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Moment of inertia
2 Inertia of cylinder
The moment of inertia of a cylinder may
be obtained from the graphs to the right.
The above graph is
applied for aluminum
(specific gravity: 2.7)
and the lower for steel
(specific gravity: 7.85).
The double-dot-chain lines
indicate the allowable inertia
for each actuator.
(Example)
Material: Aluminum
Diameter: 100mm
Length: 7mm
Form: cylinder
As the diameter is 100mm,
the radius is 50mm.
Therefore, the above graph
would indicate that the inertia is:
Approx. 1.9X10
-4
kg•m
2
(Exact value: 0.000186 kg•m
2
)
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