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GB/T 11355-2025: V-belt and V-ribbed belt drives - Calculation of power ratings
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 11355-2025	English	199	Add to Cart	3 days [Need to translate]	V-belt and V-ribbed belt drives - Calculation of power ratings
GB/T 11355-2008	English	149	Add to Cart	2 days [Need to translate]	V-belt and V-ribbed belt drives -- Calculation of power ratings
GB/T 11355-1989	English	199	Add to Cart	3 days [Need to translate]	V-belt drives--Calculation of power ratings

GB/T 11355-2025: V-belt and V-ribbed belt drives - Calculation of power ratings

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ICS 21.220.10 CCSJ18 National Standards of the People's Republic of China Replaces GB/T 11355-2008 Calculation of rated power for V-belt and multi-ribbed belt drives Published on 2025-10-31 Implemented on May 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 11355-2008 "Calculation of Rated Power for V-Belt and Multi-Wedge Belt Drives" and is consistent with GB/T 11355-2008. Compared to previous versions, aside from structural adjustments and editorial changes, the main technical changes are as follows. ---Added terms and definitions (see Chapter 3). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee on Standardization of Pulleys and Belts (SAC/TC428). This document was drafted by. Anhui Zhongliang Intelligent Transmission Technology Co., Ltd., Hubei University of Automotive Technology, and Jiamusi Huier Rubber & Plastics Co., Ltd. The company, Ningbo Jaguar Transmission Systems Co., Ltd., China Machinery Productivity Promotion Center Co., Ltd., Zhejiang Fengmao Technology Co., Ltd., Ningbo Kai Chi Adhesive Belt Co., Ltd., Sanlix Co., Ltd., Shaoxing Huafangyuan Transmission Technology Co., Ltd., Jinjiulong Industrial Co., Ltd., Zhejiang Dong Xing Automotive Parts Co., Ltd., Zhejiang Fulong Transmission Technology Co., Ltd., Zhejiang Baoli Rubber & Plastics Co., Ltd., Sichuan Deen Precision Machinery Co., Ltd. Technology Co., Ltd., Jilin University, Shenzhen Hefeng Gear Machinery Co., Ltd., Guangde Tianpeng Industrial Co., Ltd., Dongguan Juri Electric Co., Ltd. Technology Co., Ltd., China Coal Zhangjiakou Coal Mining Machinery Co., Ltd., Changchun University, Zhejiang Sihai New Materials Co., Ltd., Zhejiang Junbo Automotive Parts Co., Ltd., Jiangsu Baoxiang Intelligent Technology Co., Ltd., Qingdao Product Quality Inspection and Research Institute, China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd. The main drafters of this document are. Zhu Shusheng, Wu Yizhen, Ren Aihua, Wang Honggang, Lu Zhaoming, Qin Shuan, Dong Yongxiu, Ying Jianli, and Pan Wandong. Sun Jiahao, Zhang Liujie, Pan Zhaoxing, Xia Mingxiang, Xing Junjie, Xie Longde, Feng Zengming, Cao Xiaolin, Wu Guomiao, Xiong Hongyuan, Xie Hongzhang, Shi Yaochen Huang Jun, Li Chao, Xie Guobao, He Ning, Zhou Peng. The release history of this document and the document it replaces is as follows. ---First published in 1989 as GB/T 11355-1989, and revised for the first time in.2008; ---This is the second revision. Calculation of rated power for V-belt and multi-ribbed belt drives

1 Scope

This document describes the formulas for calculating the rated power of two-wheel industrial V-belt and multi-ribbed belt drive systems. This document applies to general industrial V-belt and multi-ribbed belt drives; it can be used as a reference for other applications.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 6931.1 Belt Drive Terminology Part 1.Basic Terminology GB/T 6931.2 Belt Drive Terminology Part 2.V-Belt and Multi-ribbed Belt Drives

3 Terms and Definitions

The terms and definitions defined in GB/T 6931.1 and GB/T 6931.2, as well as the following terms and definitions, apply to this document. 3.1 Rated power Under the conditions of proper installation and maintenance of the transmission device, and according to the specified geometric dimensions and environmental conditions, within the specified time period, a single root... The maximum power that each wedge of a V-belt and a multi-ribbed belt can transmit. Note. Rated power is a function of the cross-section of the V-belt and multi-ribbed belt, the pitch diameter of the small pulley, and the angular velocity of the small pulley. 4.Calculation Formula The rated power P transmitted per wedge of a single V-belt or multi-wedge belt is calculated according to formula (1). P=K(P1 ΔP1 ΔP2) (1) K= m-1 (1-m- π) P1=dpω C1-C2 dp ÷-C3(dpω)2-C1lg(dpω) êê úú ΔP1=C4ωdplg (1 10 C2 C4dp (1S-1)) ΔP2=C4dpωlg L0 In the formula. m is 5 for V-belts and 4 or 5 for multi-ribbed belts; α --- the wrap angle of the smaller pulley, in radians (rad); P1 --- Basic rated power, in kilowatts (kW); ΔP1 --- The additional power value caused by the transmission ratio, in kilowatts (kW); ...