The CNC probe is the core component for achieving automated precision measurement in CNC machine tools. At present, the mainstream brands in the market are Renishaw (UK), Marpos (Italy), and Blum Novotet (Germany). The following is a comparison of the mainstream models of CNC probes from the three major brands based on their official technical information.

Comparison of mainstream model parameters of CNC probes from three major brands

parameter item	Renishaw OMP40-2	Renishaw OMP60	Renishaw RMP60	Marposs VOP40	Bolong TC50/TC52
Trigger technology	Mechanical	Mechanical	Mechanical+wireless	Mechanical	Mechanical
Repetitive accuracy (2 σ)	1.00 μm	1.00 μm	1.00 μm	1.00 μm	0.80 μm
XY trigger force	0.5 N	15.5 N (long measuring rod)	15.5 N	0.3 N	0.5 N
Z triggering force	4.5 N	10.0 N	10.0 N	5.0 N	8.0 N
Protection Rating	IPX8	IPX8	IP68 (including interface)	IPX8/IP68	IP68
transmission method	Optics (Infrared)	Optics (Infrared)	Radio (FHSS)	Optics (Infrared)	Optics (Infrared)
Transmission range	6 m	6 m	15 m	6 m	6 m
Standby life	Up to 1500 days	Up to 1767 days	Up to 1767 days	Up to 1800 days	Up to 2000 days
weight	250 g	885 g	885 g	310 g	300 g
Range of measuring rod length	50–150 mm	50–200 mm	50–200 mm	50–150 mm	50–200 mm

The above data is sourced from official technical manuals and product specifications of various brands. Comparison does not constitute purchasing advice. Please consider the specific machine tool and application scenario for actual selection.

Characteristics of CNC probe technology for various brands

Renishaw – OMP40-2/OMP60/RMP60

According to official public data, Renishaw’s CNC probe product line is represented by OMP40-2 (compact, suitable for small and medium-sized machining centers), OMP60 (universal, suitable for large machine tools), and RMP60 (wireless, suitable for five axis and large equipment). OMP40-2 adopts optical infrared transmission, with a maximum standby time of 1500 days and a weight of only 250 g, suitable for small tool magazines and high-speed machining. OMP60 weighs 885 g and has a maximum standby time of 1767 days. It is compatible with BT40/BT50 tool holders and suitable for large molds and heavy cutting processes. RMP60 adopts FHSS frequency hopping spread spectrum radio transmission, with a transmission range of up to 15 meters, and can deploy up to 316 sets of probes in the same workshop without crosstalk. The repeatability accuracy of the three models is 1.00 μ m (2 σ), and the protection level is IPX8. Unverified, the above data is sourced from Renishaw’s official product manual.

Marposs-VOP40/WRP series

According to official public data, Marposs’ CNC probes are represented by VOP40 (optical transmission type) and WRP series (wireless transmission type). VOP40 has a repeatability of 1.00 μ m (2 σ) and a trigger force of 0.3 N in the XY direction, which is one of the lowest trigger forces among the three brands. It can reduce measurement errors in thin-walled and easily deformed workpieces. Standby for up to 1800 days, protection level IPX8/IP68. The WRP series adopts wireless transmission, with a transmission range of up to 20 meters, suitable for large machine tools and five axis machining scenarios. The Marposs probe is designed based on the Mida platform and is compatible with various machine tool control systems. Unverified, the above data is sourced from the official technical manual of Marposs.

Bolong Blum Novotest – TC50/TC52

According to official public data, Bolong’s TC50/TC52 probe is characterized by high repeatability, with an official nominal repeatability of 0.80 μ m (2 σ), which is the highest among the three brands. TC50 is suitable for standard workpiece measurement scenarios, while TC52 supports more communication interface protocols on the basis of the same accuracy. Protection level IP68, with a maximum standby time of 2000 days. The TC series uses Blum’s patented shark360 ™ Mechanical triggering mechanism design, capable of withstanding high lateral impact forces, suitable for heavy cutting and casting processing scenarios. Unverified, the above data is sourced from the official product manual of Bolong.

选型建议

Small and medium-sized machining centersOMP40-2 (lightweight and compact) or VOP40 (low triggering force)
Large scale mold processingOMP60 or TC52 (high rigidity)
Five axis/large machine toolRMP60 (wireless) or WRP series
Thin walled/deformable workpiecesVOP40 (lowest triggering force)
Heavy cutting/casting：TC52（shark360 ™ High impact resistance)

Ningbo Jiangce Technology (jcetech. cn) provides professional maintenance and new product sales services for the three major brands of CNC probes, covering all models such as Renishaw OMP series, Marposs VOP/WRP series, and Bolong TC series. The service scope includes fault detection, parts replacement, precision calibration, and calibration verification.

This article is compiled by Ningbo Jiangce Technology. The data is sourced from official technical manuals and product specification documents of various brands. Unverified, the above technical comparison is for reference only. Please comprehensively evaluate the specific selection based on the machine interface, processing technology, and installation conditions.

📌Extended reading: 10 probe configuration schemes for processing scenarios·Quick reference table for measuring head tool presetter model·Common faults and maintenance guide

FAQ Selected Q&A

**Q: Is the repeatability of Renishaw OMP40-2 and OMP60 the same? ** **Answer: * * Same. Both use a three-point kinematic triggering mechanism with a nominal repeatability of 1.00 μ m 2 σ (Renishaw standard accuracy level). The difference lies in size and transmission distance: OMP40-2 is suitable for BT30/BT40, while OMP60 is suitable for BT40 and above models. The high-precision model OMP600 can reach 0.25 μ m 2 σ. **Q: Can Marposs VOP40 and Renishaw OMP40-2 be exchanged? ** **Answer: * * The installation interface is compatible, but the triggering mechanism is different (VOP40 uses piezoelectric type). Changing the brand requires recalibration and confirmation of receiver compatibility. According to official public data, the nominal repeatability accuracy of the two is close, but it is recommended to confirm the E32U optical interface matching before procurement. **Q: What are the advantages of Bolong TC52 photoelectric trigger? ** **Answer: * * TC52 adopts photoelectric triggering (zero mechanical wear), with a theoretical lifespan much higher than mechanical contact type. The repeatability accuracy is 0.4 μ m2 σ. Suitable for high-frequency cutting scenarios, it will not cause accuracy drift due to mechanical wear.

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Renishaw vs Marposs vs Polon: Comparison of mainstream CNC probe model parameters