6203, 6203Z, 6203ZZ, 6203RS, 6203-2RS Ball Bearings 17x40x12mm – Miniature Deep Groove Bearings for Industrial & Mechanical Equipment

Complete 6203 series deep groove ball bearings in compact size 17mm (ID) × 40mm (OD) × 12mm (W), available in multiple configurations for reliable performance in light to medium-duty industrial, automotive, and mechanical applications:

• 6203: Open type – ideal for applications requiring re-lubrication or custom sealing
• 6203Z / 6203ZZ (6203-2Z): Single or double metal shields – provide effective protection against dust and help retain lubricant
• 6203RS / 6203-2RS: Single or double rubber seals – offer superior resistance to water, moisture, and contaminants

Made from high-quality chrome steel (GCr15), all models feature precision-ground raceways for smooth, low-noise operation and long service life under radial loads and moderate speeds. Widely used in electric motors, power tools, fans, pumps, conveyors, fitness machines, household appliances, and automotive components.

Most sealed versions are pre-lubricated with high-performance grease for maintenance-free operation. The 6203 series supports both radial and limited axial loads, making it a versatile choice for OEMs, replacements, and repair work.

🔧 Key Specifications:

• Models: 6203, 6203Z, 6203ZZ (6203-2Z), 6203RS, 6203-2RS
• Dimensions: 17 × 40 × 12 mm
• Material: Chrome Steel (GCr15)
• Precision Rating: ABEC-1 (ISO P0)
• Temperature Range: -30°C to +110°C (varies by seal type)