Category SAE Standards

For engineers working with automatic transmissions and transaxles, clear communication of power flow and component relationships is essential. SAE J647 provides a recommended practice for creating and interpreting schematic diagrams that illustrate the functional interrelations of gearing, clutches, hydrodynamic units,…

For self-propelled sweepers that rely entirely on pneumatic conveyance to collect and transfer sweepings, the suction/blower fan is the heart of the system. SAE J1792-2-2015 provides a rigorous, repeatable test method to measure and disclose the performance of these fans.…

Introduction to SAE J2426-2021 This SAE Recommended Practice establishes standardized test procedures for conducting simulated dynamic lateral rollover restraint system tests for heavy trucks. The purpose is to ensure consistent and comparable evaluation of occupant restraint systems under lateral rollover…

Measurement of elastic properties of friction materials is critical for brake pad quality control and lining characterization. The SAE J3175:2024 standard provides a consistent non-destructive ultrasonic test method to determine the Normalized Elastic Constant of Friction Material (NECFM) on finished…

Safety signage on ready mixed concrete trucks is critical to protect operators and bystanders from hazards such as chute pinch points, drum rotation, concrete burns, and power line electrocution. The SAE J3024-2024 standard provides a unified catalog of safety sign…

In the world of medium and heavy-duty commercial vehicles, clear communication of electrical system information is critical. SAE J2221-2019 provides a standardized set of graphic symbols for electrical circuit diagrams, enabling engineers, suppliers, and service technicians to troubleshoot and understand…

Brake squeal is a common NVH (Noise, Vibration, and Harshness) concern that affects vehicle comfort and perceived quality. To help engineers consistently evaluate brake squeal noise under vehicle-level conditions, SAE International published J2625-2017, a recommended practice for automotive vehicle brake…

Purpose and Scope of SAE J2975-2020 SAE J2975-2020 is a recommended practice that establishes a standardized and repeatable method for analyzing the chemical constituents of new and unused brake friction materials. The primary focus is on measuring copper and other…

Overview and Rationale Brake friction materials, including disc brake pads, drum brake shoes, and friction blocks, readily adsorb moisture from the atmosphere. This moisture can significantly alter physical properties such as thickness, weight, shape, compressibility, hardness, and coefficient of friction,…

Overview of SAE J2377 SAE J2377 provides a standardized test procedure for evaluating the ability of truck-tractors and towing trucks to supply compressed air to the reservoirs and parking brake chambers of towed vehicles on highways. This recommended practice is…