ASME B29-200 pdf download WELDED-STEEL-TYPE MILL CHAINS, WELDED-STEEL-TYPE DRAG CHAINS, ATTACHMENTS, AND SPROCKET TEETH Incorporating ASME B29.16M and ASME B29.18M
1 DEFINITION welded-steel-type mill chains: a series of identical welded offset links having barrels to contact the sprocket teeth, and pins which articulate in the barrels of the links. Pins are fixed in the sidebar pitch holes by either press fits and/or mechanical locks, such as flats, to prevent rotation of the pins in the sidebar pitch holes.
2 GENERAL CHAIN PROPORTIONS AND DESIGNATIONS
2.1 Minimum Ultimate Tensile Strength The minimum ultimate tensile strength (M.U.T.S.) for chain covered by this Standard, is the minimum force at which an unused, undamaged, chain could fail when subjected to a single tensile loading test. (a) WARNING: The minimum ultimate tensile strength is NOT a “working load.” The M.U.T.S. 2 greatly exceeds the maximum force that may be applied to the chain. (b) Test procedure. A tensile force is slowly applied, in uniaxial direction, to the ends of the chain sample.
(c) The tensile test is a destructive test. Even though the chain may not visibly fail when subjected to the minimum ultimate tensile force, it will have been dam- aged and will be unfit for service.
2.2 Measuring Load Measuring load should be 5 times the weight of 10 ft of chain, rounded to the nearest 100 lbs.
2.3 Dimensions for Chain Links To assure interchangeability of links as produced by different makers of chain, standard maximum and minimum dimensions are adopted. They are not actual dimensions used in manufacturing, but limiting dimen- sions, maximum or minimum, required to assure the desired interchangeability. However, due to minor varia- tions in barrel configurations, coupling chains of differ- ent manufacture should be held to a minimum.