This standard specifies the types and basic parameters, technical requirements, test methods and inspection rules, marking, packaging, transportation, and storage of planar enveloping toroidal worm reducers (including planar secondary enveloping toroidal worm reducers, hereinafter referred to as reducers). This standard is applicable to reducers for metallurgical, mining, lifting, transportation, construction, petroleum, chemical, aerospace, marine equipment, or precision transmission. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 191 Packaging, Storage, and Transportation Graphical Symbols (GB/T 191-2008, ISO 780:1997, MOD) GB/T 699 High quality carbon structural steel GB/T 1176 Technical Conditions for Cast Copper Alloy (GB/T 1176-1987, neq ISO 1338:1977) GB/T 1184-1996 Shape and Position Tolerances without Individual Tolerance Values (eqv ISO 2768-2:1989) GB/T 3077 Alloy Structural Steel (GB/T 3077-1999, neq DIN EN 10083-1:1991) GB/T 9439-1988 Gray Iron Castings GB/T10089-1988 Cylindrical Worms Worm Gear Accuracy (neq DIN 3975:1980) GB/T 13306 Label GB/T 13384 General Technical Conditions for Packaging of Mechanical and Electrical Products GB/T 13819 Copper Alloy Castings GB/T 16848-1997 Accuracy of Straight Profile Toroidal Worms and Worm Gears GB/T 17107 Structural Steel Grades and Mechanical Properties for Forgings JB/T 5000.12 General Technical Conditions for Heavy Machinery Part 12: Coating JB/T 5558-1991 Loading Test Method for Worm Reducers
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