Renishaw is introducing the PH20 PLUS 5-axis touch-trigger system for coordinate measuring machines (CMMs), a direct replacement for its established PH20 head. The new system offers an over 50% increase in inspection reach compared to the original PH20, significantly improving access to features deep inside parts and in hard-to-reach areas.

Replacing a Proven Platform

The PH20 touch-trigger system, launched in 2010, utilizes head motion technology developed for the REVO® 5-axis measurement system. The PH20 PLUS variant builds on this technology, offering an extension of a measurement approach already familiar to CMM programmers.

The key mechanical change is a redesigned kinematic mount that supports longer probe configurations. This enables the head to run longer and heavier setups, and the PH20 PLUS head provides a maximum working length of up to 300 mm from the centre of the A-axis when fitted with a 50 mm stylus — an increase of over 50% and an additional 107 mm of reach.

Compatibility as a Design Requirement

The PH20 PLUS system maintains compatibility with the existing range of TP20 modules, and existing TP20 probe modules can be used via the PB20 adaptor. This design choice allows existing users to adopt the new head while reusing existing part programmes and measurement strategies, which is beneficial for shops with validated routines.

"With PH20 PLUS, we've focused on extending capability which we think will appeal to both existing PH20 customers and those with measurement requirements which could previously not be met by the existing head," said Nathan Fielder, Product Manager at Renishaw.

New PE20 modules feature a larger kinematic mount for direct interface with the PH20 PLUS head, providing users with a path to purpose-built longer configurations.

Rack and Integration Details

The PH20 PLUS system includes a new modular rack system for automated probe module changing. The rack mounts to an MRS2 rail and includes configurable change ports for TP20 modules, temperature-controlled ports for PE20 modules, and connector modules to distribute power. The powered PH20 PLUS PCR20 rack provides a standalone solution for holding multiple modules and accessories.

On the control side, the PH20 PLUS system is fully compatible with Renishaw's UCC controller and integrates in the same way as the original PH20 — a drop-in replacement in practice.

Seeing It in Person

Visitors to IMTS 2026 will be able to see the PH20 PLUS 5-axis touch-trigger system demonstrated on the booths of various CMM manufacturers, and Renishaw staff will be on hand to discuss the new product at the Quality Assurance booths 134314 and 134524.

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