Gray 4in U Bracket Casters PP 4 Inch Caster Wheels Single Ball Bearing

Features

• Wheel Diameter: 4 inches (100mm) – A versatile medium size suitable for a wide range of equipment and floor surfaces.

• Wheel Material: Polypropylene (PP) – A rigid, lightweight, non-porous thermoplastic .

• Color: Gray (a uniform color throughout the material, preferred in environments where black marks or bright colors are undesirable).

• Bearing Type: Single Precision Ball Bearing – A single race of ball bearings within the wheel hub designed to reduce rolling resistance .

• Brake Type: Double Brake (Total Lock) – A foot-operated mechanism that simultaneously locks both the wheel's rotation AND the swivel action, often referred to as a "total lock" brake .

• Mounting Type: U-Plate – A U-shaped bracket (also known as a top plate) with pre-drilled holes for bolting the caster securely onto equipment.

• Construction: Typically features a galvanized or zinc-plated steel frame for durability and corrosion resistance.

Functional Benefits

• Controlled Mobility with Enhanced Safety (Double Brake): The double brake mechanism provides maximum safety by completely immobilizing the caster . It prevents the equipment from rolling away and stops the wheel from swiveling, ensuring absolute stability during loading, unloading, or when parked on an incline.

• Smooth Rolling with Moderate Effort (Single Ball Bearing): The single precision ball bearing significantly reduces friction compared to basic plain bearings . This allows the equipment to roll smoothly and easily during frequent movement, reducing operator fatigue in medium-duty applications.

• Versatile & Secure Mounting (U-Plate): The U-plate provides a stable and secure platform for attaching the caster to the equipment, ensuring the connection remains rigid and reliable under load.

• Floor Protection & Clean Operation (PP Material): The hard, smooth surface of the gray PP wheel is non-marking and will not leave scuff marks on floors . PP is also resistant to water, oils, and many chemicals, making it easy to clean and maintain .

• Good Chemical & Moisture Resistance: PP wheels are impervious to moisture and resist a wide range of acids, alkalis, and solvents, ensuring longevity in spill-prone environments .

Ideal Applications

This caster combines the floor-friendly properties of PP with the safety of a total-lock brake, making it ideal for environments where cleanliness and secure parking are essential.

• Medical & Healthcare: Ideal for medical carts, hospital beds, equipment stands, and service trolleys that must be positioned precisely and locked in place for patient safety and stability during procedures .

• Institutional (Schools/Hotels): Perfect for housekeeping carts, laundry carts, and food service trolleys that require secure parking when not in motion and must withstand frequent cleaning.

• Food Service: Suitable for kitchen equipment, preparation tables, and serving carts where equipment must be moved for cleaning but locked in place during service, and where resistance to cleaning chemicals is required.

• Light Industrial & Workshop: Excellent for tool stands, small parts bins, and workbenches that need to be moved occasionally but remain stable during use.

• Retail & Display: Ideal for heavy display fixtures, movable shelving units, and vending machines that require secure placement to prevent customer accidents while allowing for store reconfigurations.