used RENISHAW OMP40-2 Optical Transmission probe Head On line measuring Tools Tested

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What Is the Renishaw OMP40-2 Optical Transmission Probe?

In short: The Renishaw OMP40-2 is a compact optical spindle probe that uses modulated infrared transmission to communicate touch-trigger measurements from inside a CNC machining center to the machine controller, enabling automated workpiece setup and in-process gauging with micron-level repeatability.

Machine shops investing in automation know that probing cuts setup time dramatically — what used to take 20 minutes of manual edge-finding and dial-indicator work can be reduced to a 30-second automatic cycle. The OMP40-2, part of Renishaw's second-generation OMP40 family, is engineered specifically for medium to large machining centers where reliable optical communication across the machine envelope is critical. Its modulated transmission scheme rejects ambient light interference from workshop fixtures and nearby infrared sources, so the signal stays clean even when chip coolant mist clouds the line of sight.

This particular unit has been removed from service, inspected, and tested to confirm functional operation of both the trigger mechanism and the optical transmitter. It arrives ready for integration with a compatible Renishaw OMI or OMM receiver. The OMP40-2 supports multiple turn-on methods including shank switch and rotation-activated wake-up, giving your operators flexibility in how they deploy the probe within the tool changer.

If you are adding probing capability to a Haas, Mazak, DMG Mori, or similar machining center, the OMP40-2 is a strong candidate. Verify your machine's receiver compatibility and interface protocol before ordering — our applications team can help with the technical fit check.

Technical Specifications

Frequently Asked Questions

Does this probe come with the receiver module?

This listing is for the OMP40-2 probe head only. The OMI/OMI-2 or OMM receiver is sold separately. If you need both the probe and receiver, mention it in your inquiry and we can check current stock availability for a matched set.

How was this used probe tested?

Our inspection process verifies that the trigger mechanism fires consistently and the optical transmission LED emits a clean modulated signal readable by standard Renishaw receivers. We check for physical damage to the housing, lens window, and electrical contacts. The probe passes functional bench testing before being listed. Note that stylus run-out calibration is machine-specific and should be performed by your CNC operator after installation.

Can the OMP40-2 handle coolant and chip exposure inside a machining center?

Yes. The OMP40-2 is sealed to IPX8 standards, meaning it withstands continuous immersion in coolant — far more than the splashing and misting it encounters during normal CNC operation. The optical window is hardened glass designed to resist scratching from fine chip particles. However, keeping the window clean with periodic wiping ensures the strongest optical link.

What turning speeds does this probe support for rotation-activated wake-up?

The OMP40-2 typically activates at spindle speeds above approximately 500 RPM for rotation-based wake-up. The exact threshold can be configured. Verify your CNC control settings against the Renishaw installation guide to ensure the probe wakes up reliably at your intended activation speed.

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