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GB/T 19935-2025 蜗杆传动装置的铭牌、中心距、用户提供给制造商的参数 即将实施 发布日期 :  1970-01-01 实施日期 :  2025-12-01

本文件规定了蜗杆传动装置铭牌的要求,给出了中心距的推荐值、用户提供给制造商的参数和要求。
本文件适用于中心距不大于1 000 mm的闭式蜗杆传动的设计和制造。中心距大于1 000 mm或开式蜗杆传动参照使用。本文件并未给出中心高、模数和蜗杆直径系数、轴端的结构和尺寸等参数,由用户和制造商协商约定。

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GB/T 8542-2023e 高速齿轮传动装置技术规范 现行 发布日期 :  1970-01-01 实施日期 :  2023-09-07

This document specifies high speed gear units1) (hereinafter referred to as “gear units”) in terms of product designations, overall dimensions, technical requirements, inspection methods for assembly machines, accompanying files and dedicated tools, and requirements for marking, packaging, transportation and storage.
This document is applicable to gear units in petroleum, chemical, electric power, metallurgy and other industries, with external involute parallel shaft cylindrical hard flanks supported by sliding bearings, with tooth profiles conforming to GB/T 1356, pinion rotational speed not less than 3 000 r/min or pitch line velocity not less than 30 m/s. Technical specifications for other high speed gear units with similar structure can refer to this document.
This document is not applicable to gear units integrated with other rotating equipment such as prime movers or working machines.

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