2-4 Inch Insert Rod with brake Medical Casters for Equipment/trolley/ Furniture

The Century Langyi Medical Caster is a premium-grade, total-locking swivel caster specifically engineered for the rigorous demands of medical, laboratory, and institutional furniture. Its core purpose is to provide unmatched control and tranquility. The centerpiece is its total-locking mechanism, which simultaneously secures both the wheel rotation and the swivel movement with a single, easy-to-operate pedal. This dual-action lock eliminates any drift or creep, ensuring that medical beds, anesthesia carts, or instrument trolleys remain steadfastly stationary when needed, enhancing patient and staff safety.

Constructed around a high-tensile strength zinc-aluminum alloy (ZA alloy) horn, it offers an exceptional balance of lightweight maneuverability and structural integrity, resisting corrosion from frequent cleaning. The wheel features a gray Polyurethane (PU) tread bonded to a sturdy nylon core. This combination delivers a suite of benefits: the PU surface ensures a remarkably quiet roll, protects floors from scuffs and marks, and provides excellent resistance to oils and chemicals. The insert rod stem (available in standardized diameters) offers a secure and clean installation method for tubular furniture legs, a common feature in medical and office settings. Designed for a maximum load capacity of 90 kgs (≈198 lbs) per caster, it is built to handle substantial weight reliably, day in and day out.

Key Features & Highlights: Engineered for Excellence

Dual-Function Total Lock: A single pedal activates a dual-locking system. The main brake locks the wheel to prevent rolling, while a secondary pin locks the swivel housing, preventing any turning motion. This guarantees absolute stability for procedures or patient transfers.

Guardian of Quiet & Floors: The specially formulated gray PU wheel tread absorbs vibration and rolls in near silence—critical for patient rest areas. Its non-marking, floor-friendly nature preserves the integrity of expensive vinyl, hardwood, or epoxy floors.

Corrosion-Resistant Durability: The ZA alloy construction and high-quality plating on the stem provide superior resistance to rust and degradation from repeated exposure to disinfectants, alcohol wipes, and hospital-grade cleaners.

Plug-and-Play Installation: The insert rod stem is designed for quick, tool-free installation into standard tubular legs. It provides a robust connection that withstands lateral forces without loosening, unlike simpler friction-fit stems.

Versatile Size Range: Offered in 2-inch, 2.5-inch, 3-inch, and 4-inch wheel diameters, it allows for precise customization based on load requirements, desired equipment height, and terrain (e.g., thicker carpets vs. smooth flooring).

Mobility & Maneuverability Performance

Swivel Action: Features a precision double-ball raceway and sealed bearing, ensuring buttery-smooth 360-degree rotation even under near-maximum load, reducing operator effort when navigating tight corners in wards or kitchens.

Rolling Resistance: The combination of the PU tread's compound and the optimal wheel diameter (e.g., 3" or 4" for carpets) minimizes the force required to initiate movement, protecting staff from strain and wear on equipment.

Locking Mechanism & Stability Security

Mechanism Depth: Unlike basic wheel-only brakes, our total lock is engineered with a hardened steel locking pin that engages a serrated ring in the swivel base. This positive mechanical engagement is more reliable than friction-based swivel locks.

Actuation & Feedback: The brake pedal offers clear tactile and audible "click" feedback upon engagement and disengagement, allowing staff to confirm the lock status by feel and sound without looking down.

Durability & Structural Integrity

Material Science: ZA alloy provides a superior strength-to-weight ratio and better bearing surface properties than standard gray iron or low-grade aluminum, leading to longer service life for the swivel mechanism.

Load Rating Validation: The stated 90kg dynamic load is derived from rigorous in-house fatigue testing (over 500,000 rolling cycles) and shock load testing, exceeding typical commercial grade requirements.

Installation & Compatibility

Stem Specifications: The insert rod stem complies with common international tube inner diameter standards. Detailed dimension drawings (available upon request) specify thread pitch, rod length, and required insertion depth for engineering compatibility checks.

Alternative Configurations: While this product focuses on the insert rod, our manufacturing line supports various stem types (threaded, plate, expanding rubber) for complete OEM furniture solutions.

Floor & Environmental Protection

Chemical Resistance: The PU tread is tested against isopropyl alcohol, dilute bleach solutions, and common disinfectants to ensure it does not degrade, become sticky, or discolor.

Static Load Dispersion: The wheel's contact area and tread durometer are calculated to exert a floor load pressure (PSI) well below the indentation threshold of resilient flooring like vinyl sheet or LVT.

Application-Specific Design

Medical Compliance: The design facilitates easy cleaning, with no crevices for microbial growth. Materials are non-porous and can withstand high-temperature wash-downs in CSSD (Central Sterile Supply Department) environments.

Noise Abatement: Extensive acoustic testing confirms rolling noise levels below 55 dB at 2 m/s, meeting guidelines for quiet zones in hospitals and libraries.

FAQ

Q1: What is the exact difference between a "total lock" and a "standard side brake"?
A1: A standard side brake typically only locks the wheel from rolling. A total lock (or "dual lock") adds a second mechanism that also locks the swivel bearing, preventing the caster from turning in any direction. This is essential for equipment like surgical light arms or mobile workstations that must remain completely rigid and orientation-stable when positioned. Our system accomplishes this with one unified pedal for intuitive operation.

Q2: How do I select the correct wheel diameter (2", 3", or 4") for my application?
A2: The choice involves a trade-off between mobility and stability. Larger wheels (3", 4") roll more easily over obstacles like cable covers, carpet edges, and minor floor irregularities. They are ideal for heavier equipment or mixed-floor environments. Smaller wheels (2", 2.5") provide a lower profile and a lower center of gravity, excellent for stability on perfectly smooth floors (like labs) or for lighter carts where minimal height is key. Our sales engineers can provide a specific recommendation based on your equipment weight and primary floor type.

Q3: Are these casters suitable for use on tiled floors or in food service areas?
A3: Absolutely. The non-marking gray PU tread is specifically chosen to be gentle on sensitive surfaces like ceramic tile, polished concrete, and epoxy coatings without leaving scuff marks. Furthermore, the materials are resistant to food-grade cleaners and fats. For environments requiring strict hygiene, we can offer variants with a polished stainless-steel horn upon inquiry.

Q4: What is your lead time for sample orders and bulk production?
A4: We encourage and support sample evaluations. Standard sample lead time is 5-7 working days after confirmation. For production orders, our standard lead time is 25-30 days for container quantities (FOB/CIF terms available). We maintain strategic raw material inventories, which, combined with our integrated factory, allows us to offer more reliable and often faster turnaround times than assemblers.

Q5: Do you provide certifications or test reports for your products?
A5: Yes, we can provide a range of documentation to support your procurement and compliance needs. This includes in-house material certification, load test reports (simulating dynamic rolling and static load tests), and general product specifications. While this specific model is not UL or ISO certified by default, we have the capability to conduct and support third-party testing for projects with specific certification requirements.