Railway Fasteners - Rail Anchor

Rail anchors made in one-piece construction from spring steel are designed to fasten the steel rail tight on the base of the rail to prevent the rail from longitudinal movements, i.e. the “ creeping” of the rail, caused by changing temperature, grades, traffic patterns, and braking action of trains.

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Rail anchors are applied to the rail base directly and lodge up against the tie. Rail anchors provide a large bearing surface against rail base and railroad tie, preventing cutting and wear, and eventually to prolong the working life of the railroad ties. Anchors are made for a specific rail weight and base width, which can be classified into two types: the Drive-on rail anchors and Spring type rail anchor.

Rail anchors specifications

Type	Used in 50Kg, 85Kg,90/91LB, 115RE /136RE ,UIC54 & UIC60 rail, or other types upon customers' drawings.
Material	60Si2MnA	45#	QT500-7
Chemical composition(%)	C:0.56-0.64, Mn:0.60-0.90, Si:1.60-2.00, Cr:≤0.35, P:≤0.03, S:≤0.03	C:0.42-0.50, Mn:0.50-0.80, Si:0.17-0.37, Cr:≤0.25, P:≤0.035, S:≤0.035	C:3.60-3.80, Mn:≤0.6, Si:2.50-2.90, P:≤0.08, S:≤0.025
Surface	plain (oiled),color painting, zinc painted or HDG
Standard	AS1085.10-20002 , DIN, ISO-9001

Application Rules of Rail Anchors

How to use the rail anchors? There are general rules on the application of rail anchors:

Rail anchors should be on the gage side of the rail base against the same tie face on opposite rails.

Rail anchors have to hold the rail base tightly and firmly and have full bearing against rail tie face.

A new rail anchor and a rail tie will be needed when the bearing of rail anchor against the tie has been disturbed.

Anchors shall not be moved by driving them along the rail.

The rail ties should be kept straightened when the anchors are applied.

rail anchor structure

rail anchor application

Locations of Rail Anchors

At open beck bridges. Anchors are used on track approaching open deck bridges, every third tie should be box-anchored for at least two rail lengths off each end of the bridge.

At rail crossings. As rail crossings where anchors are used, every third tie should be box anchored for at least two rail lengths in all directions from the crossing.

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