90?。為增加承載面積，減小比壓，在導軌高度不變的條件下，采用較大的頂角（110?～120?）；為進步導向性，采用較小的頂角（60?）。假如導軌上所受的力，在兩個方向上的分力相差很大，應采用不對稱三角形，以使力的作用方向盡可能垂直于導軌面。 

矩形導軌：優(yōu)點是結構簡單，制造、檢驗和修理方便；導軌面較寬，承載力較大，剛度高，故應用廣泛。但它的導向精度沒有三角形導軌高；導軌間隙需用壓板或鑲條調整，且磨損后需重新調整。 

****形導軌：****形導軌的調整及夾緊較簡便，用一根鑲條可調節(jié)各面的間隙，且高度小，結構緊湊；但制造檢驗不方便，摩擦力較大，剛度較差。用于運動速度不高，受力不大，高度尺寸受限制的場合。 

圓形導軌：制造方便，外圓采用磨削，內孔珩磨可達準確的配合，但磨損后不能調整間隙。為防止轉動，可在圓柱表面開鍵槽或加工出平面，但不能承受大的扭矩。宜用于承受軸向載荷的場合。 

REXROTH力士樂導軌滑塊R1621系列

REXROTH力士樂導軌滑塊R162111920

REXROTH力士樂導軌滑塊R162112920

REXROTH力士樂導軌滑塊R162113920

REXROTH力士樂導軌滑塊R162119320

REXROTH力士樂導軌滑塊R162119420

REXROTH力士樂導軌滑塊R162111120

REXROTH力士樂導軌滑塊R162111220

REXROTH力士樂導軌滑塊R162111320

REXROTH力士樂導軌滑塊R162111420

REXROTH力士樂導軌滑塊R162111422

REXROTH力士樂導軌滑塊R162112120

REXROTH力士樂導軌滑塊R162112220

REXROTH力士樂導軌滑塊R162112320

REXROTH力士樂導軌滑塊R162112420

REXROTH力士樂導軌滑塊R162113120

REXROTH力士樂導軌滑塊R162113220

REXROTH力士樂導軌滑塊R162121920

REXROTH力士樂導軌滑塊R162122920

REXROTH力士樂導軌滑塊R162123920

REXROTH力士樂導軌滑塊R162129320

REXROTH力士樂導軌滑塊R162129420

REXROTH力士樂導軌滑塊R162121120

REXROTH力士樂導軌滑塊R162121220

REXROTH力士樂導軌滑塊R162121320

REXROTH力士樂導軌滑塊R162121322

REXROTH力士樂導軌滑塊R162121420

REXROTH力士樂導軌滑塊R162122120

REXROTH力士樂導軌滑塊R162122220

REXROTH力士樂導軌滑塊R162122320

REXROTH力士樂導軌滑塊R162122420

REXROTH力士樂導軌滑塊R162123120

REXROTH力士樂導軌滑塊R162123220

REXROTH力士樂導軌滑塊R162131920

REXROTH力士樂導軌滑塊R162132920

REXROTH力士樂導軌滑塊R162133920

REXROTH力士樂導軌滑塊R162139320

REXROTH力士樂導軌滑塊R162139420

REXROTH力士樂導軌滑塊R162131120

REXROTH力士樂導軌滑塊R162131220

REXROTH力士樂導軌滑塊R162131320

REXROTH力士樂導軌滑塊R162131420

REXROTH力士樂導軌滑塊R162132120

REXROTH力士樂導軌滑塊R162132220

REXROTH力士樂導軌滑塊R162132320

REXROTH力士樂導軌滑塊R162132420

REXROTH力士樂導軌滑塊R162133120

REXROTH力士樂導軌滑塊R162133220

REXROTH力士樂導軌滑塊R162141920

REXROTH力士樂導軌滑塊R162142920

REXROTH力士樂導軌滑塊R162143920

REXROTH力士樂導軌滑塊R162149320

REXROTH力士樂導軌滑塊R162149420

REXROTH力士樂導軌滑塊R162141120

REXROTH力士樂導軌滑塊R162141220

REXROTH力士樂導軌滑塊R162141320

REXROTH力士樂導軌滑塊R162141420

REXROTH力士樂導軌滑塊R162142120

REXROTH力士樂導軌滑塊R162142220

REXROTH力士樂導軌滑塊R162142320

REXROTH力士樂導軌滑塊R162142420

REXROTH力士樂導軌滑塊R162143120

REXROTH力士樂導軌滑塊R162143220

REXROTH力士樂導軌滑塊R162151910

REXROTH力士樂導軌滑塊R162152910

REXROTH力士樂導軌滑塊R162153910

REXROTH力士樂導軌滑塊R162154910

REXROTH力士樂導軌滑塊R162151110

REXROTH力士樂導軌滑塊R162151210

REXROTH力士樂導軌滑塊R162151310

REXROTH力士樂導軌滑塊R162151410

REXROTH力士樂導軌滑塊R162159410

REXROTH力士樂導軌滑塊R162152110

REXROTH力士樂導軌滑塊R162152210

REXROTH力士樂導軌滑塊R162152310

REXROTH力士樂導軌滑塊R162152410

REXROTH力士樂導軌滑塊R162153110

REXROTH力士樂導軌滑塊R162153210

REXROTH力士樂導軌滑塊R162161910

REXROTH力士樂導軌滑塊R162162910

REXROTH力士樂導軌滑塊R162163910

REXROTH力士樂導軌滑塊R162169310

REXROTH力士樂導軌滑塊R162169410

REXROTH力士樂導軌滑塊R162161110

REXROTH力士樂導軌滑塊R162161210

REXROTH力士樂導軌滑塊R162161310

REXROTH力士樂導軌滑塊R162161410

REXROTH力士樂導軌滑塊R162162110

REXROTH力士樂導軌滑塊R162162210

REXROTH力士樂導軌滑塊R162162310

REXROTH力士樂導軌滑塊R162162410

REXROTH力士樂導軌滑塊R162163110

REXROTH力士樂導軌滑塊R162163210

REXROTH力士樂導軌滑塊R162171920

REXROTH力士樂導軌滑塊R162172920

REXROTH力士樂導軌滑塊R162173920

REXROTH力士樂導軌滑塊R162179320

REXROTH力士樂導軌滑塊R162179420

REXROTH力士樂導軌滑塊R162171120

REXROTH力士樂導軌滑塊R162171220

REXROTH力士樂導軌滑塊R162171320

REXROTH力士樂導軌滑塊R162171420

REXROTH力士樂導軌滑塊R162172120

REXROTH力士樂導軌滑塊R162172220

REXROTH力士樂導軌滑塊R162172320

REXROTH力士樂導軌滑塊R162172420

REXROTH力士樂導軌滑塊R162173120

REXROTH力士樂導軌滑塊R162173220

REXROTH力士樂導軌滑塊R162181920

REXROTH力士樂導軌滑塊R162182920

REXROTH力士樂導軌滑塊R162183920

REXROTH力士樂導軌滑塊R162189320

REXROTH力士樂導軌滑塊R162189420

REXROTH力士樂導軌滑塊R162181120

REXROTH力士樂導軌滑塊R162181220

REXROTH力士樂導軌滑塊R162181320

REXROTH力士樂導軌滑塊R162181420

REXROTH力士樂導軌滑塊R162182120

REXROTH力士樂導軌滑塊R162182220

REXROTH力士樂導軌滑塊R162182320

REXROTH力士樂導軌滑塊R162182420

REXROTH力士樂導軌滑塊R162183120

REXROTH力士樂導軌滑塊R162183220

REXROTH力士樂導軌滑塊R162211920

REXROTH力士樂導軌滑塊R162212920

REXROTH力士樂導軌滑塊R162213920

REXROTH力士樂導軌滑塊R162219320

REXROTH力士樂導軌滑塊R162219420

REXROTH力士樂導軌滑塊R162211120

REXROTH力士樂導軌滑塊R162211220

REXROTH力士樂導軌滑塊R162211320

REXROTH力士樂導軌滑塊R162211322

REXROTH力士樂導軌滑塊R162211420

REXROTH力士樂導軌滑塊R162211422

REXROTH力士樂導軌滑塊R162212120

REXROTH力士樂導軌滑塊R162212220

REXROTH力士樂導軌滑塊R162212320

REXROTH力士樂導軌滑塊R162212420

REXROTH力士樂導軌滑塊R162213120

REXROTH力士樂導軌滑塊R162213220

REXROTH力士樂導軌滑塊R162221920

REXROTH力士樂導軌滑塊R162222920

REXROTH力士樂導軌滑塊R162223920

REXROTH力士樂導軌滑塊R162229320

REXROTH力士樂導軌滑塊R162229420

REXROTH力士樂導軌滑塊R162221120

REXROTH力士樂導軌滑塊R162221220

REXROTH力士樂導軌滑塊R162221320

REXROTH力士樂導軌滑塊R162221322

REXROTH力士樂導軌滑塊R162221420

REXROTH力士樂導軌滑塊R162222120

REXROTH力士樂導軌滑塊R162222220

REXROTH力士樂導軌滑塊R162222320

REXROTH力士樂導軌滑塊R162222420

REXROTH力士樂導軌滑塊R162223120

REXROTH力士樂導軌滑塊R162223220

REXROTH力士樂導軌滑塊R162231920

REXROTH力士樂導軌滑塊R162232920

REXROTH力士樂導軌滑塊R162233920

REXROTH力士樂導軌滑塊R162239320

REXROTH力士樂導軌滑塊R162239420

REXROTH力士樂導軌滑塊R162231120

REXROTH力士樂導軌滑塊R162231220

REXROTH力士樂導軌滑塊R162231320

REXROTH力士樂導軌滑塊R162231420

REXROTH力士樂導軌滑塊R162231422

REXROTH力士樂導軌滑塊R162232120

REXROTH力士樂導軌滑塊R162232220

REXROTH力士樂導軌滑塊R162232320

REXROTH力士樂導軌滑塊R162232420

REXROTH力士樂導軌滑塊R162233120

REXROTH力士樂導軌滑塊R162233220

REXROTH力士樂導軌滑塊R162241920

REXROTH力士樂導軌滑塊R162242920

REXROTH力士樂導軌滑塊R162243920

REXROTH力士樂導軌滑塊R162249320

REXROTH力士樂導軌滑塊R162249420

REXROTH力士樂導軌滑塊R162241120

REXROTH力士樂導軌滑塊R162241220

REXROTH力士樂導軌滑塊R162241320

REXROTH力士樂導軌滑塊R162241420

REXROTH力士樂導軌滑塊R162242120

REXROTH力士樂導軌滑塊R162242220

REXROTH力士樂導軌滑塊R162242320

REXROTH力士樂導軌滑塊R162242420

REXROTH力士樂導軌滑塊R162243120

REXROTH力士樂導軌滑塊R162243220

REXROTH力士樂導軌滑塊R162251910

REXROTH力士樂導軌滑塊R162252910

REXROTH力士樂導軌滑塊R162253910

REXROTH力士樂導軌滑塊R162254910

REXROTH力士樂導軌滑塊R162251110

REXROTH力士樂導軌滑塊R162251210

REXROTH力士樂導軌滑塊R162251310

REXROTH力士樂導軌滑塊R162251410

REXROTH力士樂導軌滑塊R162259410

REXROTH力士樂導軌滑塊R162252110

REXROTH力士樂導軌滑塊R162252210

REXROTH力士樂導軌滑塊R162252310

REXROTH力士樂導軌滑塊R162252410

REXROTH力士樂導軌滑塊R162253110

REXROTH力士樂導軌滑塊R162253210

REXROTH力士樂導軌滑塊R162261910

REXROTH力士樂導軌滑塊R162262910

REXROTH力士樂導軌滑塊R162263910

REXROTH力士樂導軌滑塊R162269310

REXROTH力士樂導軌滑塊R162269410

REXROTH力士樂導軌滑塊R162261110

REXROTH力士樂導軌滑塊R162261210

REXROTH力士樂導軌滑塊R162261310

REXROTH力士樂導軌滑塊R162261410

REXROTH力士樂導軌滑塊R162262110

REXROTH力士樂導軌滑塊R162262210

REXROTH力士樂導軌滑塊R162262310

REXROTH力士樂導軌滑塊R162262410

REXROTH力士樂導軌滑塊R162263110

REXROTH力士樂導軌滑塊R162263210

REXROTH力士樂導軌滑塊R162271920

REXROTH力士樂導軌滑塊R162272920

REXROTH力士樂導軌滑塊R162273920

REXROTH力士樂導軌滑塊R162279320

REXROTH力士樂導軌滑塊R162279420

REXROTH力士樂導軌滑塊R162279422

REXROTH力士樂導軌滑塊R162271120

REXROTH力士樂導軌滑塊R162271220

REXROTH力士樂導軌滑塊R162271320

REXROTH力士樂導軌滑塊R162271420

REXROTH力士樂導軌滑塊R162271422

REXROTH力士樂導軌滑塊R162272120

REXROTH力士樂導軌滑塊R162272220

REXROTH力士樂導軌滑塊R162272320

REXROTH力士樂導軌滑塊R162272420

REXROTH力士樂導軌滑塊R162273120

REXROTH力士樂導軌滑塊R162273220

R162212320力士樂導軌滑塊REXROTH力士樂導軌技術要求：導軌的質量取決于它的制造精度和安裝精度，設計時應根據使用要求，制定出轉動導軌的若干技術條件，下列項目和數據可供參考： 

兩導軌面間的不平度一般為3微米； 

導軌不直度一般為10-15微米，準確的小于10微米。 

轉動體的直徑差，對于一般的導軌，全部轉動體的直徑差不大于2微米，每組轉動體的直徑差不大于1微米；對于準確導軌，全部轉動體的直徑差不大于1微米，每組轉動體的直徑差不大于0.5微米； 

滾柱的錐度在滾柱長度范圍內，大小端直徑差小于0.5-1微米； 

表面光潔度通常應刮研；在25?25厘米2內，其接觸斑點為20-25個點，準確的取上限，一般的取下限。

REXROTH力士樂導軌滑塊R165121420力士樂導軌滑塊滑塊現貨。

REXROTH力士樂導軌滑塊R165112320

REXROTH力士樂導軌滑塊R165112920

REXROTH力士樂導軌滑塊R165113920

REXROTH力士樂導軌滑塊R165119320

REXROTH力士樂導軌滑塊R165119420

REXROTH力士樂導軌滑塊R165111120

REXROTH力士樂導軌滑塊R165111220

REXROTH力士樂導軌滑塊R165111320

REXROTH力士樂導軌滑塊R165111420

REXROTH力士樂導軌滑塊R165111422

REXROTH力士樂導軌滑塊R165112120

REXROTH力士樂導軌滑塊R165112220

REXROTH力士樂導軌滑塊R165112320

REXROTH力士樂導軌滑塊R165112420

REXROTH力士樂導軌滑塊R165113120

REXROTH力士樂導軌滑塊R165113220

REXROTH力士樂導軌滑塊R165121920

REXROTH力士樂導軌滑塊R165122920

REXROTH力士樂導軌滑塊R165123920

REXROTH力士樂導軌滑塊R165129320

REXROTH力士樂導軌滑塊R165129420

REXROTH力士樂導軌滑塊R165121120

REXROTH力士樂導軌滑塊R165121220

REXROTH力士樂導軌滑塊R165121320

REXROTH力士樂導軌滑塊R165121420

REXROTH力士樂導軌滑塊R165122120

REXROTH力士樂導軌滑塊R165122220

REXROTH力士樂導軌滑塊R162273920

REXROTH力士樂導軌滑塊R162279320

REXROTH力士樂導軌滑塊R162279420

REXROTH力士樂導軌滑塊R162279422

REXROTH力士樂導軌滑塊R162271120

REXROTH力士樂導軌滑塊R162271220

REXROTH力士樂導軌滑塊R162271320

REXROTH力士樂導軌滑塊R162271420

REXROTH力士樂導軌滑塊R162271422

REXROTH力士樂導軌滑塊R162272120

REXROTH力士樂導軌滑塊R162272220

REXROTH力士樂導軌滑塊R162272320

REXROTH力士樂導軌滑塊R162272420

REXROTH力士樂導軌滑塊R162273120

REXROTH力士樂導軌滑塊R162273220

REXROTH力士樂導軌滑塊R162281920

REXROTH力士樂導軌滑塊R162282920

REXROTH力士樂導軌滑塊R162283920

REXROTH力士樂導軌滑塊R162289320

REXROTH力士樂導軌滑塊R162289322

REXROTH力士樂導軌滑塊R162289420

REXROTH力士樂導軌滑塊R162281120

REXROTH力士樂導軌滑塊R162281220

REXROTH力士樂導軌滑塊R162281320

REXROTH力士樂導軌滑塊R162281322

REXROTH力士樂導軌滑塊R162281420

REXROTH力士樂導軌滑塊R162281422

REXROTH力士樂導軌滑塊R162282120

REXROTH力士樂導軌滑塊R162282220

REXROTH力士樂導軌滑塊R162282320

REXROTH力士樂導軌滑塊R162282420

REXROTH力士樂導軌滑塊R162283120

REXROTH力士樂導軌滑塊R162283220

REXROTH力士樂導軌滑塊R1623系列

REXROTH力士樂導軌滑塊R162311920

REXROTH力士樂導軌滑塊R162312920

REXROTH力士樂導軌滑塊R162313920

REXROTH力士樂導軌滑塊R162319320

REXROTH力士樂導軌滑塊R162319420

REXROTH力士樂導軌滑塊R162311120

REXROTH力士樂導軌滑塊R162311220

REXROTH力士樂導軌滑塊R162311320

REXROTH力士樂導軌滑塊R162311420

REXROTH力士樂導軌滑塊R162312120

REXROTH力士樂導軌滑塊R162312220

REXROTH力士樂導軌滑塊R162312320

REXROTH力士樂導軌滑塊R162312420

REXROTH力士樂導軌滑塊R162313120

REXROTH力士樂導軌滑塊R162313220

REXROTH力士樂導軌滑塊R162321920

REXROTH力士樂導軌滑塊R162322920

REXROTH力士樂導軌滑塊R162323920

REXROTH力士樂導軌滑塊R162329320

REXROTH力士樂導軌滑塊R162329420

REXROTH力士樂導軌滑塊R162321120

REXROTH力士樂導軌滑塊R162321220

REXROTH力士樂導軌滑塊R162321320

REXROTH力士樂導軌滑塊R162321420

REXROTH力士樂導軌滑塊R162322120

REXROTH力士樂導軌滑塊R162322220

REXROTH力士樂導軌滑塊R162322320

REXROTH力士樂導軌滑塊R162322420

REXROTH力士樂導軌滑塊R162323120

REXROTH力士樂導軌滑塊R162323220

REXROTH力士樂導軌滑塊R162331920

REXROTH力士樂導軌滑塊R162332920

REXROTH力士樂導軌滑塊R162333920

REXROTH力士樂導軌滑塊R162339320

REXROTH力士樂導軌滑塊R162339420

REXROTH力士樂導軌滑塊R162331120

REXROTH力士樂導軌滑塊R162331220

REXROTH力士樂導軌滑塊R162331320

REXROTH力士樂導軌滑塊R162331420

REXROTH力士樂導軌滑塊R162332120

REXROTH力士樂導軌滑塊R162332220

REXROTH力士樂導軌滑塊R162332320

REXROTH力士樂導軌滑塊R162332420

REXROTH力士樂導軌滑塊R162333120

REXROTH力士樂導軌滑塊R162333220

REXROTH力士樂導軌滑塊R162341920

REXROTH力士樂導軌滑塊R162342920

REXROTH力士樂導軌滑塊R162343920

REXROTH力士樂導軌滑塊R162349320以上為現貨型號

R162212320力士樂導軌滑塊 直線導軌又稱線軌、滑軌、線性導軌、線性滑軌，用于直線往復運動場合，且可以承擔一定的扭矩，可在高負載的情況下實現高精度的直線運動。在大陸稱直線導軌，寶島一般稱線性導軌，線性滑軌。

直線導軌運動的作用是用來支撐和引導運動部件，按給定的方向做往復直線運動。依按摩擦性質而定，直線運動導軌可以分為滑動摩擦導軌、滾動摩擦導軌、彈性摩擦導軌、流體摩擦導軌等種類�！≈本�軸承主要用在自動化機械上比較多,像德國進口的機床,折彎機,激光焊接機等等,當然直線軸承和直線軸是配套用的。像直線導軌主要是用在精度要求比較高的機械結構上,直線導軌的移動元件和固定元件之間不用中間介質，而用滾動鋼球。

導軌的工作原理可以理解為是一種滾動導引，是由鋼珠在滑塊跟導軌之間無限滾動循環(huán)， 從而使負載平臺沿著導軌輕易的高精度線性運動，并將摩擦系數降至平常傳統(tǒng)滑動導引的五十分之一，能輕易地達到很高的定位精度�；瑝K跟導軌間末制單元設計，使線形導軌同時承受上下左右等各方向的負荷，專利的回流系統(tǒng)及精簡化的結構設計讓HIWIN的線性導軌有更平順且低噪音的運動。

滑塊-使運動由曲線轉變?yōu)橹本�。新的導軌系統(tǒng)使機床可獲得快速進給速度，在主軸轉速相同的情況下，快速進給是直線導軌的特點。直線導軌與平面導軌一樣，有兩個基本元件；一個作為導向的為固定元件，另一個是移動元件。由于直線導軌是標準部件，對機床制造廠來說．較好要做的只是加工一個安裝導軌的平面和校調導軌的平行度。當然，為了保證機床的精度，床身或立柱少量的刮研是必不可少的，在多數情況下，安裝是比較簡單的。作為導向的導軌為淬硬鋼，經精磨后置于安裝平面上。與平面導軌比較，直線導軌橫截面的幾何形狀，比平面導軌復雜，復雜的原因是因為導軌上需要加工出溝槽，以利于滑動元件的移動，溝槽的形狀和數量，取決于機床要完成的功能。例如：一個既承受直線作用力，又承受顛覆力矩的導軌系統(tǒng)，與僅承受直線作用力的導軌相比．設計上有很大的不同。

直線導軌系統(tǒng)的固定元件(導軌)的基本功能如同軸承環(huán)，安裝鋼球的支架，形狀為“v”字形。支架包裹著導軌的頂部和兩側面。為了支撐機床的工作部件，一套直線導軌至少有四個支架。用于支撐大型的工作部件，支架的數量可以多于四個。

機床的工作部件移動時，鋼球就在支架溝槽中循環(huán)流動，把支架的磨損量分攤到各個鋼球上，從而延長直線導軌的使用壽命。為了消除支架與導軌之間的間隙，預加負載能提高導軌系統(tǒng)的穩(wěn)定性，預加負荷的獲得．是在導軌和支架之間安裝超尺寸的鋼球。鋼球直徑公差為?20微米，以0.5微米為增量，將鋼球篩選分類，分別裝到導軌上，預加負載的大小，取決于作用在鋼球上的作用力。假如作用在鋼球上的作用力過大，經受預加負荷時間過長，導致支架運動阻力增強，就會出現平衡作用問題；為了提高系統(tǒng)的靈敏度，減少運動阻力，相應地要減少預加負荷