GB/T 40808.4-2026 Active National standards

GB/T 40808.4-2026 Environmental evaluation of machine tools—Part 4:Principles for measuring metalforming machinery with respect to energy efficiency

Publish Date: 2026-02-27 Implement Date: 2026-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 40808.4-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Forging and pressing machinery

ICS Name: Forging equipment, stamping machines, and shearing machines

Publish Date: 2026-02-27

Implement Date: 2026-09-01

Pages: 92 pages

Scope

This document specifies the technical requirements and measures for energy testing procedures adopted by designers, manufacturers, and suppliers of forging machinery, with the aim of obtaining reproducible data on the energy supplied under specified conditions. In addition, this document also prescribes methods for quantifying the energy supplied to components, so as to allocate their proportions according to the machine tool functions described in GB/T 40808.1—2021. Together with GB/T 40808.1—2021 and GB/T 40808.2—2025, this document covers all the energy requirements of hydraulic (servo) and mechanical (servo) presses, rotary head presses, and bending machines, bending machines, and laser cutting machines when used as intended and under the conditions anticipated by the manufacturer. An example of how to conduct energy assessments for metal forming machines is provided in the appendix. This document applies to all types of machine tools that transfer force mechanically or use lasers to transfer energy, thereby cutting, forming, or processing metals or other materials using molds installed on sliders, punches, or beams, or driven by them. The size range of such machine tools covers everything from small high-speed machine tools (used for processing small-sized workpieces) to large relatively low-speed machine tools and large workpieces. The main purpose of the machine tools covered by this document is to process metals, but they are also suitable for processing other materials (such as cardboard, plastics, rubber, leather, etc.) in the same way. This document also applies to auxiliary devices provided as indispensable components of forging machinery, as well as machine tools that form part of integrated manufacturing systems, whose energy requirements are comparable to those of standalone machine tools. This document does not provide test procedures for the energy requirements of tools or molds installed on forging machinery. This document does not apply to ma