COMPRESSION SPRINGS
Mechanical Properties of some Spring Wires (0.0329 inch = 1 mm)
Formulas for the Dimensional characteristics of compression springs.
Largest Shear Stress
where
The Spring Rate
End-Condition Constants α for Helical Compression Springs Condition for absolute stability or Buckling criterion (Steel)
Solid Safe Criterionτ all ≤ Ssy
Maximum Allowable Torsional Stress for Helical Compression Springs in Static Application
BEARINGS
= application factor(1 Lb. = 4.448 N)
SPUR GEARS
,
, Where V is in ft/min, ‘n’ in rpm
, V = π d n / 60Wt = H/V Where V is in m/s, ‘n’ in rpm
Surface Compressive Stress (Hertzian Stress)
V-BELT
,
(Open Belt)
,
FLAT BELTS
, , ,
, (Open Belt)
, , , ,,
: :
CHAIN DRIVES
, , ,
,
,
AREA MOMENT METHOD
AREAS AND CETROIDAL DISTANCES FOR MOMENT DIAGRAM
POWER SCREWS
BOLTED AND RIVETED JOINTS LOADED IN SHEAR
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