28mm Shaft Pulley

The 28mm shaft pulley is an important mechanical component, typically connected directly to a 1-Phase Electric Motor 3.7kW 5Hp or a 3-Phase Electric Motor 4.0kW 5.5Hp. Thanks to its good load-bearing capacity and efficient power transmission, this pulley is a top choice in drive systems, widely applied in many industries and everyday equipment.

Overview of the 28mm Shaft Pulley Design

Pulleys, also known as sheaves, are essential mechanical devices in power transmission systems. The 28mm shaft pulley features a sturdy design and is manufactured from durable materials such as cast iron, steel, or iron, providing good wear resistance and load-bearing capacity. The simple structure of the pulley allows it to be easily integrated into various motor systems, effectively serving diverse power transmission needs.

Detailed Structure of the 28mm Shaft Pulley

The 28mm shaft pulley is a core mechanical transmission component. Its main structure includes: a sheave (pulley disc) designed with V-belt grooves or flat grooves, a precisely machined 28mm bore with a keyway for torque transmission, and a fixed hub.

The detailed structure of the 28mm shaft pulley includes the following main parts:

• Sheave (Pulley wheel): The outer body whose surface is machined with grooves (1 groove, 2 grooves, or multiple grooves) matching the V-belt cross-section (e.g., A and B section belts) or flat grooves for conveyor belts.
• Bore and Keyway: The center of the pulley is a round hole with standard tolerances for a 28mm diameter. Inside the bore wall, a small slot (keyway) is machined to engage with the key on the motor/gearbox shaft, helping the pulley rotate with the shaft without slipping.
• Hub: The thickened section at the center of the pulley surrounding the bore, which increases contact area and grip when tightening the set screw, fixing the pulley onto the 28mm shaft without axial displacement.
• Manufacturing materials: Usually cast from cast iron, machinery steel, aluminum alloy, or machined from engineering plastics (for light-duty applications).

Technical Specifications of the 28mm Pulley

The 28mm pulley is machined with multiple groove options and pulley profiles, suitable for installation on motors with a 28mm shaft, ensuring stable and efficient power transmission. Below are the basic technical specifications of the product.

Applications of the 28mm Shaft Pulley

The 28mm shaft pulley is used in almost all industries and in various equipment. Some common applications of the 28mm pulley include:

• The 28mm shaft pulley is applied in mechanical transmission systems, playing a role in converting and transmitting force within machinery systems, thereby contributing to optimizing work efficiency.
• The 28mm pulley is used in equipment such as cutting machines, pressing machines, and conveyor systems, serving various production needs.
• Applied in construction equipment such as cranes, hoists, and material handling equipment, the 28mm shaft pulley is used to transport raw materials to required locations.

The 28mm shaft pulley well meets the power transmission needs of various types of machinery thanks to its sturdy structure, stable load-bearing capacity, and easy installation. To view detailed structures, dimensions, and practical usage, you can refer to the pulley video produced by Thanh Thai Motor. In addition, the summary video will help you view many other pulley models and transmission accessories to choose the right product for your system.