2. A rigid coupling is a unit of hardware used to
join two shafts within a motor or mechanical
system.
A device that is used to connect
two shafts together for the purpose
of power transmission.
• Used to connect shafts that are
precisely aligned
3. Simple, economical
Low moment of inertia
Driving and driven shafts maintain relative
angular position
4. Metallic versions can accommodate
virtually
o shaft misalignment, and non-metallic
versions only trivial amounts of
misalignment - and some suasion during
operation will lead to some radial
misalignment if both shafts are fully
radials
constrained.
5. Devices with enough internal clearances or
flexible members (flexible shafts, spring
washers, and so on) to accommodate any
incidental shaft misalignment without a
flexible coupling; consumer products,
material handling equipment
6. All rigid couplings are precision-machined
from bar, offering better strength, fit, and
overall quality than cast or powdered metal
couplings.
Machined to tighter tolerances than those of
other manufacturers, improving fit between
shaft and bore, dynamic balance, and so on.
Full range of sizes, materials, and shaft
attachment options available
8. Poor coupling selection
Operation beyond design capabilities.
The only way to improve coupling life is to
understand what caused the failure and to
correct it prior to installing a new coupling.
Some external signs that indicate potential
coupling failure include:
Abnormal noise, such as screeching,
squealing or chattering
Failed seals indicated by lubricant leakage
or contamination
