They are not the same concept. Rack and pinion is a specific mechanical structure responsible for converting the rotation of the steering wheel into the steering of the wheels; while power steering is an auxiliary system designed to reduce the amount of effort required by the driver during steering.

Although rack and pinion steering systems are very popular in ordinary road vehicles, their application in NASCAR cars is relatively limited. NASCAR cars generally do not use rack and pinion steering systems, but continue to rely on recirculating ball steering systems.

Positive locking means that in a rack and pinion steering system, a specially designed locking device is used to automatically lock or limit the steering angle under certain conditions to prevent the vehicle from oversteering or steering out of control.

Although rack and pinion steering systems are still widely used in passenger cars and small commercial vehicles, other types of steering systems, such as recirculating ball steering systems and Electric Power Steering (EPS) systems, have gradually taken over the market in some high-end models, heavy vehicles and off-road vehicles.

In 1965, Ford introduced the Ford Mustang, which became the first mass-produced American model to widely adopt rack-and-pinion steering. The launch of the Ford Mustang marked an important step for American automakers in steering technology and also represented the increasing demand for better handling in the U.S. market.

From May 13 to 15, 2025, Lagos, West Africa - Foshan Diamond Auto Parts Co., Ltd. (DKM) will participate in the highly anticipated West Africa Automotive Show (WAAS) and sincerely invites new and old customers to visit the booth to discuss cooperation. This grand event will be held at the Landmark Centre in Lagos, Nigeria.

Exhibition information: ● Exhibition name: Automechanika Dubai 2025 ● Exhibition date: December 9 to 11, 2025 ● Exhibition location: Dubai World Trade Centre, UAE

The exhibition will be held at the International Exhibition Center EXPO in Astana, the capital of Kazakhstan, from April 15 to 17, 2025. We sincerely invite all customers and partners to visit our booth and look forward to discussing industry trends with you, showcasing our latest products and technologies, and deepening our cooperative relationship.

The steering systems of midsize sedans and SUVs are more complex, and the weight of the rack and pinion steering system may increase slightly. Generally speaking, the steering system weight of such vehicles is about 5 to 7 kilograms.

The structure of the recirculating ball steering system is relatively complex, involving screws, nuts, recirculating steel balls and multiple connecting rod components. This complexity makes the system more time-consuming and costly to manufacture and repair. In contrast, the rack and pinion steering system has a simple structure, consisting only of a rack and a pinion, which makes it cheaper to manufacture and relatively easy to maintain.