Product Information
Precision positioning switches
Latest use cases
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Table positioning Control of the X- and Y- axes with a precision of 1 μm
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Positioning of the end face of equipment Control of the starting point of equipment
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Seating confirmation of workpiece Use as a stopper for 300 kg static loads
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Tool setter Correction of the position of worn edged tools with a precision of 0.5 μm
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Zero seek for robots Correction of the thermal displacement of the Z-axis with a precision of 0.5 μm
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Positioning within machine tools Use in adverse environments caused by scattering chips and cutting-oil
This is what distinguishes precision positioning switches from other manufacturers' sensors!
Metrol precision positioning switches are precision mechanical devices. Like a Swiss mechanical watch, it is assembled from over 7,000 original precision components based on skilled craftsmanship. Over 700 kinds of products are manufactured on the production line, which, though automated, is under the control of responsible individuals.
Metrol conducts integrated quality control throughout the production, quality inspection and delivery processes within its Tokyo factory and ships the products thus manufactured to customers all over the world.
Comparison with other manufacturers' sensors
| Contact type | Non-contact type |
Precision positioning switches | Microswitch Limit switch | Contact displacement sensor | Proximity sensor | Photoelectric sensor Optical fiber sensor Laser sensor |
Precision |
0.5 μm minimum |
N/A (approx. 50 to 100 μm) |
1 μm minimum |
10 μm minimum |
Hysteresis |
None (precision mechanical type) |
Yes (snap action mechanism) |
Yes (electrical type) |
Temperature drift |
No (because of no amplifier) |
Drift occurs (because of amplifier) |
Influence of the external environment |
None (mechanical type) |
Influenced by temperature, illumination, electric fields and magnetic fields (electrical type) |
Interference |
None |
Yes (influenced by magnetic fields) |
None |
Object detection limitations |
None |
Yes (influenced by the material and color of the object) |
Influence to the detected surface |
None |
Influenced by the surface roughness and contamination (water, oil, etc.) |
Usability in special environments at high temperatures or in a vacuum or magnetic field |
Usable (consultation required) |
Not usable |
Life |
3 million to 10 million operations |
100,000 to 500,000 operations |
10 million operations |
None (however, overcurrent often destroys elements.) |
Disadvantages of precision positioning switches
- Precision positioning switches are unable to detect things that cannot be touched including liquid and soft objects.
- Tact time is prone to be long because workpieces require contact.
- Vibration, impact and the operating speed (10 mm/minute maximum) at the mounting location may cause a chattering phenomenon in which electric signals keep turning on and off intermittently.
(Chattering can be prevented by taking the initial signal or by selecting NO type switches.)
Product specifications?(typical model listed)
Typical model |
Ultra-small type PT series |
Repeatability |
0.001 mm for both ON and OFF (range) |
Contact precision life |
3 million operations |
Operating modes |
A:NO (Normally open) |
B:NC (Normally closed) |
Circuit |
|
|
Movement before the start of operation |
Approx. 0.3 mm |
Nearly zero |
Protective construction |
IP40 |
IP40 |
IP67 (Waterproof) |
Contact force |
0.5N |
0.5N |
0.8N |
Stroke |
1.5mm |
Hysteresis |
0 |
Temperature drift |
0 |
Range of operating temperature |
0 to 80 °C (non-freezing) |
Contact ratings |
5 V DC to 24 V DC, 10 mA (20 mA maximum) resistive load |
Cyclic test with an Agilent laser measurement system
Repeatability is measured with the Agilent laser measurement system that has a precision of 1/100,000 mm. Compact as it is, the switch can achieve 1 μm repeatability (in the case of the high-precision type, 0.5 μm repeatability).
Endurance tests repeated as many as 10 million operations or more
Endurance tests were repeated over 10 million operations to ensure an durability of 3 million operations. Despite being a mechanical type, the switch has an assured durability of 3 million operations.
The voice of engineers
We have received many comments from engineers.
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Semiconductor engineer
We use the vacuum-compatible type for positioning in the solar panel manufacturing process. Previously, there were no sensors usable in a high vacuum and we were forced to conduct positioning with optical sensors from outside the system via viewports. Now, using this switch, we don't need viewports any more. In this way, costs have been reduced and the price competitiveness of the system has increased.
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Medical equipment engineer
We have employed the radiation-compatible type for the positioning of irradiation mechanisms for radiation therapy equipment. Previously, radiation accelerated the degradation of optical sensors and the costs and labor required for replacement were considerable. After the introduction, however, no labor is required for replacement and the equipment operation rate has improved.
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Elevator engineer
We have employed precision positioning switches to confirm the opening and closing of the disk brakes of elevators. The switch can precisely detect 0.5 mm slight movements without hysteresis and has enhanced the safety of elevators. Brake problems have been reduced and inquiries from other industries have increased.
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Medical equipment engineer
We have employed precision positioning switches for the balancing of microscopes used in neurosurgery. The switch supports the inosculation of 0.05 mm blood vessels at a micron level. The high precision of those microscopes has gained a good reputation in this field and many medical institutions around the world have decided to introduce them. Its small size is also very helpful in incorporating it into the equipment.
Other product lineup
There are a variety of series depending on the application. For details, please request the postage-free Precision Positioning Switch General Catalog.
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Ultra-small type PT series
M5 × 17 mm, 1 μm repeatability World's smallest class
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Mini stopper-attached STM series
300 kg Static load resistance, 8 × 8 mm Attachable to a robot fingertip
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High-precision type MT series
0.5 μm repeatability without amplifiers Usable in adverse environments caused by water and oil
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Heat-resistant type HT series
Usable at an operating temperature of 200°C
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Medium-precision type CS series
Compact design of M5 minimum Best selling positioning switch
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Vacuum-compatible type GN series
Usable in a 10-5 Pa-class high vacuum
SWITCHES for Precision Positioning STE100PB-L STMB12A-L STMB11A-L STM36A-L STM34A STM32A STM12A-LR STE100PA STE080PB-L STP100UB-L STP080DB STP080DA-L PT5M1CB-BL PT5M1CB-B PTP5M1CB-L PT5S3WA-L PT5S1WA-L PT5M3CB-BL PT5M1CB-L STS100PA-L STS080PB P10DB-BU P11GMB-ALD P11EMB-D P11EDBP-DU P11EDB-D P11DMBP-DU P11DMB-DUK P11DDBP-DUK P11DDBP-D P11DDB-D P10DHA-FUL P10DA-BUL P10DA-AUL P10SHA-T P10DLB-EL P10DLB-ALG P10DLB-ADL P10DLB-TDL P10DHLTB-TAW P10DHB-TAW P10DB-T P10DB-ALH P10DB-AH P10DA-BU P10DA-AU P10DA-AR P10DA-ADL P10DLB-AL P10DA-B CSCHP-TAW CSJS50A-L CSP087B-A CSP087A-B CSS80A-BLG CSS60B-L CSS60A-LDR CSS60A-LSR CSP087B-BL CSK087B-TDWL CSK087B-TDW CSK087B-S CSK087ATNA-L CSK087A-TLG CSK087A-TG CSK087A-LR CSK087A-BLS CSH121ATPA-D CSH121ATNA-D CSH121A-DL CSH121A-CL CSCHP-T CSC-G CSC-BG CS087A-TL CS087A-B CS067A-LG CS087A-LS CS067A-DP CS065A-L-5 CS065A-ALR BP060A-LT-5 BP060A-LDF GN-STM35A-3 BP060A-LD CS065A-LDR-5 P10DHKTB-TAWLH-0.5-CG-5 PT5S3WA P11DMB-DU P10DB-A CS067B CS067B-B PT5S1WB STMB11A P11GDB-DU PT5M1CB CSH121A-AL PT5M1WB CSK087B P11DDB-DULD CS067A-L (N-MSTKD-BD) P11DMB-29-02 STM61A P11DMB-29-01 CSK087A-L PT5S1CB CSJ055A-L P11DDB-DULDK P11DMB-DU-5P1 P08SB-A P10DA-BL P11DDB-16S P19DH-01-01H CSK087A CSJ055A CS067B-7 PTP5M3CB-L CSS60A-L P11DDBTPB-DULDK CS067A-BL (N-MSTKD-FDB) BP060A (MSPB6) STM61A-L PT5M3WB P10DL-01-10 CSH121B-A GN-PT5M3B-01 P10DL-01-11 CS087A P11DMB-DLD CSS80A PT5M3CB (CMST) CS067A (MSTKD-B) CSCP CS067A-HT2 P10DB-BUH P10DKBTPA-DU CS067B-L P11EDB-DULD-5 P19DH-01-01S CS087A-L SP060A (MSPSS6) STM82A-L SP060B-L CSRNBTPB-L1A P13DBC-DS-07 P10DB-DUH P10DHA-TLG SP060A-L P11GMB-DLD-DG-5 P10DA-AL CSJ055A-LDR STM12A-R CSH121A-A CS067A-C P11DDB-DU CS087A-BL CS067A-LR (N-MSTKG-B) CS067A-CL P11DMB-DULD P11DMBP-DULD STP100UA-0.12-CH-2 STM11A P10DLB-A-10 P10DHKTB-TDWUL P10DA-A P10DB-AL CSH121-01S P10DLB-A P10DA-BULD-6-V CSH121B-AL STE100PA-L CSP087A-A CSM105CB STS060PA-L STM14A-L CSK087A-TCL CSK087A-TDWL P11EDBPZ-08-01 CSH121A-AL-5 P10DB-B P11EMB-DU P11EMB-04-02S P10DHA-TAW CS53D-10-30AN P10DL-01-07S CSS60A P10DB-AU-0.3-CG-5 P10DA-15-01V STM82A CS065A-BL STS060PA CSP087B-02-02S CS065A-LDR CSS80A-L CS067A-B P11GMBP-DU STM82A-4 P11FMBC-DS-03 STM36A CS067A-HT1 P11EMB-DULD PT5M3WB-L P11EDB-DULD STM84A-01 P10DB-BL-W2 CS065B-L STE060PA CSK087B-L P10MCA CSS80A-LR CSM105WA CSP087A-ALR CSZ-06-00 CSC STS080PA-L P11EDB-DU P10DLB-AU STM12A-L STP100DA CSP087A-AL P11DMB-21-02S STM62A-LR CSH121A-B CSH121A-05-03 CS067A-ALDR PT5M3CB-L CS065A-L STP100UA STM82A-LR P10DHKTB-TBWUL STS060PB-L P10MCA-L CS067A-LDR P11DMB-21-02H CS087AZ-BL P10DB-B-5P1.5 CS087A-LR CSJ055ATPA-L CSS60A-R P11EDB-DULD-DG-W1 P10DB-BU-5P2-V P11DMB-D STM84A CSK087A-TDW P10DLB-ELG-10 STM34A-L P11DMB-AU-W2 P10DL-01-07H STM35A-L CSS60A-LR CSK087A-BL P10DB-BU-5W2 BP060A-LF STM12A P10DLB-AU-2 P11GMB-DULD PT5S3CB CSJ055A-B PTP5M1CB-10 P11GMB-DU CSK087B-LDR PTP5M1CB CSK087A-TL CSMP105CB STM84A-L CSM105WB P11GMB-DU-4 P11DDBTNA-DUK P11DDB-13-02S P10DB-BL CSCP-D P11EMB-04-04S STS060PB STM64A-LR P11DDB-17-01 STS100PA-L-5 STE080PA STM13A-L P11EDBP-DULD STE060PA-L P10DB-BU-5 BP060B-F STM81A-4 CSP087A-ADL P10DB-AU P10DB-DU-5 CS065A BP060A-F SP060B STE080A-L BP060A-L STS100PB STS080PA STM64A-L PT5M3WA CS067A-R CSM105WB-L CS067A-A STM32A-L CSZ-15-01 CSH121A-05-06 P10DLB-17-01S P10DHLTBTPA-03S P10DHLB-07S P11EMB-04-01S P11DDB-38-07 P11DDB-24-04 P21EDBP-09-11S P21EDBP-09-09
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