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PH20
PH20 - a dramatic impact on inspection timescales, capability and flexibility
PH20 brings 5-axis measurement capability to touch-trigger applications on all sizes of CMM
- Increased throughput - up to 3x faster than indexing heads
- Easy access to features at any angle with infinite positioning
- Faster calibration
- Integral industry standard TP20 probe
- Improved touch-trigger metrology performance
- Available on new CMMs or as a retrofit
Increased CMM throughput
- Unique 'head touches' allow measurement points to be taken using only the head and not the CMM structure
- 5-axis controlled motion between features eliminates indexing time
- Together, these speed increases result in a typical 3-fold improvement in throughput
Easy access to features at any angle

- Infinite positioning capability guarantees optimal feature access,
minimising stylus changes, especially when probe-extension
clearance is small - 5-axis simultaneous motion allows larger parts to be measured
on the CMM by minimising the space required around the part
for head rotation - PH20 automatically aligns itself with the part coordinate system,
avoiding stylus collisions and the requirement for accurate
fixtures
Faster calibration
- Unique 'inferred calibration' technique determines the head orientation and probe position in a single operation, allowing subsequent measurement at any head angle
- Dramatic time savings accumulate as the calibration process is repeated on a regular basis to comply with quality procedures or following a probe crash
- Enhanced metrology performance is also available by calibrating the probe tip at the feature orientation
PH20 system
- Integral TP20 probe mount to optimise working volume of CMM
- Compatible with the existing range of proven TP20 probe modules: wide selection of trigger forces, directional sensing options and extensions to meet application requirements*
- Detachable modules provide crash protection
- Modules can be changed automatically using the TCR20 change rack
* Except for the extended force module
Improved touch-trigger metrology performance
- Repeatability is improved when 'head touch' method is used
- Accuracy is improved by using feature orientation based calibration and 'head touches'
- Pre-travel variation is automatically compensated
- Module changing – automatic tip offset correction
Available with your new CMM or as retrofit to existing equipment
- Compact design – suitable for a wide range of CMMs using shank or quill mounting
- Renishaw CMM controller – I++DME communication, wide selection of metrology software
- Index head compatibility – no requirement to modify existing programs in the majority of cases
- Integral TP20 probe – allows re-use of existing equipment
- Mechanical bearings – no air supply required
Hardware integration
- The PH20 system is only available with the UCC T5 controller
- SPA3 is a servo power amplifier used to power the CMM
- MCUlite-2 / MCU5 / MCU5-2 / MCU W / MCU W-2 are the multi-function hand control units available for use with the PH20 system
Dimensions
Dimensions in mm (inches)

Dimension 'A' | |
Standard force module | 21 mm (0.83 in) |
Medium force module | 21 mm (0.83 in) |
Low force module | 21 mm (0.83 in) |
6-way module | 25 mm (0.98 in) |
EM1 module | 71 mm (2.80 in) |
EM2 module | 96 mm (3.78 in) |
Head axis range
The PH20 head has two rotary axes (A and B) and is normally mounted on the CMM quill to create a 5-axis measuring system.
The PH20 head's B-axis is mounted on the CMM quill and can rotate continuously in both directions.
The A-axis, which is orthogonal to the B-axis, has ±115° of travel.
The head can only be mounted in the vertical orientation shown below.

Recommended range of stylus lengths for use on PH20

Specification
ISO 10360-5 (2001) typical performance using a std force module with 12 × 4 mm stylus on a CMM with ISO 10360-2 (2002) specification of 0.48 + L/1000 (specified with a TP7) | CMM touch | Head touch |
Size | 0.0006 mm (0.00002 in) | 0.0002 mm (0.00001 in) |
Form | 0.0026 mm (0.00010 in) | 0.0024 mm (0.00009 in) |
Location | 0.0013 mm (0.00005 in) | 0.0009 mm (0.00003 in) |
Weight (excluding module and cables) | 810 g (28.6 oz) |
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Operating temperature range | 15 °C to 35 °C (59 °F to 95 °F) |
Storage temperature range | -25 °C to 70 °C (-13 °F to 158 °F) |
Maximum movement speed | 3 revs/s (1281 mm/s with standard module and 10 mm stylus) |
Maximum head touch speed | 50 mm/s |
A-axis rotation angle | -115° to 115° |
B-axis rotation angle | Infinite positioning |
Angular resolution | 0.4 µRadians (0.04 µm/100 mm) |
Bearings | Mechanical |
Change rack system | TCR20 |
Joystick | MCUlite-2 / MCU5 / MCU5-2 / MCU W / MCU W-2 |
Flyers and brochures
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Brochure: PH20 - The new 5-axis touch-trigger system
PH20 is another innovative measurement product from Renishaw that transforms co-ordinate measuring machine (CMM) performance. For the first time, 5-axis technology developed for the multi-award winning REVO® measurement system is available for touch-trigger applications on all sizes of CMM.
Data sheets
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Data sheet: PH20
PH20 is a dynamic measuring probe head which delivers a 3-fold increase in measurement throughput whilst maintaining high system accuracy.
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Data sheet: TCR20
TCR20 module change rack for PH20
Installation and user's guides
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Installation & user's guide: PH20
Installation documentation for Renishaw's 5-axis technology measurement system for touch-trigger applications on all sizes of CMM.
Case studies
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Case study: FGP Precision Engineering - Aiming high for quality and growth
Dorset based FGP Precision Engineering Ltd. has its sights set on becoming one of the UK’s top suppliers to the world’s aerospace OEMs.
Videos
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PH20 show reel
Rapid touch-trigger measurement, infinite positioning and 5-axis technology
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PH20 v PH10 with feature count
PH20 v PH10 with feature count demonstrating 3x greater measurement speed of 5-axis movement
Part number | |
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PH20 system kits | |
PH20 system kit 1 (includes: 1 × PH20, 1 × UCC T5, 1 × SPA3, 1 × 48 V - 58 V PSU - MCU joystick must be ordered separately) | A-5518-1091 |
PH20 system kit 2 (includes 1 × PH20, 1 × UCC T5, 1 × SPA3 (no PSU) - MCU joystick must be ordered separately) | A-5518-1092 |
PH20 rack | |
TCR20 kit | A-1371-1001 |
PH20 quill and shank adaptors | |
Shank adaptor | A-3007-1715 |
Small quill adaptor (60 mm x 60 mm) | A-3007-1716 |
Large quill adaptor (80 mm x 80 mm) | A-3007-1717 |
LH87 quill adaptor | A-3007-1718 |
LH54/65 quill adaptor | A-3007-1719 |
MQ quill adaptor | A-3007-1720 |
Aberlink quill adaptor | A-3007-1721 |
PH20 accessories | |
15 m cable for use with PH20 and REVO | A-5669-0015 |
25 m cable for use with PH20 and REVO | A-5759-0025 |
Head Comms Signal Booster (HCSB) | A-5669-0080 |