BS 50 “O” Railway Fishplate

The BS50 "O" railway fishplate, also known as a joint bar or splice bar, is designed to connect two BS50 "O" rail sections at a rail joint. Installed in pairs on both sides of the rail web and secured with fishbolts, it helps maintain rail alignment and structural continuity at the joint.

BS 50 "O" Railway Fishplate specification

GNEE RAILWAY RAILWAYL manufactures BS50 "O" fishplates under an ISO 9001:2015 quality management system and uses dedicated testing equipment to verify compliance with specified technical requirements. Product dimensions, configurations, and quality requirements can be confirmed according to project and customer requirements.

The BS50 "O" railway fishplate, also known as a joint bar or splice bar, is used to connect two BS50 "O" steel rails at a rail joint. Installed in pairs and secured with fishbolts, it provides a stable mechanical connection between adjacent rail sections.

Its main functions include:

• Rail Connection: Joins adjacent rail ends and maintains continuity at the rail joint.

• Alignment Support: Helps maintain the vertical and horizontal alignment of the connected rail sections.

• Load Transfer: Supports the transfer of wheel loads and other forces across the rail joint.

• Joint Stability: Helps resist movement and separation of the rail ends during railway operation.

• Rail Expansion Accommodation: Works with the specified joint design and fastening system to accommodate controlled rail movement caused by temperature changes.

The performance of a BS50 "O" fishplate depends on its dimensions, material, bolt-hole configuration, fastening system, and compatibility with the BS50 "O" rail profile.

GNEE RAILWAY RAILWAYL supplies BS50 "O" railway fishplates designed for compatible rail systems, with specifications available according to project requirements.

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Q1: Can a BS50 "O" fishplate be used with other 50 lb rail profiles?

A: Not necessarily. Although different rail profiles may have the same nominal weight, their rail head, web, foot, and fishing dimensions can differ. A BS50 "O" fishplate should be matched specifically to the BS50 "O" rail profile to ensure proper fit and contact.

Q2: What fastening hardware is required for BS50 "O" fishplates?

A: Installation normally requires a pair of fishplates together with compatible fishbolts, nuts, and washers. The specific bolt size, quantity, and fastening arrangement should be confirmed according to the rail joint specification.

Q3: What signs indicate BS50 "O" fishplate wear or damage?

A: Common inspection points include cracks around bolt holes, worn contact surfaces, elongated bolt holes, loose or damaged fishbolts, and visible movement at the rail joint. Damaged components should be inspected and replaced according to the applicable track maintenance requirements.

Q4: How does a BS50 "O" fishplate joint accommodate rail temperature changes?

A: Rail expansion and contraction are managed through the rail-joint design, specified rail gap, fishplate configuration, and fastening system. The required joint gap and fastening method should follow the applicable rail standard and project specifications.

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