• Accuracy of guideways LFS

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Accuracy of guideways LFS

Data on the straightness, parallelism (differential measurement), length and positional tolerances of guideways are given in the following tables and figures, Figure 1 to Figure 5.

The guideways are precision straightened and the tolerances are better than DIN EN 12 020.

Length tolerance

L Tolerance  mm  mm Single-piece guideways   L ＜ 1 000 ±2 1 000 ≦ L ＜ 2 000 ±3 2 000 ≦ L ＜ 4 000 ±4 4 000 ≦ L ±5 Multi-piece guideways Total length L ±0,1%

Straightness tolerance of guideways

Length of guideway t1 (contact face) t2 (lateral)  mm  mm   L ＜ 1 000 0,5 0,2 1 000 ≦ L ＜ 2 000 1 0,3 2 000 ≦ L ＜ 3 000 1,5 0,4 3 000 ≦ L ＜ 4 000 2 0,5 4 000 ≦ L ＜ 5 000 2,5 0,6 5 000 ≦ L ＜ 6 000 3 0,7 6 000 ≦ L ＜ 7 000 3,5 0,8 7 000 ≦ L ＜ 8 000 4 0,9

Concave Figure 1 Tolerances for guideways LFS, LFS..-C, LFS..-R, LFS..-N, LFS..-NZZ

Contact face indicated by slot  Concave Figure 2 Guideway LFS..-F

Parallelism determined by differential measurement  Concave Figure 3 Guideway LFS120

Parallelism determined by differential measurement  Concave Figure 4 Guideway LFS..-M

Contact face indicated by slot  Concave Figure 5 Guideways LFS..-FH and LFS..-CH

Tolerance for h4

Tolerances for H2 and h4 are shown in the table, Figure 6 and Figure 7.

Guideway   H2 h4 mm mm LFS20 +0,3 –0,1 LFS25 –0,1 LFS25-N –0,1 LFS25-M ±0,25 LFS32 +0,2 LFS32-C +0,2 LFS32-N +0,2 LFS32-F +0,1 LFS32-M ±0,25 LFS32-CH +0,2 LFS32-FH +0,1 LFS42-C +0,2 LFS42-FH +0,1 LFS52 +0,2 LFS52-C +0,2 LFS52-NZZ +0,2 LFS52-F +0,1 LFS52-M +0,5 LFS52-CH +0,2 LFS52-FH +0,1 LFS86-C +0,25 LFS120 +0,2

Tolerance for H2 = +0,3 mm  Figure 6 Reference dimension for accuracy, dimension H2

Figure 7 Reference dimension for accuracy, dimension h4

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