Panasonic GX-108MKB Inductive Proximity Sensor

USD 25.37

M8 shielded inductive sensor with 2mm sensing range and NC NPN output. Features 1.5kHz response, IP67 stainless steel body, and 360° viewable LED indicator.

SKU Panasonic-GX-108MKB Category
Top Brands > Panasonic > Inductive Proximity Sensors

Panasonic GX-108MKB Inductive Proximity Sensor

Model Identifier GX-108MKB
Official Part Number GX-108MKB
GTIN Standard NA

Technical Overview

The Panasonic GX-108MKB is a high-performance cylindrical inductive proximity sensor from the GX-100 series. This model features an M8 shielded barrel, designed for flush mounting in metallic surfaces. It is a 2x distance type with a nominal sensing range of 2 mm for standard ferrous targets. The sensor operates on a 12 to 24 VDC power supply and provides a Normally Closed (NC) NPN open-collector output. Engineered for demanding applications, it boasts a rapid 1.5 kHz response frequency, making it ideal for detecting fast-moving objects. The rugged housing is constructed from stainless steel with a PBT sensing face, sealed to an IP67 rating for superior resistance to dust and water. A standout feature is its transparent rear cap with an integrated, 360-degree viewable orange LED, offering unmistakable visual confirmation of the sensor's output status from any direction.

Key Features

  • M8 x 1 threaded stainless steel body for robust mounting
  • Shielded construction allows for flush mounting in metal
  • 2x sensing distance model with a 2mm nominal range (±10%)
  • High-speed 1.5 kHz response frequency suitable for fast-moving targets
  • IP67 rating ensures protection against dust and water ingress
  • Normally Closed (NC / 离开时ON) NPN open-collector output
  • Wide operating voltage range of 12 to 24 VDC (±10%)
  • Supplied with an integrated 2m, 3-core oil-resistant rubber cable

360-degree, high-visibility orange LED indicator housed in a transparent rear cap for clear operational status from any angle.

Technical Specification Matrix

ParameterValue
Sensing TypeInductive
Body StyleCylindrical, Threaded
Thread SizeM8 x 1
Mounting TypeShielded (Flush)
Sensing Distance2 mm ± 10%
Stable Sensing Range0 to 1.6 mm
Standard Sensing Target8 x 8 x 1 mm (Iron Plate)
Output TypeNPN Open-Collector
Output LogicNormally Closed (NC)
Max. Response Frequency1.5 kHz
Max. Sink Current100 mA
Residual Voltage≤ 2.0 V
Power Supply Voltage12 to 24 VDC ±10% (Ripple P-P 10% or less)
Current Consumption≤ 10 mA
Protection RatingIP67 (IEC)
Operating Temperature-25 to +70 °C
Storage Temperature-40 to +80 °C
Housing MaterialStainless Steel
Front Cap MaterialPBT
Rear Cap MaterialPC
Connection2m, 3-core cable (0.1 mm²)
IndicatorOrange LED (Output ON)

Industrial Applications

1. High-Speed Component Presence Verification in Assembly Machines

In a high-speed automated assembly line for small electronics, the GX-108MKB is flush-mounted into a metal fixture holding a circuit board. Its task is to confirm that a small metal bracket has been correctly placed by a robotic arm before the next assembly step.

Problem Solved

The sensor's compact M8 size and shielded design allow for unobtrusive, flush installation directly into metal tooling, saving space. The 1.5 kHz response frequency is essential for keeping up with the machine's fast cycle time, preventing bottlenecks. The NC output can be used as a failsafe, signaling an error (part absent) only when the output goes high, simplifying control logic.

Component PresenceAutomated AssemblyFlush MountingHigh-Speed DetectionPoka-yokeEnd-of-Arm ToolingNPN Sensor

2. CNC Machine Tool Turret Home Position Sensing

The GX-108MKB is installed on the stationary frame of a CNC lathe's tool turret. It detects a metal flag on the rotating turret to confirm it has returned to the precise 'home' or 'tool 1' position, ensuring accurate and repeatable tool changes.

Problem Solved

The sensor's stainless steel body and IP67 rating withstand the harsh environment of coolant, oil, and metal shavings common in CNC machines. Its high repeat accuracy (≤5% of sensing distance) ensures the turret stops at the exact same position every time, which is critical for machining precision. The shielded design prevents false triggers from surrounding metal structures.

CNC MachiningHome Position SensorTool TurretInductive Proximity SwitchMachine Tool AutomationCoolant ResistantRepeatable Positioning

3. Rotational Speed Monitoring via Gear Tooth Counting

On a conveyor system's drive motor, the GX-108MKB is positioned to detect the passing teeth of a small steel gear mounted on the motor shaft. The PLC counts the pulses from the sensor to calculate the motor's RPM and monitor for under-speed or stalled conditions.

Problem Solved

The 1.5 kHz response frequency is more than adequate for accurately detecting the teeth of a rapidly rotating gear, providing clean and reliable pulses for the PLC's high-speed counter. Its small M8 size allows for installation in tight spaces near the motor shaft. The NC output immediately signals a fault (output low) if the gear stops between teeth, simplifying stall detection logic.

RPM MeasurementGear Tooth SensorSpeed MonitoringTachometerConveyor ControlPulse GenerationRotational Speed
Select your currency