623 Plastic Ball Bearing – Maintenance-free, non-magnetic, corrosion-resistant. Ideal for food machinery, medical devices, electronics, chemical processing, and underwater applications where metal bearings fail. Silent, lightweight, and self-lubricating. Type: Deep groove ball bearing (plastic radial bearing) Inner Diameter (d): 3 mm / 0.1181 in Outer Diameter (D): 10 mm / 0.3937 in Width (B): 4 mm / 0.1575 in Race / Ring Material: POM (Polyoxymethylene / Acetal) or PP (Polypropylene) Ball Material: Glass (non-magnetic) Cage (Retainer) Material: Nylon (Polyamide 66, often glass fiber reinforced) Sealing Type: Open (no seals) – other options available upon request Dynamic Load Rating: Low – suitable for light to medium loads Maximum Speed: Moderate (limited by plastic material properties) Operating Temperature: -20°C to +80°C (typical range) Lubrication: Self-lubricating / Dry operation – no oil or grease required