4 Inch Black PU M12*30 Double Brake Caster With Anti-dust Ring For Equipment

Key Features and Functional Benefits

A. 4 Inch Wheel Diameter & Black Polyurethane (PU) Tread

• Feature: The wheel has a 4-inch diameter and a tread made of black polyurethane.

• Functional Benefits:

  • Floor Protection: PU is non-marking and won't stain or mark hard floors (tile, wood, epoxy). It is much gentler than hard plastic or steel.

  • Shock Absorption: It absorbs vibrations and shock loads, providing a smoother roll over uneven surfaces and protecting sensitive equipment mounted on the cart.

  • Quiet Operation: PU rolls much more quietly than hard rubber or polypropylene wheels.

  • Resistance: It is resistant to many oils, chemicals, and water, preventing swelling or cracking.

  • High Load Capacity: PU typically offers higher load-bearing capacity compared to soft rubber.

B. M12x30 Stem Mount

• Feature: The caster attaches to the equipment via a threaded stem measuring M12 (12mm diameter) and 30mm in length.

• Functional Benefits:

  • Secure Fit: Provides a very secure, bolt-like attachment that prevents the caster from wobbling or pulling out of the socket, unlike friction-ring stems.

  • Easy Installation: Allows for quick installation into a pre-threaded hole or with a matching nut plate on the equipment leg.

C. Double Brake (Total Lock)

• Feature: The "double brake" function (often called "total lock") means one lever activates two braking mechanisms simultaneously.

• Functional Benefits:

  • Simultaneous Locking: It locks both the swivel head (preventing the caster from turning/rotating) and the wheel (preventing it from rolling).

  • Absolute Stationarity: This ensures the equipment stays perfectly still. It won't drift on an incline, and it won't swivel out of alignment. This is critical for safety when loading/unloading equipment or during precise medical procedures.

D. Anti-dust Ring

• Feature: A protective ring or shield located in the swivel raceway (the bearing area where the caster turns).

• Functional Benefits:

  • Contamination Prevention: Prevents dust, lint, fibers, and debris from entering the swivel bearing mechanism.

  • Longevity: Reduces wear and tear on the ball bearings by keeping them clean and lubricated.

  • Maintenance Reduction: Ideal for environments that are vacuumed or hosed down, as it prevents grit from grinding down the moving parts.

Ideal Applications

Medical & Healthcare:

• Hospital Beds: The double brake is essential to keep the bed stationary while a patient gets in or out. The anti-dust ring prevents lint and dust from hallways from clogging the swivel.

• Surgical Tables/Equipment: Requires absolute stability during procedures. The PU protects sterile facility floors.

• Medical Carts (Code Carts, Anesthesia Carts): Needs to roll quietly and lock firmly in place at the patient's bedside.

Industrial & Manufacturing:

• Assembly Line Fixtures: For workstations that must remain rigid and not roll away during torqueing or assembly processes.

• Maintenance Trolleys: Carrying heavy toolkits, requiring stability when parked on slightly uneven factory floors.

Food Service & Institutional:

• Food Prep Tables: The double brake ensures the table doesn't roll away when leaning on it. The PU is waterproof and resistant to cleaning agents.

• Janitorial Carts: The anti-dust ring is highly beneficial here, as these carts operate in dusty environments and push debris, protecting the swivels from clogging.

Aerospace & Electronics:

• Equipment Racks (Server Racks): Heavy server cabinets require the "total lock" feature to prevent movement during cable installation, and the PU protects expensive raised floors.