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M18 threaded inductive sensor with chrome-plated brass body and cable connection

Turck

Turck BI8U-M18-AP6X 1644733 Inductive sensor PNP electrician tool

SKU CH-47QY-MRFDC MPN BI8U-M18-AP6X

Inductive proximity sensor with flush M18 mounting, PNP output, IP68 protection and factor 1 for all metals

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Reliable detection on all metals with Factor 1 technology
  • Withstands harsh environments thanks to IP68 protection class
  • Unaffected by magnetic interference for consistent operation
  • Installs flush in M18 threaded barrel for space-saving mounting
  • Operates on 10 to 30 VDC supply with PNP output

Turck M18 Inductive Sensor

The Turck BI8U-M18-AP6X is a flush-mountable inductive proximity switch with an M18 × 1 threaded barrel. It suits electricians and automation engineers who need reliable metal detection at an 8 mm rated switching distance. The chrome-plated brass housing meets IP68 protection and resists magnetic fields, while Factor 1 performance gives equal sensing on all metals. Supplied as a single unit in a box.

Pre-installation Checks

Verify that the control circuit operates on DC voltage between 10 and 30 VDC and accepts a three-wire PNP normally-open output. Confirm the mounting location allows a flush fit for the M18 threaded barrel and that cable routing can reach the connection point. The sensor weighs 121 g and carries the eCl@ss code 27270101 for procurement systems.

Thermals Noise and Power Draw

The solid-state design has no moving parts, so it runs silently and generates negligible heat during normal operation. Power consumption stays low within the 10…30 VDC supply range. The IP68-rated metal housing handles harsh environments without derating, and the uprox®+ electronics maintain stable switching despite strong magnetic fields.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $60.99
Cheaper than about 74% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameTURCK
Model nameBI8U-M18-AP6X 1644733
Product typeTest Equipment
In the box
Number of items1 pack

Questions about this item

Does the BI8U-M18-AP6X come with mounting hardware or must I buy nuts and washers separately?

The sensor has an M18 × 1 threaded barrel and is designed for flush mounting; mounting nuts and washers are not included and must be sourced separately.

Should I choose the PNP NO version or is another output type available for this model?

This model is supplied only as a 3-wire DC PNP normally-open sensor operating from 10 to 30 VDC; no other output configuration exists for the BI8U-M18-AP6X.

What does the 8 mm rated switching distance mean when the sensor is installed in a steel machine frame?

The 8 mm rating is achieved with the uprox®+ Factor 1 technology, so the full distance applies to all metals including steel without reduction.

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