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Rollers for Crossed Roller Linear Guides
Special production items include extremely high quality rollers, used in crossed-roller linear guides, characterised by a length slightly less than the diameter and by the main technical characteristics given below:
  • diameter superfinish with a roughness less than Ra 0.04µ
  • diameter selection in groups of 1µ
  • orthogonality error Max 4µ
  • planarity error Max 3µ
  • circularity error Max 0.5µ
Typical sizes produced are:
3 x 2.8, 6 x 5.8, 9 x 8.8, 12 x 11.8
Rollers for Fifth Wheels
The rollers used in fifth wheels are also characterized by a length which is less than the diameter and whose technical characteristics are specified by clients. Typical sizes produced are:
10 x 9.5, 15 x 14.5, 20 x 19.5, 25 x 24.5, 30 x 29.5, 35 x 34.5, 45 x 44.4, 50 x 49.4
Rollers for Automotive and Hydraulic Fuel Actuators
To remain in the range of high quality and specialty products, rollers for the automotive and hydraulic fuel actuators have the following characteristics:
  • connection between plane and diameter ranging from 0.05 e 0.1mm
  • orthogonality error Max 4µ
  • planarity error Max 3µ

Typical sizes produced are:
5 x 4, 5 x 5, 5 x 6, 5.5 x 6, 16 x 14.26, 16 x 17.64, 16 x 23.36, 16 x 28.05, 16 x 35.04, 16 x 43.75, 16 x 55.03, 16 x 69.75
Rollers for Electric Micromotors
Production of special items includes small shafts for electric micromotors which are cylindrical, with flat ends and radii well connected with the diameter so as to allow a perfect insertion into the rotor, hardened to HRC 60/65 and precision-ground to the diameter tolerances required by the client.
A parallel knurled edge, up to 72mm, with an average width of 5mm, 3 or 4mm from the end is available.
Diameter (mm) Length (mm)
50 53 55 58 60 62 65 67 70 72 73.5 75 78 80 82 85 90 95
4 X X X X X X X X X X X X X X X X X X
5 X X