Note 1: see the Specifications tab for standard sizes and lengths
Example of combinations
90°V surface
Flat surface
Model No.
Roller diameterDa
Model No.
Roller diameterDa
FTW 4030V
2.828
FT 4030
4
FTW 4030V
2.828
FT 4035
4
FTW 5035V
3.535
FT 5038
5
FTW 5035V
3.535
FT 5043
5
FTW 5045
5
FT 10060V
7.071
FTW 5050
5
FT 10060V
7.071
FTW 10070V
7.071
FT 10080
10
Note) The roller diameter (Da) for model numbers
containing symbol V at the end represents the
value 1/√2 times that of types for the same model
number with no symbol.
The diameter of the roller to be combined with
90°V surface will be 1/√2 times that of the roller on
the flat surface.
For example, when using model FT4035 (roller
diameter: Ø4) on the flat surface, use model
FTW4030V (roller diameter: Ø2.828) on the V
surface. Performance of the Flat Roller is
significantly affected by the contact state of the
upper and lower raceways. You can check the fit
before installing the Flat Roller by designing the
raceways as indicated in the figure above.