Ultra-Compact High Precision PT-Touch Switch

PT Series

The world's most compact high-precision touch switches for any mounting location.

One of the most compact touch switches in the world, with an outer diameter of M5 and an overall length of 17 mm.
Used in equipment across a wide range of industries, including semiconductor, automotive manufacturing, tooling, and medical equipment. Direct mounting in limited space enables downsizing of machinery.

  • Made in Japan
  • High Durability
  • Long-selling
  • Cust Reduction
  • High Precision
  • Ultra-compact

Why Choose Us

Compact and installable in small spaces

Compact and installable in small spaces

The world’s smallest size range of M5 (outer diameter) × 17 mm (overall length) is ultra-compact and lightweight and can be mounted even in limited space, enabling downsizing of machines and jigs.
Widely used for jigs, seating confirmation, XY stage positioning, and stroke end origin setting.

High accuracy + High durability

High accuracy + High durability

1μm repeatability and durability of 3 million cycles, SUS303 body is more resistant to deterioration and lasts longer than plastic sensors.
Applicable to a wide range of high-precision purposes, from presence/absence detection to thermal displacement compensation, parallelization, among many others.

Water and oil resistant with IP67 protection rating

Water and oil resistant with IP67 protection rating

Consistent detection is ensured even in adverse environments with splashing water, oil, coolant, or chips.

Amplifier-free, precision mechanical system prevents false detection

Amplifier-free, precision mechanical system prevents false detection

METROL touch switches avoid false detection due to mutual interference between sensors or changes in magnetic fields, unlike electric sensors.
In addition, the absence of amplifiers eliminates temperature drift and stress differences due to self-heating and enables detection of minute movements in the micron range.
This prevents defects and minor production stoppages caused by false detection, contributing to improved production efficiency and quality.

The following customizations are available for your applications:

The following customizations are available for your applications:

– Modification of measuring contact probe
– Adjusting transistor output

1μm Repeatability test -Ultra-compact PT-Touch switch-

[Positioning Switch] Application

Product Line

Repeatability 1μm

PN Output mode Repeatability Outer Stroke IP code / protective structure LED Price Download
PT5M1CB PT5M1CB B:NC 1μm M5×0.5 1.5mm IP40 without Buy on VONA
PT5M1CB-L PT5M1CB-L B:NC 1μm M5×0.5 1.5mm IP40 with Buy on VONA
PT5S1CB PT5S1CB B:NC 1μm φ5 1.5mm IP40 without Buy on VONA
PT5S1CB-L PT5S1CB-L B:NC 1μm φ5 1.5mm IP40 with Buy on VONA
PT5M1WA PT5M1WA A:NO 1μm M5×0.5 1.5mm IP40 without Buy on VONA
PT5M1WB PT5M1WB B:NC 1μm M5×0.5 1.5mm IP40 without Buy on VONA
PT5S1WA PT5S1WA A:NO 1μm φ5 1.5mm IP40 without Buy on VONA
PT5S1WB PT5S1WB B:NC 1μm φ5 1.5mm IP40 without Buy on VONA

Repeatability 1μm w/ Waterproof (IP67)

PN Output mode Repeatability Outer Stroke IP code / protective structure LED Price Download
PTP5M1CB PTP5M1CB B:NC 1μm M5×0.5 1.5mm IP67 without Buy on VONA
PTP5M1CB-L PTP5M1CB-L B:NC 1μm M5×0.5 1.5mm IP67 with Buy on VONA
PTP5S1CB PTP5S1CB B:NC 1μm φ5 1.5mm IP67 without Buy on VONA
PTP5S1CB-L PTP5S1CB-L B:NC 1μm φ5 1.5mm IP67 with Buy on VONA

Repeatability 3μm

PN Output mode Repeatability Outer Stroke IP code / protective structure LED Price Download
PT5M3CB PT5M3CB B:NC 3μm M5×0.5 1.5mm IP40 without Buy on VONA
PT5M3CB-L PT5M3CB-L B:NC 3μm M5×0.5 1.5mm IP40 with Buy on VONA Buy on
AutomationDirect
PT5S3CB PT5S3CB B:NC 3μm φ5 1.5mm IP40 without Buy on VONA
PT5S3CB-L PT5S3CB-L B:NC 3μm φ5 1.5mm IP40 with Buy on VONA Buy on
AutomationDirect
PT5M3WA PT5M3WA A:NO 3μm M5×0.5 1.5mm IP40 without Buy on VONA Buy on
AutomationDirect
PT5M3WB PT5M3WB B:NC 3μm M5×0.5 1.5mm IP40 without Buy on VONA Buy on
AutomationDirect
PT5S3WA PT5S3WA A:NO 3μm φ5 1.5mm IP40 without Buy on VONA
PT5S3WB PT5S3WB B:NC 3μm φ5 1.5mm IP40 without Buy on VONA

Repeatability 3μm w/ Waterproof (IP67)

PN Output mode Repeatability Outer Stroke IP code / protective structure LED Price Download
PTP5M3CB PTP5M3CB B:NC 3μm M5×0.5 1.5mm IP67 without Buy on VONA
PTP5M3CB-L PTP5M3CB-L B:NC 3μm M5×0.5 1.5mm IP67 with Buy on VONA Buy on
AutomationDirect
PTP5S3CB PTP5S3CB B:NC 3μm φ5 1.5mm IP67 without Buy on VONA
PTP5S3CB-L PTP5S3CB-L B:NC 3μm φ5 1.5mm IP67 with Buy on VONA Buy on
AutomationDirect

Main Specifications

Repeatability  1μm / 3μm(Range)
Contact Force  0.5N / 0.8N
Outer diameter 5mm
Overall length 18 - 25mm
How to touch the objects Straight-on touch
Stroke  1.5mm
Protective structure IP40 / IP67
Operating temperature range 0 - 80℃
Switch structure Dry contact
Output mode A : NO / B : NC
Pretravel 0 - 0.3mm
Movement differential 0
Contact life time 3 million  (No bungle caused by vibration and use under contracting rating)
Contact material SUS HRC45
Case material SUS303
Cable Core-wire cable : 0.5m (×2) Oil-resistant φ0.6 Tensile strength 15N
Cabtyre cable:2m Oil-resistant φ2.8/2cores Tensile strength 30N Minimum bending R7
Operating temperature range 0℃ - 80℃ (Ice free)

Temperature drift 0 (because of no amplifier)
Oscillation 10 - 55Hz Total amplitude 1.5 for X、Y、Z each direction
Impact 300㎨ for X、Y、Z each direction
Contact rating DC5V - DC24V Steady current: 10mA or less (Rush current: 20mA or less)
When using the switch with LED, limit the current below 10mA.
Standard accessory Two fixing nuts for threaded type
Note: * At operating speed 50 - 200mm/min (operating speed slower than 10mm/min is NOT recommended).

Applications: (Examples)

Prevention of doubling of thin sheet metal

Prevention of doubling of thin sheet metal

Detects two pieces of 0.5 mm thick sheet metal at 1/10 the price of a contact-type displacement sensor

Origin setting for semiconductor inspection table

Origin setting for semiconductor inspection table

Correction of thermal displacement of XY-axis table in microns

Pulse motor drive origin setting

Pulse motor drive origin setting

Originating the drive unit, the performance comparable to a servo motor.

Printing machine drum misalignment detection

Printing machine drum misalignment detection

Stabilized detection of misalignment of each CMYK drum in microns

Dispenser nozzle height detection

Dispenser nozzle height detection

Z-axis compensation of tabletop robots in microns

Open-close confirmation of the brake pads

Open-close confirmation of the brake pads

Stable detection of minute movements of 0.5 mm or less with no differential response.

Comparison with other blands

METROL's
Ultra-compact
PT-Touch Switch
Proximity / Optical sensor Laser sensor Contact displacement sensor
Detection Method Contact type
(Precision machines)
Non-contact type
(Magnetism / light)
Non-contact type
(Light)
Contact type
(Electricity)
Repeatability 1μm x 10μm - 1μm
Movement Differential None x Occur
Temperature drift・
Influence of external environment
Not affected
(No master conformity is needed)
x 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 x Affected Not affected
Contact life time 3 million times None
(Many elements damaged due to overcurrent)
10 million times
Numeral display x No display
(ON / OFF signals)
x No display
(ON / OFF signals)
Display
(Many of the automated in-lines need no number display)

Disadvantages of touch type

  • Liquids, soft workpieces, and other objects that are not touchable cannot be detected.
  • Takt time (TT) may be longer because of the time required to contact the workpiece.
  • Since the detection is made by making contact with the workpiece, the measuring range is shorter than the non-contact type sensors.

Contact