ASME B29.10:2001 pdf download ASME STANDARDS COMMITTEE B29 Chains, Attachments, and Sprockets for Power Transmission and Conveying
1 ROLLER CHAIN
1.1 Nomenclature
The following definitions are illustrated in Fig. 1.connecting link (cotter pin type): an outside link consistingof a pin link plate E, two assembled pins G-G a detachable pin link plate D, and two cotters HH. Three typesof detachable pin link plates are available; one with aslip fit, one with a degree of press fit (drive fit), and onewith a full press fit (as in conventional chain con-struction).
connecting link (spring clip type): a connecting link gener.ally as described above, except that the detachable linkplate is retained by a one-piece spring clip K that engagesgrooves cut in the ends of the pins.
offset link: a link consisting of two offset link plates -a bushing B, a roller C, a removable pin and cotter H
offset section: a two-link section consisting of a roller linkand an offset link, which are connected by a rivetedpress-fit pin.
pin link: an outside link consisting of two pin link platesE-E assembled with two pins F-F
roller chain: a series of alternately assembled roller linksand pin links in which the pins articulate inside thebushings and the rollers are free to turn on the bushingsPins and bushings are press fit in their respective linkplates. Roller chain may be single strand, having one rowof roller links, or multiple strand, having more than onerow of roller links, and in which center plates L arelocated between the strands of roller links. Center platesmay be slip fit or press fit on the pin as agreed betweenthe chain manufacturer and user.
roller link: an inside link consisting of two roller linkplates A-A，two bushings B-B,and wo rollers CC.
1.2 General Proportions
(a) The roller diameter is approximately % x pitch.(b) The chain width is defined as the distance betweenroller link plates and equals approximately x chainpitch.
(c) The pin diameter is approximately % x pitch or
one-half of the roller diameter.(d) The thickness of link plates for the standard seriesis approximately x pitch.(e) The thickness of link plates for the heavy serieschain of any pitch is approximately that of the nextlarger pitch standard series chain.
(f) The maximum height of roller link plates is 0.95xpitch.
(g) The maximum height of pin link plates is 0.82xpitch.
(h) Although chamfers are shown on the link platesillustrated, chamfering is not a requirement and is doneat the option of the manufacturer.
1.3 Numbering System -Standard Chain Numbers
For the chains shown in this Standard, the right-handdigit in the chain designation is zero for roller chains ofthe usual proportions, 1 for a lightweight chain, and 5for a rollerless bushing chain. The numbers to the leftof the righthand digit denote the number of % in. inthe pitch. The letter H following the chain numberdenotes the heavy series. The hyphenated number 2suffixed to the chain number denotes a double strand;3, a triple strand; 4, a quadruple strand chain; etc.
Heavy series chains made in % in. (1905 mm) andlarger pitches differ from the standard series in thicknessof link plates. Their value is only in the acceptance ofhigher loads during operation at lower speeds.
1.4 Chain Strength Requirements
1.4.1 Minimum Ultimate Tensile Strength(a) Single Strand Chain. Standard series single strandchains meeting the requirements of this Standard willhave a minimum ultimate tensile strength equal to orgreater than the values listed in Table 1A or 1B.(b) Multiple Strand Chain. For multiple strand chainthe minimum ultimate tensile strength equals that of asingle strand multiplied by the number of strands.
ASME B29.10:2001 pdf download
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