High-precision Positioning Switch [MT]
0.5 micron in repetitive accuracy!
IP67, resistant to harsh environments with coolant oil or metal cuttings.
The precision positioning has been achieved under harsh working conditions such as CNC machine tools or automobile manufacturing lines.
Reasons to choose High-precision Positioning Switch
0.5 micron in repetitive accuracy!
MT-Touch switches were co-invented with TOYOTA as a precision switch which can stably output the ultra-high-accuracy positioning signals under harsh working conditions such as automobile manufacturing lines where coolant and cutting chips splatter.
IP 67 protective structure! Can be used in harsh environment!
The special coating gum has been adopted for waterproof and is applicable to water as well as a wide range of coolant (especially for alkaline).
The total 500,000 of this type switch has been used in machine tools where coolant and cutting chips splatter for an use of starting point.
Product list
Straight touch type [P08 / P10]
| Product No. | Output mode | Stroke | Mounting dimension |
Order | Download | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Worldwide | USA | |||||||||
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P085DB-A | B：NC | 3mm | M8×0.5 | SHOP NOW |
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Catalog (PDF) |
2D CAD
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| P08SB-A | B：NC | 3mm | φ8 | |||||||
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P10DA-A | A：NO | 3mm | M10×0.5 | ||||||
| P10DB-A | B：NC | 3mm | M10×0.5 | |||||||
| P10SA-A | A：NO | 3mm | φ10 | |||||||
| P10SB-A | B：NC | 3mm | φ10 | |||||||
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P10DLB-A | B：NC | 10mm | M10×0.5 | ||||||
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P12DA-A | A：NO | 3mm | 2-M4 | ||||||
| P12DB-A | B：NC | 3mm | 2-M4 | |||||||
| P12DLB-A | B：NC | 10mm | 2-M4 | |||||||
Sliding, Angled, Offset touch type [P10DH]
| Product No. | Output mode | Stroke | Mounting dimension |
Order | Download | ||||
|---|---|---|---|---|---|---|---|---|---|
| Worldwide | |||||||||
 |
P10DHA-T | A：NO | 3mm | M14×0.5 | Quote | Catalog (PDF) |
2D CAD
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| P10DHB-T | B：NC | 3mm | M14×0.5 | Quote | |||||
| P10SHA-T | A：NO | 3mm | φ14 | Quote | |||||
| P10SHB-T | B：NC | 3mm | φ14 | Quote | |||||
| P10DHLTB-T | B：NC | 10mm | M14×0.5 | Quote | |||||
Electrical specification｜ Options / Precautions｜ Technical guide
Specification
| Switch structure | Dry contact |
|---|---|
| Repeatability | 0.0005mm (range) |
| Pretravel | 0.2mm (A : NO) / 0mm (B : NC) |
| Protective structure | IP67 * |
| Movement differential | 0 |
| Contact life time | 3 million |
| Contact force | 1N * |
| Temperature drift | 0 |
| Operating temperature range | 0℃-80℃ （Ice-free） |
| Contact rating | DC5V-DC24V |
* Excludes P10MC / L11B series
Metrol VS Competitor
| Metrol’s High-precision MT-Touch Switch | Contact digital sensor | Laser sensor | |
|---|---|---|---|
| Switch structure | Contact type (precision instrument) |
Contact type (electricity) | Non-contact type (light) |
| Repeatability |  0.5μm |
1μm |
|
| Movement differential | None |
 Occur |
|
| Temperature drift / Influence on external environment | Not affected (No master conformity is needed) |
Affected by the change in external environment or self-generation. (require frequent conformity to the master) |
|
| Affects on objects by the reflection rate / roughness / adhesion of Water drops | Not affected |
Not affected |
Affected |
| Protective structure | IP67 (Resistant to harsh environments with coolant oil or metal cuttings.) |
IP67 (Unsuitable for an environment where coolant or cutting chips splatter.) |
|
| Contact life time | 3 million times | 10 million times | None (Many elements damaged due to overcurrent) |
| Numeral display | No display (ON / OFF signals) |
Display (Many of the automated in-lines need no number display) |
|
Disadvantages of contact type
- Untouchable objects such as liquid or soft objects cannot be detected.
- The takt time might be longer because a switch takes time to touch a workpiece.
- Measuring range gets narrower compared to non-contact type due to detection by touching workpieces.
[Metrol’s switches]
- The world’s smallest size, the precision positioning in narrow spaces. →Ultra-small Precision Positioning Switch [PT]
- Low cost switches for applications, the precision positioning not requiring high accuracy. →Positioning Switch [CS]
Applications
Detection of the starting point in the blade edge of tool machines
Resistant to harsh environments with coolant oil or metal cuttings.
Dimension measurement of a workpiece on the surface grinder
Measuring a workpiece with 0.5μm precision.
Detection of wear of compact carving machine tools
The improvement of machining accuracy can detect wear of tools in micron level.
The starting point of the inspection table for semiconductors
Correction of thermal displacements of the X- and Y-axes of the table by micron increment.
Correction of thermal displacements of a desktop soldering robot
Correction of thermal displacements of the Z-axis by micron increment.
Detection of gaps in the printing machine drums
Stable detection of gaps the CMYK drums by micron increment.
Prevention of double feeding thin metal sheets
Detection of double feeding of 0.5 mm thickness of metal sheets at 1/10 price of contact-type displacement sensors.
Detection of wear of grinding stone in a CNC grinding machine
Correcting wear of grinding stone under harsh working conditions with 0.5μm precision.
Detecting the starting point of a stteper motor
Low-price stepper motors can achieve as high precision positioning as servo-motors by detecting the starting point of the driving parts.
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