Coordinate Measuring Machines
Additional rotary axis for high precision co-ordinate measurement machines
Precision rotary axes specifically developed to increases the flexibility, productivity and efficiency of your CMM.
Typical applications include:
- Increase your CMM’s application range and effective measuring volume, flexibility, productivity and efficiency. Significantly reduce inspection times.
- Simplify the measurement of symmetrical or prismatic components such as camshafts, crankshaft, gears and aircraft engines.
- Scanning or touch probe applications.
- Simplifying your measuring procedures and part programming.
- Stylus configurations become easier with fewer stylus systems required.
- Travel paths are shorter leading to reduction in temperature influences.
Why choose RPI?
Simple Integration – Direct to host CMM controller or 3rd Party interface via RPI’s QuadMotion controller.
Extensive Range – Sizes range from Ø200mm to Ø4000mm and can be used horizontally or vertically offering maxim flexibility and versatility.
Compact Design – Specifically designed with the lowest possible profile to reduce the impact on your CMM’s measurement volume.
Pioneers – In it from the very start! First installation carried out at Ferranti in 1977.
Widespread Adoption – Our products have been adopted by world’s leading CMM manufacturers.
International Support – World-wide installations supported by our expert service team.

Measurement Capacity:
- Horizontal or vertical applications
- Sizes Ø250 mm, Ø300 mm, and Ø400 mm
- Overall height 195 mm (axis vertical)
- Centreline height 240 mm (axis horizontal)
- Load capacities up to 1,000 kgs
- Load moment up to 500 Nm
- Powerful pneumatic clamp (optional)
- Angular accuracy 2 arc seconds

Measurement Capacity:
- Sizes Ø400 mm, Ø600 mm, Ø800 mm and Ø1000 mm
- Overall height between 1 and 2 mm (submerged in granite)
- Load capacities up to 5,000 kgs
- Zero backlash drive
- Angular accuracy 2 arc seconds

Measurement Capacity:
- Size Ø200 mm
- Vertical or Horizontal axis
- Load capacities up to 100 kgs or 25 Nm
- Rotation speed 10 rpm
- Zero backlash drive
- Angular accuracy 2 arc seconds

Measurement Capacity:
- Horizontal or vertical applications
- Table top size Ø100, Ø150 and Ø200 mm
- Load capacities up to 100 kgs
- Tilt moment up to 10 Nm
- Angular accuracy 10 arc seconds

Measurement Capacity:
- Size Ø100 mm and Ø200 mm
- Two axis
- Load capacities up to 20kgs or 20Nm
- Rotation speed 18 rpm
- Zero backlash drive
- Angular accuracy 2 and 5 arc seconds

Measurement Capacity:
- Sizes Ø400 mm, Ø600 mm, Ø800 mm, Ø1000 mm and Ø1500 mm
- Overall height 150 mm, 160 mm and 200 mm
- Load capacities up to 7,000 kgs
- Zero backlash drive
- Angular accuracy 2 arc seconds