Resilient Coupling in 1917 and the 2000
series is the latest level of this well
accepted product. This Bibby Transmissions
product has become universally accepted
where reliable protection against shaft
misalignment and vibration is desirable.
Since those early days refinements in
design and material specifications have
kept pace with advancing technology,
achieving significant improvements in power/weight ratios.
• Horizontally Split Cover
• General purpose
• Easy access to grid minimises downtime
• Ideal for limited space applications
• Stop lug in cover prevents spinning
during reversing service
• Vertically Split Cover
• General purpose
• Ideal for higher running speeds
High Performance
The Bibby Transmissions Series 2000 Taper
Grid Coupling continues that tradition.
The tapered grid is made from high
tensile alloy steel which is carefully
formed to the grid shape before
hardening and tempering under
controlled conditions. The grid surface is
then shot-peened. This process leaves the
grid spring with a residually stressed
surface layer which is in compression and
which impedes the propagation of cracks.
Since nearly all fatigue and stress
corrosion failures originate at the surface
of a part, the layer of compressive stress
induced by shot-peening produces a
dramatic increase in the working life and
fatigue strength of the grid. This
technological improvement in
manufacturing process coupled with
precise monitoring of raw material
specification and control of trapezoidal
shape, permits Bibby Transmissions to
offer state of the art grid springs of high
performance and reliability.
Scientific Design
The hub is precision manufactured from
high quality materials, with the hub tooth
profile scientifically designed to permit
progressive loading under torsional shock
conditions. The combination of tapered
grid and precision manufactured hub
provides a high performance transmission
arrangement which is easily assembled,
extremely capable of cushioning shock
loads and allowing for compensation for
drive misalignments.
Long Life
Whilst the coupling is designed for long
life under arduous conditions,
maintenance and taper grid replacement
can be performed quickly and easily
without the need to move and realign
connected equipment.
Two cover design options are available in
the Bibby Transmissions Series 2000 range of couplings. Both designs have
beencarefully engineered to match the qualitystandards of the key components
and to provide a shaft coupling which is highlyreliable and easy to install.
Recommended Fits between
Shafts and Hubs
Coupling bore tolerances for sizes up to
and including 2090T can be specified to
suit a transition fit with the shaft. In
these instances axial restraint of the hub
should be provided by set screws. Relative
sizes and positions are given in the
following table.
For sizes above 2090T or where interference
fits are preferred for smaller coupling
sizes, bore tolerances should provide an
interference fit between shaft and hub of
0.0002 to 0.0007mm per mm of diameter
