SP25M stylus performance guidelines

ISO 10360-2 test

Span (µm)

SM25 ISO 10360-2 

SS - stainless steel, CER - ceramic, GF - carbon fibre

ISO 10360-2 test - straight styli

Scanning module

Effective stylus reach

Actual M3 stylus used:
Length / tip Ø/ stem material

Radius error

RMS

SPAN

SM25-1

21 mm

21 mm / Ø4 mm / SS

-0.09 µm

0.15 µm

0.6 µm

SM25-1

50 mm

50 mm / Ø5 mm / CER

-0.09 µm

0.11 µm

0.4 µm

SM25-2

51 mm

21 mm / Ø4 mm / SS

-0.4 µm

0.15 µm

0.6 µm

SM25-2

105 mm

75 mm / Ø6 mm / GF

-0.26 µm

0.13 µm

0.5 µm

SM25-3

121 mm

21 mm / Ø4 mm / SS

-0.44 µm

0.14 µm

0.5 µm

SM25-3

200 mm

100 mm / Ø6 mm / GF

-0.19 µm

0.24 µm

0.9 µm

SM25-4

221 mm

21 mm / Ø5 mm / SS

0.1 µm

0.34 µm

1.3 µm

SM25-4

400 mm

200 mm / Ø8 mm / GF

0.4 µm

0.42 µm

1.8 µm

SM25-5

21 mm

21 mm / Ø4 mm / SS

-0.4 µm

0.12 µm

0.5 µm

SM25-5

105 mm

100 mm / Ø5 mm / CF

-0.37 µm

0.20 µm

0.68 µm

ISO 10360-2 test - cranked styli

Scanning module

Crank configuration

Actual M3 stylus used:
Length / tip Ø / stem material
(mounted to crank centre)

Radius error

RMS

SPAN

SM25-1

25 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.1 µm

0.48 µm

1.9 µm

SM25-1

25 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

-0.04 µm

0.56 µm

2.7 µm

SM25-1

55 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.15 µm

0.21 µm

1 µm

SM25-1

55 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.03 µm

0.34 µm

2 µm

SM25-2

55 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.54 µm

0.38 µm

1.3 µm

SM25-2

55 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.19 µm

0.61 µm

2.3 µm

SM25-2

55 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.07 µm

0.53 µm

1.7 µm

SM25-2

85 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.35 µm

0.34 µm

1.5 µm

SM25-2

85 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.05 µm

0.23 µm

1.2 µm

SM25-2

85 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.09 µm

0.25 µm

0.9 µm

SM25-3

105 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.3 µm

0.41 µm

1.5 µm

SM25-3

105 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

-0.23 µm

0.31 µm

1.2 µm

SM25-3

105 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.66 µm

0.56 µm

2 µm

SM25-3

125 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.14 µm

0.28 µm

1 µm

SM25-3

125 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.12 µm

0.16 µm

0.7 µm

SM25-3

125 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0 µm

0.22 µm

0.8 µm

SM25-3

155 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.28 µm

0.25 µm

0.9 µm

SM25-3

155 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.06 µm

0.15 µm

0.5 µm

SM25-3

155 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.04 µm

0.1 µm

0.4 µm

SM25-4

205 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.01 µm

0.24 µm

0.9 µm

SM25-4

205 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.19 µm

0.21 µm

1 µm

SM25-4

205 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

-0.11 µm

0.28 µm

1.1 µm

SM25-4

225 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.01 µm

0.21 µm

1.2 µm

SM25-4

225 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.18 µm

0.29 µm

1.1 µm

SM25-4

225 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.05 µm

0.3 µm

1.3 µm

SM25-4

255 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

-0.07 µm

0.25 µm

1 µm

SM25-4

255 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.1 µm

0.34 µm

1.1 µm

SM25-4

255 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

-0.1 µm

0.21 µm

0.9 µm

Test setup criteria

Test site

Renishaw UK

Styli used

Renishaw's M3 stylus range

CMM specification

U3 = 0.48 µm + L / 1000

CMM controller

Renishaw's UCC2

Probe calibration

Renishaw's third order polynomial calibration method

Data filter used

Harmonic simple cut off order = 60 UPR (undulations per revolution)

Artefacts used

Ø25 mm (nom) calibration sphere (for the ISO 10360 Part 2 / Part 4 tests)
Ø50 mm (nom) ring gauge (for the ring gauge scan tests)

Scanning speed

5 mm/s (for the ISO 10360 Part 4 and ring gauge scan tests)

Touch speed

5 mm/s (for the ISO 10360 Part 2 tests)

Back off speed

1 mm/s (for the ISO 10360 Part 2 tests)

Bi-directional scans

The effect of probe misalignment and contact friction will result in radius changes with scanning direction if a suitable calibration procedure is not used.

Mechanical hysteresis within a probe mechanism is best demonstrated by a bi-directional scan.

Therefore, Renishaw have decided to take the high integrity approach of quoting ring gauge metrology using bi-directional scan data to demonstrate the performance of the Renishaw probe and calibration method.

ISO 10360-4 test

Filtered MPETHN (60 UPR µm)

SM25 ISO 10360-4 filtered 

SS - stainless steel, CER - ceramic, GF - carbon fibre

ISO 10360-4 test - straight styli

Scanning module

Effective stylus reach

Actual M3 stylus used:
Length / tip Ø/ stem material

ISO MPETHN data raw

ISO MPETHN data filtered

ISO Diff data raw

ISO Diff data filtered

Stylus tip deflection

Time taken

SM25-1

21 mm

21 mm / Ø4 mm / SS

1.4 µm

0.9 µm

0.8 µm

0.5 µm

0.2 mm

1' 07"

SM25-1

50 mm

50 mm / Ø5 mm / CER

1.5 µm

0.7 µm

0.8 µm

0.4 µm

0.2 mm

1' 08"

SM25-2

51 mm

21 mm / Ø4 mm / SS

1.5 µm

0.9 µm

0.8 µm

0.5 µm

0.2 mm

1' 07"

SM25-2

105 mm

75 mm / Ø6 mm / GF

1.6 µm

0.9 µm

0.9 µm

0.5 µm

0.2 mm

1' 14"

SM25-3

121 mm

21 mm / Ø4 mm / SS

1.9 µm

1.1 µm

1.0 µm

0.6 µm

0.2 mm

1' 07"

SM25-3

200 mm

100 mm / Ø6 mm / GF

3.2 µm

1.6 µm

2.1 µm

1.0 µm

0.2 mm

1' 16"

SM25-4

221 mm

21 mm / Ø5 mm / SS

2.8 µm

1.7 µm

1.5 µm

0.9 µm

0.2 mm

1' 14"

SM25-4

400 mm

200 mm / Ø8 mm / GF

6.4 µm

3.5 µm

3.7 µm

0.9 µm

0.2 mm

1' 17"

SM25-5

21 mm

21 mm / Ø4 mm / SS

2.1 µm

0.9 µm

1.1 µm

0.5 µm

0.2 mm

1' 08"

SM25-5

105 mm

100 mm / Ø5 mm / CF

2.8 µm

1.5 µm

1.5 µm

1.0 µm

0.2 mm

1' 14"

ISO 10360-4 - cranked styli

Scanning module

Crank configuration

Actual M3 stylus used:
Length / tip Ø / stem material
(mounted to crank centre)

ISO MPETHN data raw

ISO MPETHN data filtered

ISO Diff data raw

ISO Diff data filtered

Stylus tip deflection

Time taken

SM25-1

25 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

3.1 µm

2.4 µm

1.7 µm

1.2 µm

0.2 mm

1' 11"

SM25-1

55 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

4.8 µm

1.4 µm

2.4 µm

0.8 µm

0.2 mm

1' 09"

SM25-2

55 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

2.5 µm

2 µm

1.5 µm

1.3 µm

0.2 mm

1' 09"

SM25-2

85 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

2.8 µm

1.6 µm

1.7 µm

1 µm

0.2 mm

1' 08"

SM25-3

105 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

1.8 µm

1.2 µm

1.2 µm

0.8 µm

0.2 mm

1' 12"

SM25-3

105 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

2.3 µm

1.7 µm

1.3 µm

1 µm

0.2 mm

1' 12"

SM25-3

125 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

2.1 µm

1.3 µm

1.2 µm

0.8 µm

0.2 mm

1' 12"

SM25-3

125 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

2.2 µm

1.2 µm

1.3 µm

0.7 µm

0.2 mm

1' 11"

SM25-3

155 mm 'down' 28mm 'out'

21 mm / Ø4 mm / SS

2.7 µm

1.4 µm

1.9 µm

1.2 µm

0.35 mm

1' 16"

SM25-3

155 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

2.6 µm

1.7 µm

1.7 µm

1.1 µm

0.35 mm

1' 16"

SM25-4

205 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

3 µm

2.2 µm

1.7 µm

1.3 µm

0.2 mm

1' 11"

SM25-4

205 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

2.6 µm

1.7 µm

1.8 µm

1.2 µm

0.2 mm

1' 17"

SM25-4

225 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

3.2 µm

2.6 µm

2.0 µm

1.9 µm

0.2 mm

1' 16"

SM25-4

225 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

4.6 µm

3.8 µm

3.5 µm

3.2 µm

0.2 mm

1' 25"

SM25-4

255 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

5 µm

4.1 µm

3 µm

2.6 µm

0.2 mm

1' 10"

SM25-4

255 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

8.3 µm

5 µm

4.9 µm

2.7 µm

0.2 mm

1' 10"

Test setup criteria

Test site

Renishaw UK

Styli used

Renishaw's M3 stylus range

CMM specification

U3 = 0.48 µm + L / 1000

CMM controller

Renishaw's UCC2

Probe calibration

Renishaw's third order polynomial calibration method

Data filter used

Harmonic simple cut off order = 60 UPR (undulations per revolution)

Artefacts used

Ø25 mm (nom) calibration sphere (for the ISO 10360 Part 2 / Part 4 tests)
Ø50 mm (nom) ring gauge (for the ring gauge scan tests)

Scanning speed

5 mm/s (for the ISO 10360 Part 4 and ring gauge scan tests)

Touch speed

5 mm/s (for the ISO 10360 Part 2 tests)

Back off speed

1 mm/s (for the ISO 10360 Part 2 tests)

Bi-directional scans

The effect of probe misalignment and contact friction will result in radius changes with scanning direction if a suitable calibration procedure is not used.

Mechanical hysteresis within a probe mechanism is best demonstrated by a bi-directional scan.

Therefore, Renishaw have decided to take the high integrity approach of quoting ring gauge metrology using bi-directional scan data to demonstrate the performance of the Renishaw probe and calibration method.

Bi-directional ring gauge

Filtered span (60 UPR µm)

SM25 bi-directional ring gauge filtered span

SS - stainless steel, CER - ceramic, GF - carbon fibre

Bi-directional ring gauge scan test - straight styli

Scanning module

Effective stylus reach

Actual M3 stylus used:
Length / tip Ø/ stem material

RMS data raw

RMS data filtered

SPAN data raw

SPAN data filtered

Stylus tip deflection

Raw data pts

SM25-1

21 mm

21 mm / Ø4 mm / SS

0.23 µm

0.19 µm

1.5 µm

0.9 µm

0.35 mm

2857

SM25-1

50 mm

50 mm / Ø5 mm / CER

0.24 µm

0.17 µm

1.5 µm

0.9 µm

0.2 mm

2794

SM25-2

51 mm

21 mm / Ø4 mm / SS

0.24 µm

0.21 µm

1.6 µm

1.2 µm

0.2 mm

2858

SM25-2

105 mm

75 mm / Ø6 mm / GF

0.24 µm

0.18 µm

2.0 µm

1.1 µm

0.2 mm

2609

SM25-3

121 mm

21 mm / Ø4 mm / SS

0.38 µm

0.20 µm

2.2 µm

1.3 µm

0.2 mm

2857

SM25-3

200 mm

100 mm / Ø6 mm / GF

0.38 µm

0.27 µm

4.1 µm

1.7 µm

0.2 mm

2484

SM25-4

221 mm

21 mm / Ø5 mm / SS

0.40 µm

0.30 µm

3.0 µm

1.7 µm

0.2 mm

2462

SM25-4

400 mm

200 mm / Ø8 mm / GF

0.80 µm

0.50 µm

5.7 µm

2.7 µm

0.2 mm

2388

SM25-5

21 mm

21 mm / Ø4 mm / SS

0.21 µm

0.18 µm

2.1 µm

1.0 µm

0.2 mm

2831

SM25-5

105 mm

100 mm / Ø5 mm / CF

0.48 µm

0.28 µm

4.2 µm

1.6 µm

0.2 mm

2643

Bi-directional ring gauge scan test - cranked styli

Scanning module

Crank configuration

Actual M3 stylus used:
Length / tip Ø / stem material
(mounted to crank centre)

RMS data raw

RMS data filtered

SPAN data raw

SPAN data filtered

Stylus tip deflection

Raw data points

SM25-1

25 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.26 µm

0.19 µm

1.9 µm

0.9 µm

0.2 mm

2858

SM25-1

25 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.62 µm

0.56 µm

6 µm

3.2 µm

0.2 mm

2794

SM25-1

55 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.28 µm

0.16 µm

3 µm

1 µm

0.2 mm

2868

SM25-1

55 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.36 µm

0.24 µm

4.9 µm

1.6 µm

0.2 mm

2796

Scanning module

Crank configuration

Actual M3 stylus used:
Length / tip Ø / stem material
(mounted to crank centre)

RMS data raw

RMS data filtered

SPAN data raw

SPAN data filtered

Stylus tip deflection

Raw data points

SM25-2

55 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.6 µm

0.56 µm

3.1 µm

2.3 µm

0.2 mm

2858

SM25-2

55 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.33 µm

0.26 µm

2.8 µm

1.5 µm

0.2 mm

2857

SM25-2

55 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.55 µm

0.47 µm

4.1 µm

2.4 µm

0.35 mm

2733

SM25-2

85 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.35 µm

0.24 µm

4.5 µm

1.9 µm

0.2 mm

2858

SM25-2

85 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.45 µm

0.36 µm

3 µm

1.7 µm

0.2 mm

2795

SM25-2

85 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.75 µm

0.6 µm

6.1 µm

3.6 µm

0.2 mm

2734

SM25-3

105 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.4 µm

0.35 µm

2.3 µm

1.7 µm

0.2 mm

2858

SM25-3

105 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.44 µm

0.38 µm

2.7 µm

1.8 µm

0.2 mm

2858

SM25-3

105 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.42 µm

0.36 µm

3 µm

1.8 µm

0.2 mm

2733

SM25-3

125 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.47 µm

0.42 µm

2.7 µm

1.8 µm

0.2 mm

2856

SM25-3

125 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.47 µm

0.35 µm

2.7 µm

1.8 µm

0.2 mm

2856

SM25-3

125 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.55 µm

0.46 µm

3.5 µm

2.1 µm

0.35 mm

2732

SM25-3

155 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.38 µm

0.31 µm

2.6 µm

1.5 µm

0.2 mm

2858

SM25-3

155 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.37 µm

0.27 µm

2.9 µm

1.3 µm

0.2 mm

2858

SM25-3

155 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

1.01 µm

0.69 µm

11.8 µm

3.5 µm

0.2 mm

2734

Scanning module

Crank configuration

Actual M3 stylus used:
Length / tip Ø / stem material
(mounted to crank centre)

RMS data raw

RMS data filtered

SPAN data raw

SPAN data filtered

Stylus tip deflection

Raw data points

SM25-4

205 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.45 µm

0.38 µm

2.6 µm

2 µm

0.2 mm

1439

SM25-4

205 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.38 µm

0.26 µm

2.5 µm

1.5 µm

0.2 mm

1440

SM25-4

205 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.51 µm

0.34 µm

4.2 µm

2.2 µm

0.2 mm

1376

SM25-4

225 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.41 µm

0.32 µm

2.7 µm

1.8 µm

0.2 mm

1438

SM25-4

225 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.42 µm

0.3 µm

2.6 µm

2.7 µm

0.2 mm

1438

SM25-4

225 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.65 µm

0.48 µm

5.1 µm

2.4 µm

0.35 mm

2731

SM25-4

255 mm 'down' 28 mm 'out'

21 mm / Ø4 mm / SS

0.67 µm

0.59 µm

3.6 µm

2.5 µm

0.2 mm

2858

SM25-4

255 mm 'down' 57.5 mm 'out'

50 mm / Ø5 mm / CER

0.69 µm

0.55 µm

5.9 µm

2.8 µm

0.2 mm

2794

SM25-4

255 mm 'down' 83 mm 'out'

75 mm / Ø6 mm / GF

0.99 µm

0.75 µm

8.5 µm

3.9 µm

0.2 mm

2730

Test setup criteria

Test site

Renishaw UK

Styli used

Renishaw's M3 stylus range

CMM specification

U3 = 0.48 µm + L / 1000

CMM controller

Renishaw's UCC2

Probe calibration

Renishaw's third order polynomial calibration method

Data filter used

Harmonic simple cut off order = 60 UPR (undulations per revolution)

Artefacts used

Ø25 mm (nom) calibration sphere (for the ISO 10360 Part 2 / Part 4 tests)
Ø50 mm (nom) ring gauge (for the ring gauge scan tests)

Scanning speed

5 mm/s (for the ISO 10360 Part 4 and ring gauge scan tests)

Touch speed

5 mm/s (for the ISO 10360 Part 2 tests)

Back off speed

1 mm/s (for the ISO 10360 Part 2 tests)

Bi-directional scans

The effect of probe misalignment and contact friction will result in radius changes with scanning direction if a suitable calibration procedure is not used.

Mechanical hysteresis within a probe mechanism is best demonstrated by a bi-directional scan.

Therefore, Renishaw have decided to take the high integrity approach of quoting ring gauge metrology using bi-directional scan data to demonstrate the performance of the Renishaw probe and calibration method.