
Ultra-small Precision Positioning Switch [PT]
The world’s smallest!
M5 x 17 mm

The world’s smallest Precision positioning switches.
These switches make it possible to downsize machines by installing directly to semi-conductor manufacturing / automotive manufacturing / metal mold / medical equipment.
Reasons to choose Ultra-small Precision Positioning Switch

Downsize machines with the world’s smallest switches!
The world’s smallest M5 x 17 mm Precision positioning switches.
Used for origin detection in various industrial machines and medical machines such as CNC machine tools, semiconductor production equipments, microscopes for neurosurgery and disc brakes.

1μm repeatability, 3 million contact life time!
The precision positioning switch using no amp does not cause signal point drift due to external environment or self-generation and can output stable high precision signals.
This ultra small switches endure 3 million times operation mechanically and electrically.
Product list

Repeatability : 1μm type
Product No. | Output | IP | Size | LED | Order | Download | ||||
---|---|---|---|---|---|---|---|---|---|---|
Worldwide | ||||||||||
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PT5M1WB | B:NC | IP40 | M5 | – | SHOP NOW |
Catalog (PDF) |
2D CAD
|
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PT5M1WB-L | with | |||||||||
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PT5S1WB | φ5 | – | |||||||
PT5S1WB-L | with | |||||||||
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PT5M1CB | M5 | – | |||||||
PT5M1CB-L | with | |||||||||
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PT5S1CB | φ5 | – | |||||||
PT5S1CB-L | with | |||||||||
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PTP5M1CB | IP67 | M5 | – | ||||||
PTP5M1CB-L | with | |||||||||
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PTP5S1CB | φ5 | – | |||||||
PTP5S1CB-L | with | |||||||||
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PT5M1WA | A:NO | IP40 | M5 | – | |||||
PT5M1WA-L | with | |||||||||
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PT5S1WA | φ5 | – | |||||||
PT5S1WA-L | with |
Repeatability : 3μm type
Product No. | Output | IP | Size | LED | Order | Download | |||||
---|---|---|---|---|---|---|---|---|---|---|---|
Worldwide | USA | ||||||||||
![]() |
PT5M3WB | B:NC | IP40 | M5 | – | SHOP NOW |
![]() |
Catalog (PDF) |
2D CAD
|
||
![]() |
PT5S3WB | φ5 | – | ||||||||
![]() |
PT5M3CB | M5 | – | ||||||||
PT5M3CB-L | with | ||||||||||
![]() |
PT5S3CB | φ5 | – | ||||||||
PT5S3CB-L | with | ||||||||||
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PTP5M3CB | IP67 | M5 | – | |||||||
PTP5M3CB-L | with | ||||||||||
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PTP5S3CB | φ5 | – | ||||||||
PTP5S3CB-L | with | ||||||||||
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PT5M3WA | A:NO | IP40 | M5 | – | ||||||
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PT5S3WA | φ5 | – |
Electrical specification | Options / Precautions| Technical guide
Specification
Switch structure | Dry contact |
---|---|
Repeatability | 1μm type : 0.001mm 3μm type : 0.003mm |
Pretravel | Approximately 0.3mm (A : NO) / No pretravel (B : NC) |
Stroke | 1.5mm |
Movement differential | 0 |
Contact life time | 3 million |
Contact force | IP40:0.5N IP67:0.8N |
Temperature drift | 0 |
Operating temperature range | 0℃-80℃ (Ice-free) →10-5Pa Vacuum-resistant Switches |
Contact rating | DC5V-DC24V |
Metrol VS Competitor
Metrol’s Ultra Small Size Positioning Switches | Proximity sensor / Photo sensor | Laser sensor | Contact displacement sensor | |
---|---|---|---|---|
Switch structure | Contact type (precision machines) |
Non-contact type (magnetism / light) | Non-contact type (light) | Contact type (electricity) |
Repeatability | ![]() 1μm |
![]() 10μm〜 |
![]() 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 |
![]() Affected |
![]() Not affected |
|
Contact life time | 3 million times | None (Many elements damaged due to overcurrent) |
10 million times | |
Numeral display | ![]() No display (ON / OFF signals) |
![]() 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 high repeatability and precision positioning switches under harsh working conditions where coolant or cutting chips splatter. →High-precision Positioning Switch [MT]
- Low cost switches for applications, the precision positioning not requiring high accuracy. →Positioning Switch [CS]
Applications

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.

Detection of height of the nozzle of the dispenser
Correction of the Z-axis of a desktop soldering robot 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.

Open-Close confirmation of the brake friction pad
Stable detection of 0.5 mm or less of slight movement.

Detecting the starting point of a stteper motor
The starting point of the driving parts realizes high performance like a servo motor.

Detection of gaps in the printing machine drums
Stable detection of gaps the CMYK drums by micron increment.
Related Article
[ Product Story ]One day, a customer demanded a switch like this.・Switch diameter M5 and the length should be less…
Posted by Metrol Tool Setter (for CNC Machine) on 2015年12月13日
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