General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 1151-2023
Introduction
The technical specification of "GB/T 1151-2023 Internal Combustion Engine Main Bearing and Connecting Rod Bearing" provides guidelines for the design, manufacturing, and testing of main and connecting rod bearings used in internal combustion engines. This standard aims to ensure the reliability, durability, and performance of these bearings in engine applications.
The specification covers various aspects such as dimensional requirements, material selection, heat treatment, surface finish, and performance testing. It provides detailed guidelines for the selection of materials, ensuring that the bearings can withstand the high temperature, high load, and high-speed conditions typically encountered in internal combustion engines. The specification also addresses the appropriate heat treatment processes to enhance the mechanical properties of the bearings.
Furthermore, the standard specifies the surface finish requirements to minimize friction and wear, thereby improving the overall efficiency of the engine. It also outlines the performance testing methods, including load capacity, fatigue strength, and wear resistance, to evaluate the quality and reliability of the bearings.
Compliance with "GB/T 1151-2023" ensures that the main and connecting rod bearings used in internal combustion engines meet the necessary technical requirements. By following this standard, engine manufacturers can produce engines with improved performance, reduced maintenance, and enhanced lifespan. Additionally, it provides a common reference for manufacturers, suppliers, and users, facilitating quality control and ensuring the interchangeability of bearings across different engine models.
GB/T 1151-2023 history
2023GB/T 1151-2023 Specifications for main bearing bushes and connecting rod bearing bushes of internal combustion engines
2012GB/T 1151-2012 Internal combustion engines.Main and connecting rod bearings.Specifications
1993GB/T 1151-1993 Internal combustion engines. Main and connecting bearings. Specification