MS16630C
NOTES:
1. UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN INCHES.
2. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS STANDARD AND THE REFERENCES CITED HEREIN, THE TEXT OF THIS STANDARD SHALL TAKE PRECEDENCE.
3. RECOMMENDED DESIGN LIMITATIONS AND USAGE:
(a) INTENDED USE- TO PROVIDE SHOULDERS FOR POSITIONING AND RETAINING MACHINE COMPONENTS ON SHAFTS.
TAPERED DESIGN PRINCIPLE PERMITS RINGS TO MAINTAIN PRACTICTICALLY CONSTANT CIRCULARITY WITHIN THE LIMITS OF EXPANSION IN NORMAL USE. THE RINGS WITH BEVEL ON INNER CIRCUMFERENCE, WHEN SPRUNG INTO GROOVE WITH TAPERED OUTER WALL CORRESPONDING TO RING BEVEL WILL SELF ADJUST AND PROVIDE SECURE PRESSURE FIT AXIALLY TO TAKE UP END-PLAY. THE USE OF THE FOLLOWING FORMULAS ARE BASED ON THE FACT THAT THE RING MATERIAL WILL NOT FAIL IN COMPRESSION.
LIMITATION ON USE - THE FOLLOWING FORMULAS ARE NOT TO BE USED FOR BRITTLE MATERIALS SUCH AS CAST IRON, ETC.
WARNING: RINGS SHOULD NOT BE OVER EXPANDED DURING INSTALLATION SINCE THIS WILL LEAD TO RING FAILURE. (b) ALLOWABLE THRUST LOAD CAPACITY OF THE RINGS. (ABUTTING COMPONENTS TO HAVE SHARP CORNERS).
P = ALLOWABLE THRUST LOAD (POUNDS) S = SHAFT DIAMETER (INCHES) |
||
P = πSTX |
T = RING THICKNESS (INCHES) |
|
F |
WHERE: |
X = ULTIMATE SHEAR STRENGTH OF THE RING MATERIAL (PSI) 1/ F = FACTOR OF SAFETY |
A FACTOR OF SAFETY, F=4, IS RECOMMENDED, SINCE THE RING UNDER LOAD IS SUBJECTED NOT ONLY TO PURE SHEAR STRESSED BUT ALSO TO BENDING STRESSES.
(c) ALLOWABLE LOAD CAPACITY OF GROOVE WALL =
2/ P = ALLOWABLE COMPRESSION LOAD (POUNDS)
d S = SHAFT DIAMETER (INCHES)
P = πS 2 Y. d = BASIC GROOVE DEPTH OF BEVELED GROOVE (INCHES)
F WHERE: Y = YIELD STRENGTH IN COMPRESSION OF THE GROOVE MATERIAL (PSI)
F = FACTOR OF SAFETY
TO INSURE A SAFE WORKING LOAD, A SAFETY FACTOR, F = 2, IS RECOMMENDED. (d) MINIMUM DISTANCE BETWEEN OUTER GROOVE WALL AND END OF HOUSING =
Z = MINIMUM DISTANCE BEWTWEEN OUTER GROOVE WALL Z = 1.5d AND END OF SHAFT (INCHES)
WHERE: d = GROOVE DEPTH (INCHES)
(e) DEFLECTION, (UNDER LOAD) =
∆
L = L d = GROOVE DEPTH (INCHES)
Ed E = YOUNG'S MODULUS OF ELASTICITY OF GROOVE MATERIAL
2 L = APPLIED LOAD (POUNDS)
∆
L = DEFLECTION, AT LOAD "L" (INCHES)
1/ X = 150,000 PSI ULTIMATE SHEAR STRENGTH FOR RINGS.OF CARBON STEEL AND CORROSION RESISTANT STEEL.
X = 100,000 PSI ULTIMATE SHEAR STRENGTH FOR RINGS OF BERYLLIUM COPPER.
2/ d = HALF OF THE GROOVE DEPTH OF THE BEVELED GROOVE WILL MAINTAIN THE MINIMUM CONTACT AREA OF
2 RING IN GROOVE. ALLOWABLE LOAD CALCULATION SHOULD BE BASED ON d.
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