OEM Shopping Trolley Swivel Wheels White 4 Swivel Caster With Brake

Product Specification

4 Inch White Color Double Ball Bearings Fix Caster Wheel with Blue-white Zinc Resistant Coating For Machine And Equipment

Feature and Functional Purpose

• White Color Wheel (Material Indicator): The white color typically signifies a wheel made of Nylon (PA) or Hard Polyurethane. The functional purpose is to provide a hard, durable, and non-marking rolling surface that will not leave dark scuff marks on floors, ensuring a clean appearance in sensitive environments.

• Double Ball Bearings: The wheel hub contains double ball bearings. The functional purpose is to reduce rotational friction, allowing the wheel to roll smoothly and efficiently under heavy loads, which prolongs the life of the wheel and makes pushing easier.

• Fix Caster (Rigid) Design: Unlike a swivel caster, a fix caster has no rotating top plate; its forks and wheel are fixed in a single direction. The functional purpose is to provide straight-line stability and support. These are typically used on the trailing end of equipment (paired with swivel casters at the front) to allow the equipment to track straight and maintain a consistent path.

• Blue-white Zinc Resistant Coating: This is a protective electroplated finish applied to the metal frame (yoke and top plate). The functional purpose is to provide superior corrosion and rust resistance. The "blue-white" bright finish protects the metal from moisture, chemicals, and general wear, extending the caster's lifespan.

Summary of Functional Benefits

1. Directional Stability and Control: The rigid design ensures that the equipment travels in a perfectly straight line. This is crucial for applications where precision movement is required, such as on tracks or in assembly lines, preventing the equipment from wandering or veering off course.

2. Superior Cleanliness and Floor Protection: The white, non-marking wheel ensures that expensive floors (like epoxy, tile, or sealed concrete) remain free from scuffs and black marks, which is essential for maintaining a professional and hygienic environment.

3. Exceptional Rust Resistance: The blue-white zinc coating provides a robust barrier against corrosion. This ensures the caster frame remains durable and visually appealing even in humid conditions, preventing unsightly rust stains on floors.

4. Effortless Rolling: The double ball bearings inside the wheel allow for heavy machines to be moved forward with minimal physical effort, improving workflow efficiency.

5. High Load Capacity: The hard white nylon material combined with the robust rigid frame provides excellent strength and resistance to impact and abrasion, ensuring long-term durability.

Ideal Applications

Given its combination of directional stability, floor protection, and corrosion resistance, this caster is ideally suited for:

1. Industrial Carts and Racks: Used as the stationary (fixed) wheels on the back of heavy-duty carts, tool stands, and storage racks to ensure they track straight when pushed.

2. Assembly Line Equipment: Perfect for guided carts or trolleys that must move in a fixed path along a production line without swerving.

3. Medical and Healthcare Environments: Suitable for heavy medical equipment carts or beds where straight-line movement is required, paired with swivel casters at the front for steering.

4. Food Processing and Commercial Kitchens: The non-marking wheel and corrosion-resistant coating make it suitable for equipment that requires frequent cleaning and exposure to moisture.

5. Retail and Display Fixtures: Ideal for the rigid wheels on the rear of heavy display racks or shelving units to provide stability during movement and protect the retail floor surface.