Abstract： ASME B29.28:2015 pdf download.High-Strength Chains for Power Transmission and Tension Linkages. 2.3 Numbering System For chains covered in this Standard, the right-hand digit in the number is a zero. The numbers to the lelt of the right-han...

ASME B29.28:2015 pdf download.High-Strength Chains for Power Transmission and Tension Linkages.

2.3 Numbering System

For chains covered in this Standard, the right-hand digit in the number is a zero. The numbers to the lelt of the right-hand

digit denote the number of eighthsof-an-inch in the chain pitch. The letters following the chain number shall be ‘lIP.,” with the letter ‘H” denoting heavy series and the letter ‘E” denoting high-tensile strength.

2.4 Chain Strength Requirements

2.4.1 Minimum Ultimate Tensile Strength. The minimum ultimate tensile strength (M.U,TS,) for chains coyL red in this Standard is

the minimum force at which an unused, undamaged chain could I.iil when subjected to a single tensile loading test.

WARNING: The M.U.T.S. IsNOTa worlilng load! The M.U.T.S. greatly esceeds the mavimurn force that may be applied to the chain in

service.

(a) TesS Spthmtrt A length of chain, containing not less than live free pitches. shall be submitted for testing.

(I’) Test Procedure. A tensile force shall be applied slowly, not to esceed 2.0 ut/mm (50.8 mm/mm), in a uniaxial direction, to

the ends of the test specimen.

fc) Conformance. Chains conforming to this Standard shall have a M.U.T.S. equal to or greater than the value listed for that

specific chain listed in Table I or 1M.

VIARNTNG: The tensile teal is a destructive lest! Even though lhc chain might not visibly fail whrn subjected to the minimum

ullimale lensile force, It will have been damaged and will be unfit lot service,

24.2 Minimum Dynamic Strength. Only high- strength chains are subject to the minimum dynamk strength requirement; connecting links are no.

WARNING: The dynamic lest values are not valid characteristics lot designing actual applications. Neither the specified values nor the test results are to be Interpreted as allowable working loads.

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