6303-2RS/C3 SING ISB deep groove ball bearing

ISB 6303 2RS C3 Deep Groove Ball Bearing (SING)

The ISB 6303 2RS C3 is a high-performance single-row deep groove ball bearing with a reinforced design, engineered for maximum reliability. As part of the 6300 series, it provides significantly higher dynamic and static load ratings than light-series bearings with the same bore diameter. Equipped with contact rubber seals (2RS) and increased C3 internal clearance, it is optimized for high-speed operation and environments subject to thermal stress and contamination. The SING designation ensures delivery in original single-unit ISB packaging.

Application

• Electric Motors: C3 clearance prevents ball seizing during rotor thermal expansion.
• Pumps and Fans: NBR seals provide an effective barrier against moisture and vapor.
• Power Tools: High overload resistance in compact drive mechanisms.
• Agricultural Equipment: Durability in mechanisms exposed to dust, dirt, and debris.
• Industrial Gearboxes: Stable radial load handling in continuous-duty cycles.

Technical Specification

• Manufacturer: ISB (Italy)
• Designation: 6303 2RS C3
• Type: Single-row deep groove ball bearing
• Sealing: 2RS – dual contact rubber seals (NBR).
• Internal Clearance: C3 – radial clearance greater than normal.
• Maintenance: Pre-lubricated for life (maintenance-free).

Note: Standard dimensions for the 6303 are 17 mm (Bore) × 47 mm (OD) × 14 mm (Width).

Features and Benefits

• Reinforced Load Capacity: The robust 6300 architecture supports forces that lighter series equivalents cannot.
• Total Protection: 2RS seals prevent grease leakage and protect the raceways from grit.
• Thermal Stability: C3 clearance ensures reliable performance at elevated operating temperatures.
• Quiet Performance: ISB’s precision-ground raceways ensure minimal vibration and reduced acoustic levels.
• Ready to Install: Factory-filled with high-grade lubricant, requiring no additional maintenance.

Why Choose This Product

The ISB 6303 2RS C3 bearing is the smart choice for critical mechanical systems where durability is paramount. By combining reinforced construction with increased assembly clearance, this product tolerates minor misalignment and excels in harsh operating conditions. Choosing ISB means investing in high-end European engineering that significantly extends the service life of your equipment.