The world’s smallest wireless probe for machine tools

Precision part measurement in today’s high-value, space-constrained machining environments demands tools that are not only highly accurate but also compact enough to integrate seamlessly into the limited dimensions of modern CNC machines. Addressing this challenge head-on is the RMP24-micro—the world’s smallest wireless machine tool probe, designed to unlock new possibilities in precision micro-manufacturing.

Developed by Renishaw, a global leader in precision engineering and metrology technologies, the RMP24-micro delivers exceptional performance in an ultra-compact format. Measuring just 24 mm in diameter and 31.4 mm in length, it is tailored for applications where space, sensitivity, and accuracy are all critical. Industries such as medical device production, dental restoration, luxury watchmaking, and micro-mechanics—where even minor deviations can result in costly defects—will benefit from the probe’s advanced capabilities.

Compact Design, Powerful Performance

What sets the RMP24-micro apart is its remarkable repeatability of 0.35 µm (2σ), enabled by an internal micro-kinematic mechanism. This design ensures ultra-low trigger forces, allowing for gentle and precise probing of delicate or miniature workpieces. The result is enhanced measurement accuracy with minimal risk of part deflection or surface damage—a crucial advantage in sectors that demand tight tolerances and high traceability.

Far more than a scaled-down version of a conventional probe, the RMP24-micro is a purpose-built tool for modern manufacturing. Its short length and wireless capability make it ideal for multi-axis and small-footprint machines, where traditional wired or bulkier probes are not practical. Whether it’s used for automated part setup, in-cycle measurement, or quality verification, it supports high repeatability and efficiency—even in low-volume or custom production runs.

Proven Performance in the Field

The RMP24-micro is already making an impact on shop floors. CHIRON Group SE (Germany), a leading manufacturer of high-precision machining centers, integrates the probe into its Micro5 machine to great effect.

“Renishaw's RMP24-micro plays a pivotal role in the functionality of our Micro5 machine, contributing to the success of our customer's machining process. Its tiny batteries and compact size mean it easily fits into the Micro5's tool magazine, offering a superior alternative to our previous methods of part verification and set-up.”
— CHIRON Group SE

This practical endorsement underscores the probe’s real-world value—not just in terms of performance, but also in how seamlessly it integrates into advanced, space-limited systems.

Advanced Wireless Communication for Modern Shops

To ensure seamless integration into digital manufacturing environments, the RMP24-micro features Renishaw’s latest radio transmission protocol, communicating with the machine tool controller via the RMI-QE interface. Operating on a 2.4 GHz frequency hopping spread spectrum (FHSS) signal, the system provides a robust and interference-resistant connection within a 5-meter range.

This technology allows the probe to operate reliably even in environments saturated with Wi-Fi, Bluetooth®, and industrial microwaves, while maintaining compliance with global radio regulations. It’s a wireless solution that ensures both flexibility and compatibility, supporting manufacturers operating across international sites.

Driving Smart Manufacturing in Micro-Precision

As part of Renishaw’s expanding portfolio of smart manufacturing solutions, the RMP24-micro plays a key role in enabling automation, process optimisation, and data-driven production. Its integration into small-footprint CNC setups facilitates closed-loop machining strategies, leading to faster part alignment, reduced scrap, and increased yield.

This level of digital readiness is becoming essential as manufacturers face ongoing pressures such as labour shortages, rising material costs, and increasing quality demands. With the RMP24-micro, companies can implement scalable digital workflows that support high-precision machining without compromising on efficiency or flexibility.

Positive Market Reception and Outlook

The launch has been met with enthusiastic feedback from early adopters. Will Fenn, Product Marketing Engineer at Renishaw’s Machine Tool Products Division, shared:

“Since we first previewed the RMP24-micro at EMO Hannover, the response has been phenomenal. We’ve received strong interest from manufacturers across multiple sectors who are excited by the possibilities this probe offers. Its compact size, precision, and wireless convenience make it a unique solution in the market.”

With full commercial availability now confirmed, Renishaw is set to showcase the RMP24-micro at industry events and technology showcases throughout 2024 and beyond, demonstrating how this compact innovation fits into larger digitalisation strategies.

Conclusion

The RMP24-micro marks a significant advancement in wireless probing technology for the metalworking industry. By combining ultra-compact design, robust wireless connectivity, and exceptional metrology performance, it empowers manufacturers to achieve new levels of precision—especially in industries where every micron counts. As proven in real-world applications like CHIRON’s Micro5, this miniature powerhouse sets a new benchmark for space-efficient, high-accuracy measurement in smart manufacturing.