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Sensors / Encoders > Limit Switches > Precision Limit Switches

Precision Limit Switches

Limit switches are popular for presence sensing in industrial controls. Metrol miniature limit switches offer incredible precision with repeatability down to 0.5 microns. With a service life of up to three million cycles, these precision switches are perfect for robotic and machine tool applications. Their small sizes (down to 4mm barrel) accommodate very tight mounting spaces.

Precision Touch (3 micron repeat accuracy)

Precision Touch (5 micron repeat accuracy)

High Precision Touch & Tool Setter (0.5 micron repeat accuracy)

Ball Plunger (10 micron repeat accuracy)

High Temp (10 micron repeat accuracy)

Precision Limit Switches

Precision Touch Limit Switches

Precision Touch Limit Switches - 3 Micron or 5 Micron Accuracy
High Precision Touch and Tool Setter Switches - 0.5 Micron Accuracy
Ball Plunger Limit Switches - 10 Micron Accuracy
High Temperature Precision Limit Switches - 10 Micron Accuracy

Traditional limit switches and even electronic proximity sensors are limited in terms of accuracy and repeatability. These cost-effective, ultra precise mechanical limit switches have repeatability down to 10, 5, 3, and even 0.5 microns (µm) depending on the specific model. That's 1/2000th of a millimeter. For scale: a piece of paper is typically 70-180 µm and a human hair is typically 50-60 µm wide.

Along with their high precision these limit switches are also some of the smallest switches/sensors available. Their tiny size allows them to be mounted in extremely tight locations. With a 4mm diameter barrel and length of only 12.8 mm; model BP4SWA is the smallest precision limit switch on the market

Why choose a Precision Limit Switch

General Features

Description: Precision touch
Stainless Steel
IEC IP40 to IP67, depending on model
1 million to 10 million cycles mechanical service life (depending on model)
One set of N.O. / N.C. contacts (depending on model)
2 meter cable, 3 meter cable, or 0.5m core wire connection (depending on model)
1-year warranty
Prices start at $39.50 (BP060A-L)

Precision Limit Switches

4mm Diameter BP4SWA Precision Limit Switch

	Precision Touch (3 micron repeat accuracy) Precision Touch: PT / PTP Series Ultra-small design (M5 or Ø5) barrel diameter 1.5mm plunger diameter 3 micron (µm) repetitive accuracy No movement differential Dustproof / water-resistant (IP67) models available Stainless steel housings Metal bearing N.O. or N.C. switching outputs 0.5m wire or 2m cable connections 3 micron precision touch limit switches start at *$56.50* (PT5M3WA) Precision Limit Switches (3 micron) Overview

	Precision Touch (5 micron repeat accuracy) Precision Touch: CS / CSJ / CSS / CSK / CSP / CSHP Series Slim design (from M5) allows side-by-side installation 2mm plunger diameter Long-stroke and water-resistant models available 5 micron (µm) repetitive accuracy Stainless steel housings Metal bearing N.O. or N.C. switching outputs 2m cable or 3m cable connections Straight-touch and Sliding-touch/Angled-touch variants available 5 micron precision touch limit switches start at *$42.00* (CSJ055A-L) Precision Limit Switches (5 micron) Overview

	High Precision Touch and Tool Setter (0.5 micron repeat accuracy) Precision Touch: P08 / P10 / P11 Series 0.5 micron (µm) repetitive accuracy No movement differential No temperature drift Dustproof / water-resistant (IP67) LED indicator N.O. or N.C. switching outputs 3m cable connections 0.5 micron high precision limit switches start at *$116.00* (P085DB-AL) High Precision Limit Switches (0.5 micron) Overview

	Ball Plunger (10 micron repeat accuracy) Precision Limit Switches: BP / BP4S / BP5M Series Indexing positioning ball plunger combined with touch switch for confirmation signal 10 micron (µm) repetitive accuracy Dual function reduces number of components required Higher contact force ideal for indexing N.O. switching outputs 0.5m core wire or 2m cable connections 10 micron ball plunger limit switches start at *$39.50* (BP060A-L) Ball Plunger Limit Switches (10 micron) Overview

	High Temperature (10 micron repeat accuracy) Precision Limit Switches: HT Series Operating temperature up to 200°C Straight Touch or Angled/Sliding Touch Ball plunger model provides higher contact force ideal for indexing/positioning 10 micron (µm) repeatability No movement differential No temperature drift N.O. switching outputs 2m cable connection 10 micron high temperature limit switches start at *$178.50* (BP060A-HT2) High Temperature Limit Switches (10 micron) Overview