Thielenhaus Microfinish | Sphero Superfinishing machine

Microfinish / Superfinish for balls and sockets with the Thielenhaus Sphero

Sphero is the Thielenhaus platform for the flexible machining of spherical parts. When machining with Sphero you not only achieve an optimal surface, but also a perfect form.


With the work piece spindle which can be swivelled up to 90° as well as the force-controlled work piece spindle, work pieces can be machined with the highest degree of process reliability. Surface precision machining with ceramic or metallic parts minimises the surface roughness and simultaneously improves its geometry. This ensures a better seat, e.g. for ball joints, as well as a reduction in friction and wear and tear.


  • Compact, ergonomic design
  • Automatic tool changer with precision tool mount
  • Microfinish unit with MicroSens force control for process control, incision detection and tool wear and tear compensation
  • User-friendly monitor menu guide with individual work piece programme memory
  • In-process measurement control for diameter


Technical data:

  • Machining diameter: up to 75 mm
  • Work piece spindle: 0 – 2,000 min-¹
  • Tool spindle: 1,500 – 15,000 min-¹
  • Tool changer: up to 10 tools
Parts Roundness   Roughness
Endoprosthesis (ball and socket) 1 – 2 µm Ra ≤ 0,02 µm
Vertebral implant    2,0 µm Ra ≤ 0,03 µm
>Spheres on axial piston pumps    2,5 µm Ra ≤ 0,08 µm
Spherical shim disc 2,0 µm Ra ≤ 0,03 µm
Slide shoes 2,5 µm Ra ≤ 0,08 µm
Ball joint 3-6 µm Ra ≤ 0,04 µm
Ball valve and seat 2-4 µm Ra ≤ 0,03 µm




Thielenhaus Sales Department
Phone: +1 248-347-1611

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