MRS73 Crane Rail

MRS73 is a 73.63 kg/m heavy crane rail, also known as 73kg crane rail, suited to stacker reclaimers, ship loaders, wharf cranes and heavy port and mining runways. Supplied with matched clips and fastening systems.

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70mm
Head Width
157mm
Height
146mm
Foot Width
73.63
kg / metre
Special
Standard
12m
Standard Length
Crane Rail

MRS73 Crane Rail, Supplied Across Australia

Inform Rail supplies MRS73 crane rail for heavy duty crane and machine runway applications across Australia. MRS73, also written as MRS 73, is a tall crane rail section, 157mm high on a 146mm foot with a 70mm head, designed for high vertical loads on stacker reclaimer, ship loader and heavy crane runways in port and mining environments.

The section is commonly known in Australia as 73kg crane rail after its nominal mass; older drawings and site records may reference other designations for the same section. With a calculated mass of 73.63 kg per metre it is a heavy profile in the Inform Rail range, produced in high-strength crane rail grades. Standard supply length is 12 metres, with cut-to-length available prior to dispatch. Matched fastening systems can be supplied to suit the profile and substructure.

MRS73 crane rail profile supplied by Inform Rail Australia

MRS73 at a Glance

Mass73.63 kg/m calculated
Head70mm wide
Height157mm
Foot146mm wide
Also known asMRS 73, 73kg rail, 73kg crane rail
Supply12m standard lengths, cut-to-length on request
Applications

Where MRS73 Rail is Used

MRS73 suits demanding applications where a heavy, stiff section is required under large wheel loads, and where existing installations already run the profile.

Ports and Wharves
Port crane and wharf crane runways, including quayside crane and ship unloader systems
Bulk Handling
Stacker reclaimers, ship loaders and bulk terminal machine runways requiring a heavy section
Heavy Industry
Mining, steelworks and heavy industrial crane runways operating under high dynamic loads
Replacement
Direct replacement for worn MRS73 or 73kg crane rail in existing installations
New Runways
New heavy runway construction where a tall, high-stiffness rail section is specified
Not sure?
Send us your crane details, drawings and application and we'll confirm the right profile and fastening system. Get in touch
Fastening Systems

Compatible Rail Clips for MRS73 Rail

The MRS73 profile requires heavy duty crane rail clips matched to its head geometry and lateral load requirements. Clip selection depends on your substructure type and load requirements.

Welded
Heavy Duty Welded Clips
Two-part welded clip systems for high lateral load MRS73 installations on steel substructures.
Bolted
Heavy Duty Bolted Clips
Heavy duty bolted clip systems with adjustment range for MRS73 installations requiring lateral alignment flexibility.
Fastening System
Full System
Matched fishplates, sole plates and rail pads as a complete fastening system for MRS73 installations.

Not sure which clip suits your MRS73 rail installation? Send us your substructure details, drawings and application and we'll advise on the correct clip type and spacing.

Crane Rail Range

Other Crane Rail Profiles

86kg
Heavy duty
CR73
Heavy duty
MRS87A
Heavy duty
A100
Heavy duty
FAQ

MRS73 Rail, Common Questions

What is MRS73 crane rail used for?
MRS73 crane rail is used for heavy duty crane and machine runway applications including stacker reclaimers, ship loaders, wharf cranes and heavy port and mining infrastructure. Its tall section gives high bending stiffness under large wheel loads, and it is a common replacement profile for worn 73kg rail in existing Australian installations.
What are the specifications of MRS73 crane rail?
MRS73 crane rail has a head width of 70mm, a height of 157mm and a foot width of 146mm, with a calculated mass of 73.63 kg per metre. It is manufactured to mill crane rail specifications in high-strength crane rail grades. Full cross-sectional dimensions and material properties are shown on the Inform Rail MRS73 crane rail product sheet.
Is MRS73 the same as 73kg crane rail?
Yes. MRS73, sometimes written as MRS 73, is commonly referred to as 73kg crane rail or simply 73kg rail in Australia after its nominal mass. MRS73 is a different section from CR73, a separate 73 kg class crane rail profile, and MRS73 is the more prominent of the two in Australia. Different mills have used their own designations over the years, so older drawings and site records may reference other names. Send your drawing or a rail measurement and Inform Rail can confirm the match.
How does MRS73 compare to the A-series crane rail profiles?
MRS73 (73.63 kg/m) is close in mass to A100 (74.3 kg/m) but very different in shape. MRS73 is a tall, narrow-headed section, 157mm high with a 70mm head, giving high vertical bending stiffness, while A100 is a low, wide DIN 536 section with a 100mm head. MRS73 is not a DIN profile, and the right choice depends on the existing rail, the crane wheel profile and the substructure.
What lengths is MRS73 crane rail available in?
MRS73 crane rail is supplied in standard 12 metre lengths, with other lengths and cut-to-length available on request prior to dispatch. Include your cutting requirements in your enquiry.
Can Inform Rail supply a complete MRS73 fastening system?
Yes. Inform Rail can supply matched crane rail clips, fishplates, sole plates and rail pads as a complete fastening package for MRS73 rail. Send your rail profile, substructure details and any drawings for a complete fastening system quote. No minimum order applies.

Need MRS73 Rail?

Send us your requirements, drawings or project details and we'll come back with a practical supply option.

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