Y50X18-08TJ2L2 | 8-Pin Industrial Bayonet Plug with 2L2 Backshell
Y50X18-08TJ2L2 is a GJB standard circular plug featuring 8 pin contacts and a size 18 shell. Designed for “X” series environmental sealing with a rugged 2L2 strain relief.
999999 in stock
- ISO & Quality Certifications
- 100% Intermateable with original parts.
- 1-Year Warranty with Full After-Sales Support
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Engineering Resilience of the Size 18 Y50X18-08TJ2L2
The Y50X18-08TJ2L2 is a high-performance interconnect gateway designed for systems that require robust electrical pathways in a mid-sized form factor. The size 18 shell is significantly more substantial than smaller variants, providing increased structural volume to house eight high-capacity pin contacts. This larger shell size is particularly advantageous in heavy industrial environments where the connector must withstand greater physical handling, higher mechanical torque, and more intense operational stress. The TJ designation identifies this as a plug shell equipped with pin (male) contacts, a standard configuration for delivering power or primary signals from a cable assembly to an equipment interface.
Mechanical security is achieved through the signature three-point bayonet coupling system characteristic of the Y50 series. This system allows for a rapid, vibration-resistant connection with a simple 120-degree turn. The tactile and audible feedback provided by the bayonet lock ensures that the 8-pole connection is fully mated and environmentally sealed. Complementing the shell is the 2L2 backshell, which offers a straight-profile sealing solution and an integrated cable clamp. This backshell functions as a high-performance strain relief, isolating the internal solder or crimp terminations from the mechanical fatigue caused by cable pulling and repetitive motion in dynamic electronic grids.
Key Specifications
Shell Material | Voltage Rating | Current Rating | Operating Temp | Ingress Protection | Mating Cycles | Keying & Polarization | Coupling |
|---|---|---|---|---|---|---|---|
Aluminum alloy | ~1000 VAC | ~40 A | -55 °C to +150 °C | IP67 | 500 | N | Quick bayonet coupling |

8-Pin Configuration and Electrical Performance
The 18-08 insert arrangement of the Y50X18-08TJ2L2 is optimized for reliability and high insulation resistance. Each of the eight pin contacts is precision-machined from a high-conductivity copper alloy and finished with premium gold plating. This plating ensures a low-resistance electrical path while providing superior protection against atmospheric oxidation and surface wear over thousands of mating cycles. The increased spacing between pins in the size 18 arrangement reduces the risk of electrical arcing and minimizes crosstalk, making it suitable for both power distribution and sensitive control signals.
Internal insulation is managed by high-performance dielectric polymers that offer exceptional dielectric strength and thermal stability. these materials maintain their geometric precision under thermal stress, ensuring that the 8-pin layout remains perfectly aligned for consistent mating. For engineers designing complex industrial control panels or energy monitoring systems, the Y50X18-08TJ2L2 provides a dependable interface that ensures signal integrity even when operating at the upper limits of the connector’s voltage and current ratings.
Environmental Hardening and "X" Grade Protection
As an “X” series environmental connector, the Y50X18-08TJ2L2 is built to thrive in moisture-heavy and particulate-rich field conditions. It is equipped with a comprehensive sealing system, including internal grommets and high-resilience interfacial seals that create a moisture-proof and dust-proof barrier. This ensures that the internal contact area remains protected against rain, salt spray, and atmospheric contaminants. The 2L2 backshell provides a critical secondary seal at the rear of the connector, preventing humidity or fine dust from entering the housing through the cable entry point.
Beyond environmental sealing, the metallic aluminum alloy shell provides a natural Faraday cage for EMI/RFI shielding. When paired with shielded cables and the 2L2 backshell, the Y50X18-08TJ2L2 effectively attenuates external electromagnetic interference, preventing it from corrupting the signals passing through the 18-08 interface. The shell finish, typically available in nickel or olive drab chromate, adds a robust layer of corrosion resistance, preserving the functional life of the bayonet lugs and the structural integrity of the connector in aggressive industrial or maritime atmospheres.

Strategic Integration in Modern Industrial Grids
The versatility and ruggedness of the Y50X18-08TJ2L2 make it an essential component for system integrators across the aerospace, defense, and industrial automation sectors. In heavy machinery and robotics, its large footprint and robust strain relief are ideal for multi-axis cable management where mechanical stress is constant. In the energy sector, the GJB-compliant design ensures intermateability with existing size 18-08 infrastructure, allowing for cost-effective system hardening and maintenance. By providing a standardized yet highly evolved interconnect gateway, this plug supports the development of more resilient electronic architectures worldwide.
Whether it is integrated into a robotic control unit, a high-power field diagnostic tool, or a ruggedized sensor network, the Y50X18-08TJ2L2 delivers performance that exceeds traditional standards. Its blend of mechanical strength, environmental resilience, and electrical precision provides the confidence needed for mission-critical deployments. By choosing this advanced size 18 variant, procurement and engineering teams are investing in a long-term solution that reduces maintenance overhead and increases system uptime in the most demanding environments.
FAQ
What does the TJ designation signify in the Y50X18-08TJ2L2?
What does the TJ designation signify in the Y50X18-08TJ2L2?
TJ refers to a plug shell equipped with pin (male) contacts. This is a common configuration for cable-end connectors that serve as the primary power or signal source for a connection.
Is the size 18 shell more durable than smaller shell sizes?
Is the size 18 shell more durable than smaller shell sizes?
Yes, the larger size 18 shell provides more structural material and a higher resistance to mechanical impact and torque, making it suitable for heavier-duty industrial applications.
How does the 2L2 backshell improve the assembly?
How does the 2L2 backshell improve the assembly?
The 2L2 backshell provides a secure mechanical clamp on the cable, acting as a strain relief to protect the internal solder or crimp terminations from being damaged by pulling or vibration.
Can this plug mate with any Y50 series receptacle?
Can this plug mate with any Y50 series receptacle?
It is designed to mate with any Y50 series receptacle that features a size 18 shell, a matching 8-socket (female) arrangement, and a compatible three-point bayonet interface.
What environmental protection level does it offer?
What environmental protection level does it offer?
When properly mated and locked, the Y50X18-08TJ2L2 provides an environmental seal equivalent to IP65 or higher, shielding the connection from dust, moisture, and salt spray.
Certification
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