• Fail safe
• Bi-directional
• Automatic operation
• Lubrication free
• Externally mounted
These important safety devices have been
developed to provide a facility whereby
gravitational run-back of loaded conveyors
with the consequent load spillage,
equipment damage and potential personnel
injury, is prevented automatically during
conveyor stoppages.

The units, which are fail-safe, operate
when the conveyor stops for any reason,
without reliance on any power or manual
operation. They have replaced
conventional brake systems where these
were used to prevent run-back, and
which were dependent on an external
power source for operation.

They occupy comparatively little space,
are easy to install, lubrication free and
require virtually no maintenance.

A major advance in backstop design

The Series 300 range of Backstop Units
from Bibby Transmissions incorporates the
knowledge and operational experience
gained over many years of supplying
Backstops to major gearbox
manufacturers and users.

A prime feature of the design is the
centralised auxiliary plate on which the
load pins are located. This has the
advantage of enabling the units to be
used for either clockwise or anti-clockwise
free rotation with only minor changes of
re-configuration required, giving
operators greater flexibility in use.

A further advantage is a major reduction
in the spare parts stockholding required,
keeping operational costs to a minimum.
Series 300 Backstops offer all of the
reliability and proven design excellence
for which Bibby Transmissions have
gained a high reputation over many years
of successful operation. They are used
throughout the world in mining,
quarrying, water pumping stations -
indeed any application where shaft
reversal, brought about by a stoppage,
presents a costly or hazardous situation.