If the guideway set length required is greater than lmax, or if joined guideways are required, these guideways are made up from individual pieces that together comprise the total required length. The individual pieces are matched to each other and marked. The pitch is always centrally located between the fixing holes.

Marking of multi-piece guideways
 Locating face ·
 Marking
Guideway segments:
1A, 1A  1B, 1B  1C, 1C
2A, 2A  2B, 2B  2C, 2C

Positional and length tolerances of guideways

The positional tolerances are not dependent on the guideway length.

Positional and length tolerances of guideways
Length tolerances of guideways

Length tolerance

Dependent on guideway length l

Multi-piece guideways

mm

mm

≦ 1 000

1 000 – 3 000

＞ 3 000

–1

–1,5

±0,1%
of guideway length

±3
over total length

Segments for multi-piece guideways

Guideway length**

Maximum permissible number of segments

mm

＜

3 000

2

 

3 000

–

4 000

3

 

4 000

–

6 000

4

＞

6 000

4 plus 1 segment each of 1 500 mm
above 6 000 mm guideway length

**Minimum length of one segment = 600 mm.