The SS-3MD Caster Series from Caster City is engineered for hospitals and laboratories where hygiene and ease of maintenance are paramount. Constructed from stamped S304 stainless steel with an electrolytically polished finish (Ra < 0.4 μm), these casters resist microbial adhesion and simplify sanitization, ensuring compliance with NSF and RoHS standards. Featuring precision-sealed ball bearings in both the swivel and wheel hubs, the SS-3MD eliminates the need for lubrication, preventing lubricant leakage that could contaminate floors and maintaining a pristine environment. This maintenance-free design reduces noise by up to 50% compared to traditional medical casters, delivering whisper-quiet operation ideal for patient areas and sensitive labs. Available in 3”, 4”, 5”, and 6” diameters (all 1.25” wide) with non-marking soft gray rubber or polyurethane on polyolefin wheels, each equipped with thread guards, the SS-3MD ensures smooth mobility and superior floor protection. Offered in Total Locking, Directional Lock, and Plain Swivel variants, the SS-3MD meets diverse institutional needs, from secure positioning in operating rooms to agile navigation in busy labs. Its dual nylon lever brake system engages effortlessly for reliable stability, while the polished surface maintains cleanliness under rigorous cleaning protocols. Equipped with a standard 3/8” axle and a standardized mounting plate (2-3/8” x 3-5/8”, with a bolt hole pattern of 1-3/4” x 2-7/8” slotted to 3”), the SS-3MD integrates seamlessly into medical equipment, providing unmatched hygiene, quietude, and maintenance-free performance for healthcare and research facilities.