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Description / Abstract:
FOREWORD
This Standard is a consolidation of two ASME standards, ASME
B29.16M-1995 (Welded- Steel-Type Mill Chains, Attachments, and
Sprocket Teeth) and ASME B29.18M-1993 (Welded-Steel-Type Drag
Chains, Attachments, and Sprocket Teeth). These two standards were
combined into one because of the similarity of construction and the
usual applications for the two types of chains.
The welded-steel-type mill chains (B29.16M) were developed to
provide a series of steel chains similar to cast chains of the
detachable, mill, and combination types. Although the
welded-steel-type mill chains were introduced many years ago for
the forest products industries, their expanded usage in a variety
of materials handling and drive applications in recent years
stimulated standardization of the basic types.
In September 1967, a subcommittee of ANSI Sectional Committee
B29 under the sponsorship of ASME and SAE, was appointed to develop
a standard for welded-steel-type mill chains, attachments, and
sprocket teeth.
The 1981 revision included updating to the current ASME
Standards format and symbols covering chains and sprockets. In
addition, chain number W106 was added to the Standard
The 1995 revision included the addition of chain number
W855 and the removal of attachments H1, H2, R1, and RR from the
Standard due to inactivity. Also added was the minimum bolt hole
diameter required for the bolt diameter given for a particular
attachment. The minimum ultimate tensile strength (M.U.T.S.)
definition was also modified.
The welded-steel-type drag chains (B29.18M) were developed to
provide a series of steel chains similar to cast drag chains in the
offset and combination types. Welded steel drag chains were
originally introduced for the forest products industries and their
expanded usage in recent years called for standardization of basic
sizes.
In September 1967, a subcommittee of ANSI Sectional Committee
B29 was appointed with American Chain Association members from the
engineering steel chain industry to develop a standard for welded
steel chains, attachments, and sprockets including the drag
type.
The American National Standards Institute approved the first
edition of ASME B29.18M in 1974.
The 1981 revision included updating to the current ANSI
Standards format and symbols covering chains and sprockets. Minimum
ultimate strengths were reviewed and updated, where necessary.
The 1993 revision included a modified definition of minimum
ultimate tensile strength (M.U.T.S.). An optional barrel
configuration was added to Table 1 and an optional wing
configuration was added to Table 9.
In the 2001 revision of ASME B29.18M a correction has been made
to Table 2 for M.U.T.S. kN values shown in the metric values. Also,
the nomenclature for the sprocket tooth form in section 4 has been
corrected and the pitch line (C) clearance changed to more closely
conform with industry standard.
Both ASME B29.16M and ASME B29.18M were developed by their
respective committees to involve only those dimensions which
influence interchangeability. To promote the use of each in the
international market, the metric equivalents of all dimensions are
given.
The 2001 revisions of both ASME B29.16M and ASME B29.18M have
been incorporated to form the ASME B29.200-2001 standard. This
Standard was approved as an American National Standard on December
11, 2001