This standard specifies the type, basic parameter and main dimension of LZ, LZD, LZJ and LZZ gear coupling with pin elastomer (hereinafter referred to as "coupling"), as well as provides the technical requirements, inspection rules, marking, packing and storage hereof.
For the purposes of this standard, the said gear coupling is applicable to coupling the transmission shafting of two coaxial lines, and functions as two-shaft relative displacement compensation and general vibration reduction. Its working temperature: -20℃~+70℃ and transmission nominal torque 112N?m~2,800,000N?m.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.
GB/T 191 "Packaging-Pictorial Markings for Handling of Goods"
GB/T 699 "Quality Carbon Structural Steels"
GB/T 3852 "Types and Dimensions for Coupling Bores and their Connection"
GB/T 4879 "Rustproof Packaging"
GB/T 5783 "Hexagon Head Bolts-Full Thread"
GB/T 6388 "Transport Package Shipping Mark"
GB/T 11352 "Cast Carbon Steels for General Engineering Purposes"
GB/T 12458 "Coupling-Classification"
GB/T 13384 "General Specifications for Packing of Mechanical and Electrical Products"
3 Classification
3.1 Type
The coupling is divided into four types, see Table 1.
3.2 Type and designation
Type and designation of the coupling shall meet the requirements of GB/T 12458.
