Changmei Tech launches CM-A tram fastening for grooved rails

Changmei Technology is promoting its CM-A Type Tram Fastening for 59R2 and 60R2 grooved-rail tram projects, with field installation, gauge adjustment and electrical insulation built into one system. The company says the design is aimed at new lines, refurbishments and gauge-correction work where track geometry and stray-current control matter.

Why it matters: - Tram projects need fastening systems that handle gauge stability, vibration, insulation and maintenance without forcing a one-size-fits-all design. - CM-A is positioned as a configurable option for 59R2 and 60R2 grooved rails, which broadens its use across new construction, refurbishment and rail replacement work. - The system’s stated insulation resistance above 10⁸ Ω matters for tramway networks where stray-current control is a key engineering concern.

What happened: - Changmei Technology introduced the CM-A Type Tram Fastening for tramway projects using 59R2 or 60R2 grooved rails. - The fastening system is built around a polymer composite baseplate, microporous elastic pad, glass-fiber-reinforced gauge bushings and standard railway-grade metal parts. - The company says CM-A combines gauge stability, vibration control, electrical insulation and field maintainability. - The system is installed on site after the rail is positioned, using standard track-maintenance tools.

The details: - The polymer composite baseplate forms the primary support interface beneath the grooved rail and is designed to resist moisture and corrosion. - The microporous elastic pad provides the resilient layer that absorbs dynamic loads from passing trams. - The baseplate transfers loads into the sleeper or embedded plate, separating elastic support from the steel rail. - CM-A is compatible with 59R2 and 60R2 grooved rail profiles. - The fastening can be specified for new tram lines, existing-line refurbishment, rail replacement and gauge-correction projects. - Standard gauge adjustment is +8/-16 mm. - An optional +12/-20 mm gauge range is available for special track geometry. - Insulation resistance is specified above 10⁸ Ω. - Wear parts such as elastic pads or bushings can be replaced individually without dismantling the full fastener. - The system secures the rail to a concrete sleeper or embedded plate. - The configuration supports project-specific choices on stiffness, gauge-adjustment range, rail profile and pad material.

Between the lines: - CM-A is being framed less as a single product and more as a project-level engineering package. - That matters because tramway fastening performance depends on local track-bed conditions, rail profile and maintenance approach, not just component specs. - Changmei Technology is also tying product selection to engineering services such as site investigation, parameter confirmation, system architecture design, prototype validation and technical documentation. - The company says early-stage work can include site vibration measurements, environmental impact assessments and parameter validation. - The positioning suggests a sales approach aimed at design institutes, contractors and project owners that want pre-procurement verification. - Changmei Technology says it holds CRCC certification across five product categories and more than 10 models, but individual projects still need to match the specific CM-A model to the applicable certificates and technical documents.

What's next: - Project teams can evaluate CM-A against required stiffness, gauge-adjustment range, rail profile and pad option before procurement. - Changmei Technology says technical collaboration can extend to prototype testing, tender documentation and technical specification drafting. - More information is available in the company’s official announcement.

The bottom line: - CM-A is being marketed as a configurable tram fastening system that combines field installation, adjustable geometry and electrical isolation for grooved-rail networks.