GX-8M Inductive Proximity Sensor - Equivalent & Substitute Parts

Part Overview

The GX-8M is an inductive proximity sensor manufactured by Panasonic Industrial Automation Sales, designed for non-contact detection of metallic objects at a sensing distance of 0.8mm. This cylindrical, threaded M8 sensor operates with NPN-NO output configuration and is housed in a nickel-plated brass body with IP67 ingress protection rating.

The GX-8M is classified as obsolete. Locating equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement or new installations where this sensor specification is required.

Substiute Parts

GX-8M

Panasonic Industrial Automation SalesIn Stock: 937GX-8M Datasheet

Current PartRFQ

GX-308M-A-N

Panasonic Industrial Automation SalesIn Stock: 833GX-308M-A-N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The GX-308M-A-N is identified as the manufacturer-recommended substitute for the GX-8M. Substitution is valid based on the following alignment of critical parameters:

Matching Parameters:

• Sensor Type: Both are inductive proximity sensors
• Output Type: Both provide NPN-NO, 3-Wire configuration
• Shielding: Both are shielded designs
• Voltage Supply Range: Both operate within 10V ~ 30V
• Package / Case: Both use Cylinder, Threaded - M8 form factor
• Termination Style: Both use cable leads
• Ingress Protection: Both meet IP67 rating (GX-308M-A-N also supports IP67G and IP69K)

Differing Parameters:

• Sensing Distance: GX-8M operates at 0.8mm; GX-308M-A-N operates at 1.2mm
• Response Frequency: GX-8M at 1kHz; GX-308M-A-N at 2kHz
• Operating Temperature Range: GX-8M -25°C ~ 70°C; GX-308M-A-N -40°C ~ 85°C
• Material - Body: GX-8M uses nickel-plated brass; GX-308M-A-N uses stainless steel
• Product Status: GX-8M is obsolete; GX-308M-A-N is active

Parameter Comparison

Engineering Selection Recommendations

The GX-308M-A-N is the active, manufacturer-recommended substitute for the obsolete GX-8M. Both sensors maintain identical electrical interface specifications (NPN-NO, 3-Wire output; 10V ~ 30V supply voltage) and mechanical form factor (M8 threaded cylinder with cable leads).

The GX-308M-A-N provides enhanced compliance through ROHS3 certification and extended operational capability with stainless steel construction, broader temperature range (-40°C ~ 85°C versus -25°C ~ 70°C), and expanded ingress protection ratings (IP67G and IP69K in addition to IP67).

The primary design difference is sensing distance: the GX-308M-A-N operates at 1.2mm compared to the GX-8M's 0.8mm. This parameter must be evaluated against specific application requirements. The GX-308M-A-N also provides doubled response frequency (2kHz versus 1kHz), which may be advantageous in high-speed detection scenarios.

Frequently Asked Questions (FAQ)

Q: Can the GX-308M-A-N directly replace the GX-8M in existing installations?

A: Electrical and mechanical compatibility is confirmed. The M8 threaded form factor, cable lead termination, NPN-NO output configuration, and 10V ~ 30V supply voltage are identical. However, the increased sensing distance (1.2mm versus 0.8mm) must be validated against the specific detection geometry of your application.

Q: What is the significance of the sensing distance difference?

A: Sensing distance defines the maximum gap between the sensor face and the target metallic object for reliable detection. The GX-308M-A-N's 1.2mm sensing distance is 50% greater than the GX-8M's 0.8mm. Applications requiring detection at distances closer than 1.2mm may require alternative evaluation.

Q: Why does the GX-308M-A-N have a stainless steel body instead of nickel-plated brass?

A: Stainless steel construction provides superior corrosion resistance and durability in harsh industrial environments. This material upgrade aligns with the GX-308M-A-N's active product status and extended operational temperature range.

Q: Are there compliance differences between the two sensors?

A: The GX-8M carries RoHS Compliant certification. The GX-308M-A-N carries ROHS3 Compliant certification, representing a more current regulatory standard. Both sensors meet EAR99 export classification and identical HTSUS commodity codes.

Q: What does the expanded ingress protection rating mean?

A: The GX-8M provides IP67 protection. The GX-308M-A-N provides IP67, IP67G, and IP69K ratings, indicating compatibility with high-pressure wash and steam cleaning environments in addition to standard dust and water immersion protection.