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Precision Measurement Equipment Maintenance Technical Data Series
Document version: V1.0
Applicable brand: Renishaw
Reference manual: Probing systems for CNC machine tools
Compilation unit: Technical Department of Ningbo Jiangce Technology Co., Ltd.
Release date: June 20, 2026
Renishaw is a leading brand in the global CNC machine tool online measurement field, with its product line covering three categories: workpiece probing, tool setting, and broken tool detection. This guide aims to systematically sort out the technical positioning, applicable scenarios, and selection logic of Renishaw’s various models for equipment selection personnel, helping to match suitable product solutions according to actual processing needs.
All technical data in this article are referenced from Renishaw’s official technical manualProbing systems for CNC machine tools(comprehensive selection manual) and corresponding model product specifications.
The core classification dimensions of Renishaw CNC probes are:trigger technology,transmission method, andaccuracy level.
Renishaw uses two core triggering technologies in the field of onboard probes:
Kinematic resistive: Traditional mechanical triggering structure, precise reset is achieved inside the measuring head through three sets of roller ball kinematic positioning mechanisms. When the measuring needle contacts the workpiece, the mechanical structure generates a small displacement, triggering an electrical signal. This is Renishaw’s most widely used technology route, covering mainstream models such as OMP40-2, OMP60, RMP40, RMP60, etc. Repetitive accuracy of 1.00 µ m (2 σ, standard test conditions).
Strain gauge RENGAGE ™ (Strain gauge): Renishaw patented technology directly detects deformation signals through internal piezoelectric strain gauges when the measuring needle is under force, without the need for mechanical displacement to trigger. Compared to kinematic structures, strain gauge probes have three core technological advantages: extremely low triggering force (OMP400 XY direction only 0.06 N), which can measure thin-walled and easily deformed workpieces; The repeatability accuracy reaches sub micron level (0.25 µ m 2 σ), suitable for high-precision contour measurement; The deviation stroke of the measuring needle is extremely small, which can effectively avoid the risk of collision caused by accidental triggering. The representative models are OMP400 and OMP600.
Renishaw offers three signal transmission methods to adapt to different machine tool structures and processing environments:
Infrared optical transmission: 360 ° omnidirectional infrared optical signal, with a working distance of up to 5 meters. Suitable for small to medium-sized machining centers with clear line of sight in the machining area. The typical receiver combination is OMI-2 (integrated) or OMM-2+OSI (split). Optical transmission has fast response and low latency, making it the most widely used transmission method by Renishaw.
FHSS radio transmission: 2.4 GHz ISM frequency hopping spread spectrum radio, with a working distance of up to 15 meters (RMI-QE receiver). Not relying on line of sight transmission, suitable for large machining centers, horizontal machining centers, five axis machine tools, and situations where there are obstacles blocking the machining area. Radio transmission adopts frequency hopping technology and has good anti-interference ability.
Hardwire transmission: Directly connected to the machine tool I/O interface through cables.. No need for batteries, no signal obstruction issues, and extremely high reliability. Suitable for situations where machine tool structure is fixed and cable layout allows, or as a backup solution in multi probe systems. The representative models are LP2 and MP11.
Renishaw clearly divides the in machine probes into two accuracy levels: Standard accuracy (1.00 µ m 2 σ) and High accuracy (0.25 µ m 2 σ). When selecting, it is necessary to make a comprehensive judgment based on the tolerance requirements of the workpiece, material characteristics, and the accuracy level of the machine tool itself.
Technical positioning: OMP40-2 is the smallest and lightest workpiece probe in Renishaw’s product line.. With a diameter of 40mm and a weight of only 277g (including battery), it is specially designed for small and medium-sized machining centers and small multitasking machine tools. Optical infrared transmission, with a maximum receiving distance of 5 meters.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force XY (low/high) | 0.50 N / 0.90 N |
| Trigger force+Z | 5.85 N |
| Weight (including battery, excluding handle) | 277 g |
| protection level | IPX8 |
| battery | 2 × 189AA lithium battery |
| Standby life | 1500 days |
| Continuous use | 1350 hours |
|
Applicable scenarios: OMP40-2 is suitable for workpiece alignment, coordinate setting, and dimension measurement on small three-axis vertical machining centers.. Its compact size allows it to occupy the smallest tool space in the tool magazine, making it suitable for small machine tools with tight tool positions. The triggering force is moderate (0.50 N in the XY direction), which can meet the measurement requirements of conventional materials such as aluminum alloys and copper alloys.
Selection suggestions:
Technical positioning: OLP40 has the same structural dimensions as OMP40-2, but has been strengthened in sealing and protective design, making it suitable for applications such as lathes and grinders with high coolant flow and harsh cutting environments.. The core parameters are consistent with OMP40-2.
Differences from OMP40-2: OLP40 adopts higher protection standards in housing sealing and battery compartment cover design, suitable for working environments immersed in coolant for a long time.. The repetition accuracy and triggering force parameters are consistent with OMP40-2, which can be considered as an upgraded version of OMP40-2 for harsh environments.
Technical positioning: OMP60 is Renishaw’s most widely used universal workpiece probe.. Diameter of 63 mm, weight of 885 g (including battery), designed with a large-sized optical window, excellent signal reception stability. Suitable for machining centers of various sizes.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force XY (low/high) | 0.75 N / 1.40 N |
| Trigger force+Z | 5.30 N |
| Weight (including battery, excluding handle) | 885 g |
| protection level | IPX8 |
| battery | 2 x AA lithium batteries |
| Standby life | 1767 days |
| Continuous use | 690 hours |
Applicable scenarios: OMP60 is the most widely used model in Renishaw’s product line.. The larger external dimensions make the internal kinematic structure more stable, and the battery capacity (AA specification) provides longer endurance. The triggering force in the XY direction is 0.75 N, slightly higher than OMP40-2, but still within the low triggering force range.
Selection suggestions:
Technical positioning: RMP40 is the wireless version of OMP40-2, which uses 2.4 GHz FHSS frequency hopping spread spectrum radio transmission to provide more reliable signal transmission in machine tools with limited optical line of sight.. The core trigger parameters are consistent with OMP40-2.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force XY (low/high) | 0.50 N / 0.90 N |
| Weight (including battery, excluding handle) | 250 g |
| transmission method | FHSS wireless 2.4 GHz |
| working distance | Maximum distance of 15 meters (RMI-QE) |
| protection level | IPX8 |
| Standby life | 82 months |
| Continuous use | 2560 hours |
| battery | 2 × ½ AA |
Applicable scenarios: RMP40 is suitable for processing environments where optical vision cannot be guaranteed.. Typical applications include the flipping worktable of horizontal machining centers, the swing angle machining of five axis machine tools, and situations where there are fixtures or workpieces obstructing the machining area. Wireless transmission does not require light, which can save debugging time during installation.
Selection suggestions:
Technical positioning: RLP40 is an enhanced protection version of RMP40, designed specifically for lathes, grinders, and multitasking machines.. The triggering force parameters are slightly different (0.60 N for XY low/0.97 N for XY high), while the wireless transmission performance remains consistent. Suitable for continuous operation immersed in coolant and chip environment.
Technical positioning: The RMP60 is the wireless version of the OMP60 and also the probe with the strongest endurance (101 months of standby/4870 consecutive hours) and the largest working range (up to 15 meters) in Renishaw’s product line. Suitable for ultra large machine tools and complex machining environments without visual paths.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force XY (low/high) | 0.75 N / 1.40 N |
| Weight (including battery, excluding handle) | 876 g |
| transmission method | FHSS wireless 2.4 GHz |
| working distance | Maximum distance of 15 meters (RMI-QE) |
| Standby life | 101 months |
| Continuous use | 4870 hours |
| battery | 2 × AA |
Selection suggestions:
Technical positioning: LP2 is the representative model of Renishaw’s hard wire transmission probe.. Weighing only 65 g, it is the lightest model in the entire line of products. Hard wired transmission does not require batteries or wireless modules, and signals are directly transmitted to the machine interface through cables, with extremely high reliability.
Core Parameters:
| Parameter item | LP2 | LP2H |
|---|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm | 2.00 µm |
| Trigger force XY (low/high) | 0.50 N / 0.90 N | 2.00 N / 4.00 N |
| Trigger force+Z | 5.85 N | 30.00 N |
| weight | 65 g | 65 g |
| protection level | IPX8 | IPX8 |
| power supply | Hard wired power supply | Hard wired power supply |
There are two variants of LP2: LP2DD and LP2HDD, which are double diaphragm sealed types suitable for harsh environments containing particulate cutting fluid, such as grinding machines and cast iron machining. LP2H has higher spring force and can use longer measuring needles, but the accuracy is correspondingly reduced.
Selection suggestions:
Technical positioning: MP11 is a hard wired probe with a built-in signal processing interface, equipped with a spiral cable, which can directly connect to the I/O interface of the CNC system without the need for an additional receiver. Weight 540 g, designed specifically for regular CNC milling machines with manual tool changing.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force XY (low/high) | 0.50 N / 1.50 N |
| Trigger force+Z | 1.80~7.00 N |
| weight | 540 g |
| protection level | IP66 |
| power supply | Hard wired power supply |
Selection suggestions:
Renishaw RENGGAGE ™ Strain gauge technology is currently the most accurate technical route among trigger type probes in machines. Unlike kinematic resistance probes, strain gauge probes generate trigger signals by detecting the deformation of the strain gauge at the root of the probe, with extremely low triggering force and no mechanical hysteresis.
Technical positioning: OMP400 equipped with RENGAGE ™ Strain gauge technology, with a repeatability accuracy of 0.25 µ m (2 σ, 50 mm measuring needle) and a trigger force of only 0.06 N in the XY direction, is the lowest trigger force model in Renishaw’s entire product line. Diameter of 40mm, weight of 256g, consistent with the external dimensions of OMP40-2, suitable for small and medium-sized machine tools.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 0.25 µ m (50 mm measuring needle) |
| 0.35 µ m (100mm measuring needle) | |
| Trigger force XY | 0.06 N |
| Trigger force+Z | 2.55 N |
| Weight (including battery) | 256 g |
| transmission method | 360 ° infrared optics (modulation/traditional) |
| Recommended measuring needle | High modulus carbon fiber, 50 mm~200 mm |
| protection level | IPX8 |
| battery | 2 × ½ AA |
| Standby life | 1 year |
| Continuous use | 105~110 hours |
Applicable scenarios: OMP400 is suitable for high-precision machining and thin-walled part measurement.. The extremely low triggering force (0.06 N) enables reliable online measurement in thin-walled parts, easily deformable workpieces, and precision mold processing. A repeatability of 0.25 µ m can meet the tolerance requirements of IT5~IT6 levels for workpiece inspection.
Selection suggestions:
Technical positioning: OMP600 is a large-sized version of OMP400.. Diameter of 63 mm, weight of 1029 g, trigger force of 0.15 N in XY direction, repeatability of 0.25 µ m. Equipped with AA specification battery, it has stronger endurance. Suitable for high-precision measurement requirements of large machining centers.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 0.25 µ m (50 mm measuring needle) |
| Trigger force XY | 0.15 N |
| Trigger force+Z | 1.75 N |
| Weight (including battery) | 1029 g |
| transmission method | 360 ° infrared optics (modulation/traditional) |
| protection level | IPX8 |
| battery | 2 × AA |
| Standby life | 800 days |
| Continuous use | 380~410 hours |
Selection suggestions:
The Renishaw contact type tool setter adopts the same kinematic triggering principle as the workpiece probe, and achieves accurate measurement of tool length and diameter through the contact between the disc-shaped measuring needle and the tool edge. Divided into three series according to transmission methods.
Technical positioning: OTS adopts infrared optical transmission, and the installation method is the same as that of the workpiece probe (loaded into the tool holder and put into the tool magazine). When in use, it is clamped by the spindle and sent to the tool alignment station.. Suitable for automatic tool alignment in small and medium-sized machining centers.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force | 1.30~2.40 N (depending on the touch direction) |
| Weight (including disc-shaped measuring needle and battery) | 870 g(½ AA)/ 950 g(AA) |
| transmission method | Infrared Optics (Modulation) |
| protection level | IPX8 |
| battery | Half AA or AA |
| Standby life | 310 days (1/2 AA)/730 days (AA) |
| Continuous use | 400 hours (1/2 AA)/800 hours (AA) |
Selection suggestions:
Technical positioning: RTS adopts FHSS wireless transmission, suitable for large machining centers, horizontal machining centers, and gantry machining centers, and is not limited by optical line of sight. The core trigger parameters are consistent with OTS.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force | 1.30~2.40 N |
| Weight (including disc-shaped measuring needle and battery) | 870 g |
| transmission method | FHSS wireless 2.4 GHz |
| working distance | Up to 15 meters away |
| protection level | IPX8 |
| battery | 2 × AA |
| Standby life | 99 months |
| Continuous use | 4860 hours |
Selection suggestions:
Technical positioning: TS27R is a classic model of Renishaw fixed hard wire tool setter.. Installed on the workbench or machine sidewall, directly connected to the machine I/O through a 4-core shielded cable. No battery or signal receiver required, extremely reliable.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 1.00 µm |
| Trigger force | 1.30~2.40 N |
| Weight (including disc-shaped measuring needle) | 1055 g |
| transmission method | Hardwire (4-core shielded cable, 10m) |
| protection level | IPX8 |
| power supply | Hard wired power supply |
Selection suggestions:
Technical positioning: LTS is the most accurate model of Renishaw contact tool setter (0.75 µ m 2 σ), but only measures the length of Z-direction tools.. Equipped with air blowing cleaning function, suitable for length setting and thermal compensation of various CNC machine tools.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Repetitive accuracy (2 σ) | 0.75 µm |
| Trigger force | 3 N (Z direction) |
| Weight (including air blowing components) | 835 g |
| transmission method | Hardwire (7-core shielded cable, 8 meters) |
| protection level | IPX6, IPX8 |
| power supply | Hard wired power supply |
Selection suggestions:
Technical positioning: NC4+Blue is Renishaw’s most advanced non-contact tool alignment system.. Using blue laser (405 nm), it has higher beam quality and smaller minimum detectable tool diameter compared to traditional red laser (670 nm). The repeatability accuracy can reach ± 0.5 µ m. It can measure the length, diameter, and contour of the tool, and also has the function of tool breakage detection.
Core Parameters:
| Parameter item | F115 | F145 | F230 | F300 |
|---|---|---|---|---|
| Repetitive accuracy (2 σ) | ±0.5 µm | ±0.5 µm | ±0.75 µm | ±0.75 µm |
| Minimum detectable tool | Ø0.03 mm | Ø0.05 mm | Ø0.1 mm | Ø0.2 mm |
| Weight (according to configuration) | 1080~2000 g | 1080~2000 g | 1080~2000 g | 1080~2000 g |
| laser type | Blue light (405 nm)/Red light (670 nm) | Blue light (405 nm)/Red light (670 nm) | Blue light (405 nm)/Red light (670 nm) | Blue light (405 nm)/Red light (670 nm) |
| transmission method | Hardwire (NCi-6 interface) | Hardwire (NCi-6 interface) | Hardwire (NCi-6 interface) | Hardwire (NCi-6 interface) |
| protection level | IPX6, IPX8 | IPX6, IPX8 | IPX6, IPX8 | IPX6, IPX8 |
| power supply | Hard wired power supply | Hard wired power supply | Hard wired power supply | Hard wired power supply |
Applicable scenarios: NC4+Blue is suitable for machining scenarios that require extremely high tool accuracy.. The minimum detectable tool diameter of 0.03 mm enables it to detect micro drills and micro milling cutters. The repeatability of ± 0.5 µ m meets the tool setting requirements for high-precision machining. The blue light laser scheme is more stable than red light in machining environments with cutting fluid sputtering and oil mist diffusion.
Selection suggestions:
Model selection(Laser beam separation distance):
Technical positioning: TRS2 is a non-contact system designed by Renishaw specifically for tool breakage detection.. Using ToolWise ™ Technology determines the integrity of a rotating tool by analyzing the frequency characteristics of the laser signal reflected by the tool, without interference from cutting fluid and chips. The minimum detectable blade size is Ø 0.2 mm.
Core Parameters:
| Parameter item | numerical value |
|---|---|
| Detection method | Non contact (ToolWise) ™ Laser Reflection Analysis |
| Minimum knife breakage detection | Ø0.2 mm |
| Weight (including 10m cable) | 750 g |
| transmission method | Hardwire (integrated interface) |
| protection level | IPX8 (in ventilated state) |
| power supply | Hard wired power supply |
| Detection Time | About 1 second per blade |
Selection suggestions:
| Machine tool type | Recommended workpiece probe | Recommended tool setter | Selection criteria |
|---|---|---|---|
| Small three-axis vertical jack (<800 mm) | OMP40-2 / OMP400 | OTS / TS27R | Compact probe size, limited tool magazine space |
| Medium sized machining center (500~2000 mm) | OMP60 / OMP600 | OTS / TS27R / NC4+ Blue | Strong universality and good adaptability |
| Large gantry/horizontal crane (>2000 mm) | RMP60 / RMP40 | RTS / TS27R / NC4+ Blue | Wireless eliminates line of sight restrictions |
| Five axis machining center | RMP60 / RMP40 | RTS / NC4+ Blue | Variable line of sight in angular processing |
| Lathe/turning milling composite | RLP40 / LP2 | LTS / APC | In harsh environments, hard wires are more reliable |
| Precision mold processing | OMP400 / OMP600 | NC4+ Blue | Submicron level precision requirements |
| Ordinary CNC milling machine | MP11 | — | Hardwire interface, no need for tool magazine |
| Tolerance grade | Recommended probe | Recommended tool setter | explanation |
|---|---|---|---|
| > IT7(> ±0.02 mm) | OMP40-2 / OMP60 / RMP40 / LP2 | OTS / TS27R | A standard precision probe is sufficient to meet the requirements |
| IT5~IT7(±0.005~±0.02 mm) | OMP400 / OMP600 | NC4+ Blue | Need strain gauges or laser technology |
| < IT5(< ±0.005 mm) | OMP400 | NC4+ Blue | Need to combine machine tool accuracy and thermal compensation |
| Environmental conditions | Recommended transmission method | Recommended Model |
|---|---|---|
| High flow rate of cutting fluid, unobstructed | optics | OMP40-2 / OMP60 / OTS |
| The cutting fluid has a large flow rate and is obstructed | radio | RMP40 / RMP60 / RTS |
| Grinding/Cast Iron Processing, Particle Cutting Fluid | hard line | LP2DD / LP2HDD / TS27R |
| Heavy cutting with severe chip impact | hard line | MP11 / TS27R |
| Oil mist environment, difficult optical transmission | radio | RMP series/RTS |
Economic combination (three-axis vertical lathe, 600-1000mm worktable):
Standard combination (universal machining center, 800~1600 mm worktable):
High precision combination (five axis/precision mold machining center):
Automated production line combination (unmanned processing unit):
Renishaw probe with different transmission modes shall be matched with corresponding receiver or interface:
Optical Receiver:
Radio receiver:
Hardwire interface:
Tool presetter dedicated interface:
Document version: V1.0
Applicable brand: Renishaw
Reference manual: Probing systems for CNC machine tools
Compilation unit: Technical Department of Ningbo Jiangce Technology Co., Ltd.
Technical support: Ningbo Jiangce Technology Co., Ltd.
Copyright statement: This document is prepared by the Technical Department of Ningbo Jiangce Technology Co., Ltd. and is only used for technical exchange and training purposes..The Renishaw and related product names referenced in this document are registered trademarks of Renishaw Corporation. All technical parameters are subject to Renishaw’s official product manual.
JCE Industrial Technology specializes in CNC probe and tool setter repair, calibration, and technical support for all major brands including Renishaw, Marposs, and Blum. For inquiries or technical assistance, contact us at jcetech_info@jcetech.cn or visit jcetech.cn.