Feature: Pre-lubricated, smooth and flat bearing surface, compact structure, with strong bearing capacity and dust-proof, long service time. Single-row design, suitable for high-speed, low friction, low-noise and low vibration, improve efficient and steady work. High temperature quenching forging, sturdy and durable in operation, these deep groove ball bearings combine radial and load at high speed. Mainly applicated on wheels for cars, bikes, motorcycles, karts, lawn mowers, skateboards, roller skates, tractors, 3D prints, snow blower etc. Product Dimension: Outer Diameter: 47mm/ 1.85" Inner Diameter: 20mm/ 0.79" Width: 14mm/ 0.55" Color: Silver Tone Type: Deep Groove Ball Bearings Precision Level: P5 Basic Load Ratings(kN): Cr:13.4 C0r:6.6 Limiting Speeds(min-1): 17000 Material: Bearing steel Please Attention: Please confirm the model number and dimension before buying, thanks!Ship Content: 1Pcs - Deep Groove Ball Bearings