About RMP40
The RMP40 combines the miniaturisation of the OMP40-2 with the radio capability used in the RMP60 and RMP600. It uses the 2.4 GHz frequency band that is compliant with radio regulations worldwide and compatible with any Renishaw RMI interface/receiver.
With RMP40, machining centres fitted with small HSK and taper spindles can now benefit from FHSS radio transmission technology. It is ideal for multi-axis milling applications where the line of sight between the inspection probe and interface cannot always be maintained.
The RMP40M is also available which enables probe inspection of part features that would be inaccessible to the standard RMP40. It allows fitment of adaptors, extensions and Renishaw’s LP2 touch probe.
RMP40 features and benefits
Simple set-up
Unlike fixed frequency systems, with the RMP40 there is no need to allocate a specific radio channel.
Compact and robust
The RMP40 is ideal for machines of all sizes and can access surfaces cut with short tools. Its robust stainless steel body makes it suited to the harshest machine environments.
Ideal for retrofit
The RMI (a combined antenna, interface and receiver) can be positioned anywhere near the machine, resulting in a fast installation.
Frequency hopping spread spectrum transmission
Renishaw’s FHSS transmission for probes allows the RMP40 and RMI to hop frequencies together to provide reliable communications.
Miniaturisation
Miniaturisation of electronics has allowed the development of an ultra-compact radio probe measuring only 40 mm in diameter and 50 mm in length; Renishaw’s smallest radio probe.
Simple and safe programming
Patented Trigger Logic™ enables users to configure the system without access to the internals of the probe.
RMP40 specification
| Dimensions | Diameter: 40 mm (1.57 in)
Length: 50 mm (1.97 in) |
| Weight (without shank) | with batteries 250 g (8.81 oz)
without batteries 230 g (8.11 oz) |
| Territory | EU and USA (Japan and others pending) |
| Transmission type | Frequency Hopping Spread Spectrum (FHSS) radio |
| Radio frequency | 2.402 – 2.481 GHz |
| Switch ON methods | Radio ‘M’ code, spin |
| Switch OFF methods | Radio ‘M’ code, spin, time out |
| Operating range | Up to 15 m (49.2 ft) |
| Interface/receiver | RMI combined antenna, interface and receiver unit |
| Sense directions | Omni-directional: ± X, ± Y, +Z |
| Uni-directional repeatability | 1.0 µm (0.00004 in)* |
| Stylus trigger force** | 5.85 N, 585 gf (20.6 ozf) |
| Stylus overtravel | XY plane ± 12.5o
+Z direction 6 mm (0.24 in) |
| Battery type | 2 x ½ AA (3.6 V) Lithium Thionyl Chloride (LTC) |
| Battery life (using LTC) | stand by 290 days
5% usage 170 days
continuous life 450 hours |
| Sealing | IPX8 (BS 5490, IEC 60529) 1 atmosphere |
* Performance specification is for a test velocity of 480 mm/min (18.91 in/min) with a 50 mm (1.97 in) ceramic stylus. Test velocity does not constrain performance in application.
** The stylus trigger force is the force exerted on the component when the probe triggers. However, the maximum force applied to the component will occur after the trigger point and will be greater than the trigger force. The magnitude depends on a number of factors affecting probe overtravel including measuring speed and machine deceleration. If the forces applied to the component are critical, contact Renishaw for further information.
RMP40 software options
The following software packages can be used to program probing routines for work piece set-up and inspection on CNC machining centres
- EasyProbe - entry-level package for simple work piece set-up
- Inspection - basic set-up and work piece inspection cycles, with automatic update of offsets
- Inspection Plus - an integrated suite of inspection cycles including vector measurement
- Productivity+™ Active Editor Pro - a PC-based software package with GUI, allowing the user to select features directly from an imported CAD model, making the generation of probing cycles even easier.
Renishaw’s smallest probe with frequency hopping radio transmission.