CBTG0BG Push-Pull Connector for Railway Wheel Profile Gauges 2026: 0B 7-Contact Plug

The CBTG0BG-SMSM07-D52B is a CBTG0BG push-pull connector for railway wheel profile gauges — a compact 0B straight cable plug with seven low-voltage contacts, a published rated current of 3 A, a maximum electrical contact resistance of 8.7 mΩ, published shielding performance of 75 dB at 10 MHz and 40 dB at 1 GHz, a push-pull self-latching mechanism, a cable collet with nut for fitting a bend relief, a specified cable outside diameter range of 4.30–5.20 mm, a chrome-plated brass shell, IP50 protection and 5,000 mating cycles. Every specification in this guide is backed by the railway inspection equipment interconnect engineering of Spring Technology.

Pain point: Carrying sensor signals, auxiliary power and trigger lines from a laser measurement head to a handheld gauge — where the head is swapped between wheels all shift, the cable is coiled and re-plugged constantly, and the profile data has to survive an electrically noisy depot floor?

Core answer: The CBTG0BG-SMSM07-D52B is a compact seven-contact circular cable plug designed for reliable low-voltage connections in professional measurement equipment, and can be considered for portable railway wheel profile laser measuring gauges — its secure locking system, compact 0B size and cable strain-relief design make it a potential connection solution for detachable laser measurement heads and sensor cable assemblies. Portable railway wheel profile laser measuring gauges are used by railway maintenance teams to inspect the condition of train wheels, measuring parameters including flange height, flange thickness, wheel tread profile and other dimensions related to wheel wear. During inspection a laser measurement head projects a light pattern onto the wheel surface, an optical sensor captures the reflected light and the instrument processes the data to calculate the wheel profile — and maintenance personnel use these measurements to decide whether a wheel requires further inspection, reprofiling or replacement. A portable system typically consists of a handheld display unit, the laser measurement head, optical sensors and connecting cables, and the cable between head and main unit must carry low-voltage power, measurement signals and control signals.

The CBTG0BG-SMSM07-D52B is a straight cable-mounted plug on the compact 0B platform, offered with a seven-contact configuration.

• Latching Mechanism: Push-pull self-latching mechanism (secure mating during measurement, quick disconnection when changing heads)
• Recommended Hardware: Spring Technology Circular Connector and custom cable assembly service
• Key Metric: 7 low-voltage contacts; 3 A published rating; 8.7 mΩ contact resistance; 75 dB / 40 dB shielding; IP50

Note: actual current must remain within the connector’s specified limits and should be evaluated according to the complete cable assembly and operating conditions; IP50 is not a water-ingress or heavy-dust rating.

Wheel gauges are handled hard in depots. The design advantages below explain why this CBTG0BG push-pull connector for railway wheel profile gauges suits portable optical measurement equipment:

• The CBTG0BG-SMSM07-D52B features seven low-voltage contacts, providing multiple connection paths within one compact circular connector. For a railway wheel profile measuring gauge, the contacts can be allocated to compatible sensor signals, low-voltage power, trigger signals and communication lines — consolidating the electrical connection between the laser measurement head and the handheld processing unit.

• Railway wheel inspections are often performed in maintenance depots and workshops where technicians reposition the instrument frequently. The push-pull self-latching mechanism keeps the connector securely mated during measurement and allows technicians to disconnect the cable quickly when changing measurement heads or transporting the equipment — particularly useful for portable instruments requiring frequent connection and disconnection.

• Portable railway inspection instruments need to balance measurement performance with compact dimensions and manageable weight, and the 0B connector size provides a compact circular interface for the seven-contact configuration — allowing designers to integrate a detachable cable connection without taking up excessive space on the measurement head or handheld unit.

• The CBTG0BG-SMSM07-D52B features a cable collet and a nut designed for fitting a bend relief, and supports cable outer diameters from 4.30 mm to 5.20 mm. This construction secures the cable and reduces mechanical stress around the soldered contact termination — useful for portable systems whose cables are repeatedly handled, repositioned and connected during inspection work.

• The published specification lists a rated current of 3 A and a maximum contact resistance of 8.7 mΩ for this model. These characteristics support compatible low-voltage power and signal circuits in portable measurement equipment, providing electrical paths for the measurement head and its associated electronic components.

• The published specification lists minimum shielding performance of 75 dB at 10 MHz and 40 dB at 1 GHz for this connector configuration — beneficial in electronic measurement equipment where electromagnetic interference may affect sensor signals. Proper cable shielding, grounding and system-level electromagnetic compatibility design are still necessary to achieve reliable measurement performance.

• The connector features a chrome-plated brass shell and is specified for 5,000 mating cycles, with its metal housing and push-pull locking mechanism supporting repeated connection and disconnection during equipment setup and maintenance. Its IP50 protection rating suits indoor or otherwise protected environments, and it should not be considered waterproof or suitable for direct exposure to heavy dust or water.

Portable railway wheel profile measuring gauges depend on accurate optical sensors and reliable communication between the measurement head and the main processing unit. This CBTG0BG push-pull connector for railway wheel profile gauges combines seven low-voltage contacts, a push-pull self-latching mechanism, cable strain relief and a compact metal housing — and its shielding characteristics make it a potential option for sensor cable assemblies in electronic measurement equipment, helping manufacturers of railway wheel inspection instruments provide a secure and detachable electrical interface between the optical measurement head and the handheld instrument.

The 0B shell belongs to Spring Technology’s compact push-pull connector family for portable instruments and optical measurement equipment. The same platform serves this CBTG0BG push-pull connector for railway wheel profile gauges and scales across plugs, sockets and contact counts.

• Plugs: TG 0B straight plugs with cable collet, including the seven-contact layout used here.
• Elbow plugs: TH 0B elbow plugs for angled cable exits in tight measurement heads.
• Receptacles: ZGG.0B fixed panel sockets, including a 307-series insert listed as a matching fixed panel-mount receptacle.
• Pin counts: 2–9 contacts across the 0B shell, with key G or keys A…M and R.

• Custom contact allocations and part numbers (such as the CBTG0BG-SMSM07-D52B) matched to each gauge’s sensor wiring.
• Shielded sensor cable assemblies with defined cable openings, bend relief and 360° screen termination.
• Grounding and EMC support for laser head and detector signal circuits.
• Mating receptacle selection support, including keying and contact-layout confirmation.

The CBTG0BG-SMSM07-D52B is a potential connector solution for portable railway wheel profile laser measuring gauges — its seven low-voltage contacts, push-pull locking mechanism, cable strain-relief design and shielding performance support the connection requirements of compatible optical measurement systems. This connector shows how Spring Technology serves railway inspection equipment, aligning a shielded 0B plug with the customer’s wheel-profile gauge requirements, and the company also provides professional customization services for both push-pull connectors and cable assemblies, offering tailored solutions to meet your specific technical requirements.

When selecting this connector, manufacturers should verify the sensor wiring configuration, contact assignment, cable diameter, current requirements and environmental conditions to ensure compatibility with the complete measuring instrument.

For more information about our 0B series connectors or to discuss your requirements, contact us at [email protected] or [email protected], or visit our website. Our engineering team will respond to your CBTG0BG push-pull connector for railway wheel profile gauges enquiry within 24 hours.

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