AAR F Couplers FR Rotatable Couplers Anti Decoupling Interlock Coupler

AAR F Couplers FR Rotatable Couplers Anti Decoupling Interlock Coupler

1. Brief introduction:

The F-type interlocking coupler was developed in 1947 based on the H-type tight coupling designed for passenger cars and became the standard coupler set by the AAR in 1954.
Constructed from E-grade steel, the F coupler meets the AAR M201 standards, its profile aligns with AAR S117 specifications, and its manufacturing adheres to AAR M211 regulations.
The FR rotatable couplers were developed to fulfill the needs of unloading bulk goods such as coal without needing to uncouple or tip. Built on the F-type design, FR Interlock rotatable couplers are extensively used in heavy unit freight wagons and have greatly enhanced transportation efficiency.

2. Key technical characteristics include:

•  Exceptional structural strength, minimal coupling space, features that prevent uncoupling, functions for interlocking, and automatic centering ensure reliable performance with good capability for navigating curves.
• There are two devices located beneath the hook head: one to prevent falling and another to provide additional interlock support.
• The touch profile gap measures 9.5mm, which is 51% smaller than that of the E-type coupler.
• The coupler's bottom support at its front end effectively stops broken couplers from dropping onto the railway, thus preventing serious accidents.

3. Main technical parameters: