Center Buffer Couplers CBC in LHB Coaches Unveiled: Part 1 various Parts..

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Center Buffer Coupler (CBC)
The coupler provides a means of mechanically connecting individual adjacent vehicles
to make a train. The coupler is located at both ends of each vehicle. When connected
to a coupler of an adjacent vehicle, it allows the vehicles to move independently to
accommodate track curvature and elevation change while remaining connected
(coupled) together.
The coupler is opened manually using the coupler operating rod and is closed
automatically when the couplers on adjacent vehicles are mated. The coupler
automatically locks when fully mated.
LHB coaches have been provided with tight lock centre buffer couplers instead of
screw coupling.
Couplers are AAR-H type and have anticlimbing features because of vertical
interlocking. Couplers have adequate strength for:
 Satisfactory hauling of a train of 26 coaches at 110 kmph
 Satisfactory hauling of a train of 18 coaches at 160 kmph
Coupling is possible under angular misalignment both horizontally and vertically. The
coupler permits coupled trains to negotiate vertical and horizontal curves and allows
rotational movements. The draw gear ensures cushioning effective in both buff and
draft.