The 4 inch to 8 inch red PU swivel casters with brakes are a comprehensive mobile equipment accessory with excellent performance. Firstly, this series of wheels are made of red PU material, which is a synthetic material with high abrasion and tear resistance.The PU material is not only able to withstand heavy loads for long periods of time, but also maintains good performance under a variety of harsh working conditions. Secondly, the wheels range from 4 inches to 8 inches in diameter, making them suitable for different types of equipment. This adjustable design allows users to choose the most suitable size for their specific needs.
This series of casters is equipped with a reliable braking system to ensure that the equipment can stop steadily when needed. This brake system, usually made of high-strength metal, is easy to operate and highly responsive. In practice, this brake system not only prevents the equipment from sliding accidentally, but also provides additional safety during handling.
In addition to these basic characteristics, the caster wheels in this series offer other significant advantages. For example, they feature an optimized bearing design, which not only reduces friction but also extends service life. In addition, the surface of the wheels has been specially treated to increase grip, which enables the equipment to maintain good stability on floors made of different materials. Together, these features make up the comprehensive advantages of this wheel, making it ideal for use in a wide range of fields, including industry, warehousing and logistics.
Technical Specifications and Performance Tests
The 4″ to 8″ red PU swivel caster wheels with brakes excel in terms of technical specifications. They have a wide range of weight capacity, ranging from tens of kilograms for light equipment to hundreds of kilograms for heavy equipment. An 8-inch wheel, for example, has a maximum load capacity of up to 360 kilograms, while a 4-inch wheel can handle about 180 kilograms. This wide range of load bearing capacity makes the wheels suitable for different types of mobile equipment, be it light carts or heavy duty racking systems.
As far as materials are concerned, these casters are made of high-quality polyurethane, which is known for its excellent abrasion resistance, tear resistance and chemical resistance. According to studies, PU materials last more than 30% longer than ordinary rubber materials. This means that under the same conditions of use, PU wheels can be replaced less frequently, thus reducing maintenance costs.
Several rigorous tests were conducted to verify the actual performance of these wheels. These included load tests, durability tests and environmental adaptability tests. Load tests showed that these wheels maintain stable rolling performance even under full load. The durability test showed that the wheels remained in good working order after thousands of hours of continuous use. Environmental adaptability tests prove their reliable performance in high and low temperatures, ensuring stable operation in a wide range of conditions.
These detailed technical specifications and performance test results fully demonstrate the excellent performance of 4“ to 8” red PU swivel wheels with brakes in real-world applications. They not only meet the various stringent requirements for wheels in industrial and commercial environments, but also bring long-term cost-effectiveness to organizations.

Application Scenarios
The 4″ to 8″ red PU swivel wheels with brakes show a wide range of application potential in several industries. In the industrial manufacturing sector, these wheels are commonly used in various types of heavy equipment such as forklifts, hand hydraulic trucks, and handling trucks. These machines are often subjected to heavy weights and frequent movements, and these wheels ensure stability and safety thanks to their high load-bearing capacity and reliable braking system. For example, in automotive manufacturing plants, forklifts frequently travel between production lines, moving parts weighing several tons. The use of these wheels effectively reduces equipment wear and improves productivity.
In the warehousing and logistics industry, these casters also play an important role. Carts, racks and motorized pallet trucks in warehouses need to be flexible and stable in order to move goods quickly and accurately. The lightweight design and optimized bearings of these wheels allow the equipment to steer flexibly in tight spaces while ensuring that goods do not slip during handling. For example, in large e-commerce warehouses such as Amazon, tens of thousands of items need to be moved quickly and accurately to their designated locations every day. The use of these wheels not only improves efficiency, but also reduces operational risks.
In addition, these caster wheels are also widely used in medical and office settings. Hospital beds, operating tables and medical trolleys need to be moved frequently, but they must be kept quiet and stable so as not to interfere with patient rest or surgical procedures. The quiet design and braking features of these wheels fulfill these needs. In office environments, filing cabinets and conference tables also need to have some mobility, but also need to be quiet and stable. The high quality materials and careful design of these wheels ensure that they will perform well in any situation.
Product Specifications
1) Wheel diameter: 4" 5" 6" 8" Medium Caster Wheels
2) Load Capacity: 180-360kg Swivel/Fixed/Brake Caster Wheels
3) Material: TPU Medium Duty Caster Wheel
4) Bearing: Double bearing
5) Fixed / Swivel / Brake (can be with side brake or total brake)
6) Color: Purplish Red
Available Sizes
Product name |
Material |
Plated finish |
Wheel bearing |
Loading capacity (kg) |
Wheel diameter (mm) |
Wheel width (mm) |
Plate thickness (mm) |
Fork thickness (mm) |
Top plate size (mm) |
Hole centre (mm) |
Setting height (mm) |
4"-8" medium heavy duty swivel caster (purplish red) |
TPU |
Zinc |
Double bearing |
180 |
100 |
38 |
4 |
3 |
110*96 102*102 |
84*71 78*78 |
142 |
280 |
125 |
38 |
4 |
3 |
167 |
320 |
150 |
38 |
4 |
3 |
192 |
360 |
200 |
38 |
4 |
3 |
242 |


