Definition and classification

A straight round shaft, commonly referred to as a straight shaft, is a type of shaft component with a straight axis. According to the different shapes of the axis, shafts can be divided into three categories: straight shafts, crankshafts, and flexible shafts (flexible shafts). Due to its simple structure and stable force transmission, straight axles are widely used in conventional power transmission scenarios, such as drive shafts, step shafts, and other industrial products. Even bicycle axles are typical examples of straight axles in daily life.

Structural features

The main structural characteristics of a linear round Shaft include:
The Shaft  is a straight line: This is the most basic characteristic of a straight Shaft, which makes it stable when transmitting torque and motion.
Cylindrical shape: The straight shaft is usually cylindrical, which is conducive to the machining and assembly of the shaft, while also ensuring the strength and stiffness of the shaft.
Diversified structural forms: According to specific application requirements, straight shafts can be designed in various forms such as solid shafts, hollow shafts, stepped shafts, etc. Solid shaft structure is simple and suitable for general transmission scenarios; Hollow shafts can reduce weight and are suitable for situations that require weight reduction; The stepped shaft meets the assembly requirements of different components through shaft segments of different diameters.

Application of round linear shafting

The application scenarios of linear and round shaft are very extensive, mainly including:
Ordinary transmission shaft: In mechanical transmission systems, a straight shaft is often used as a transmission shaft to transmit torque and motion, such as the transmission shaft in cars and the spindle in machine tools.
Supporting rotating parts: Straight shafts can also be used to support rotating parts such as gears, pulleys, etc., ensuring that these parts remain stable during rotation.
Linear motion guidance: When combined with linear ball bearings, a circular axis guidance system can be formed to provide high-precision linear motion guidance for industrial machinery and equipment, such as CNC machine tools, robots, material handling equipment, etc.