ASME B29.21M:1996 pdf download 700 CLASS WELDED STEEL AND CAST CHAINS, ATACHMENTS AND SPROOKETS FOR WATER AND SEWAGE TREATMENT PLANTS
1 NOMENCLATURE
1.1 Straight Sidebar Type
A series of identical offset links having barrels to con- tact the sprocket teeth and pins which articulate in the barrels of links. Pins are fixed in the sidebar pitch holes by pressfits andor mechanical locks, such as flats, to prevent rotation of the pins in the sidebar pitch holes.
1.2 Curved Sidebar
Type A series of identical offset links having barrels to con- tact the sprocket teeth, curved sidebars which contact sprocket flanges to provide additional link support and wearing surfaces, and pins which articulated in the barrels of the links. Pins are fixed in the sidebar pitch holes by pressfits and/or mechanical locks, such as flats, to prevent rotation of the pins in the sidebar pitch holes.
1.3 Dimensions for Chain Links
To assure interchangeability of links as produced bydifferent makers of chain, standard maximum and mini-mum dimensions are adopted. They are not actual dimen-sions used in manufacturing, but limiting dimensions-maximum or minimum-required to assure the desiredinterchangeability.
All dimensions are given in a decimal-inch system inaccordance with ANSI B87.1-1965.The metric equiva-lent dimensions are for reference only, per ANSlZ210.1-1976.
2 DEFINITIONS
2.1 Minimum Ultimate Strength (M.U.S.)
The minimum ultimate strength (M.U.S.) is a factoredstatistical value for standards, which does not necessarilyreflect the typical ultimate strength of the chain. Manufacturer should be consulted for additional information.
2.2 Proof Load for Cast Chains
Nondestructive testing of each chain strand at the proofload, a load which is greater than the load expected tobe applied to the chain in service, gives the user assurancethat the chain meets the requirements of this Standard.All cast chains must be subjected to this test.
2.3 Working Load Capacities of Chains
For working load capacities of each chain, consult theindividual chain manufacturer.
2.4 Strand Length Tolerance
2.4.1 Welded Steel Chains. New chains under ameasuring load may be over minimum length up to 0.38in. in 120 in.(9.7 mm in 3048 mm), but must not be lessthan minimum length.
2.4.2 Cast Chains. New chains under a measuringload may be over minimum length up to 0.75 in. in 120in. (19.05 mm in 3048 mm), but must not be less thanminimum length.
2.5 Weights
Chain weights are listed in manufacturer’s catalogs
ASME B29.21M:1996 pdf download
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