GB5763-2018

Brake linings for automobiles

汽车用制动器衬片

GB 5763-2018 é uma norma nacional chinesa obrigatória vigente: Brake linings for automobiles. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de out. de 2019.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to brake linings for automobiles (both disc and drum types) manufactured and sold within the Chinese market. It categorizes products based on vehicle classifications defined in GB/T 15089, covering passenger cars (M class), goods vehicles (N class), and trailers (O class). This standard is mandatory for all manufacturers and importers of automotive brake friction materials in China.

Requisitos técnicos

GB 5763-2018 specifies the essential requirements concerning health and safety for automotive brake linings. Firstly, it enforces strict hazardous component limits, explicitly banning the use of asbestos and restricting heavy metals such as cadmium, hexavalent chromium, lead, and mercury to specific mass fraction thresholds. Secondly, the standard mandates rigorous friction performance criteria. For drum linings used in lighter vehicles (M1, M2, N1, O1, O2 classes), it specifies minimum thresholds for normal and high-temperature friction coefficients via small-sample bench testing. For disc pads and heavier vehicle categories, it requires the operational friction coefficient to remain within a ±15% deviation of the manufacturer's appointed value, ensuring no delamination or cracking occurs post-test. Lastly, the standard defines minimum shear strength requirements to ensure structural integrity. It sets specific baseline values for bonded resin-based drum linings, rubber-based drum linings, and disc pads, requiring that a minimum percentage of the lining area remains adhered to the brake shoe after testing. Compliance with these basic health and safety requirements is mandatory for market access.

Métodos de ensaio

The standard outlines specific testing procedures to verify compliance. Asbestos content is determined according to the methods specified in GB/T 23263, while hazardous heavy elements are measured using JC/T 2268. Friction performance is evaluated through two primary methods: the small-sample bench test (referencing GB/T 17469) for certain drum linings, and the drag friction test (referencing GB/T 34007) for disc pads and heavy-vehicle drum linings. Additionally, shear strength is assessed following the protocols in GB/T 22309.

Perguntas frequentes

What products are regulated under GB 5763-2018?

The standard regulates brake linings for automobiles, including both disc pads and drum linings used across various vehicle categories such as M, N, and O classifications.

Are there any significant updates from the previous GB 5763-2008 version?

Yes, the 2018 version is a full-text mandatory standard. It removed previous requirements for appearance and dimensional deviations, and introduced new hazardous substance limits and updated friction performance testing protocols.

Does GB 5763-2018 specify any environmental or health-related requirements?

Manufacturers must ensure their products are completely free of asbestos and that heavy metals like cadmium and lead remain strictly within the specified mass fraction limits.

The summary above provides a high-level overview of GB 5763-2018. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5763-2018 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: Q69
ICS: 43.040.40
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: Ministry of Industry and Information Technology

Relações

Substitui:GB 5763-2008