Deep Groove Ball Bearings: Key Info & Benefits

Suffix Definitions

• RS: Single-side contact rubber seal
• 2RS: Double-side contact rubber seal
• RZ: Single-side non-contact rubber seal
• 2RZ: Double-side non-contact rubber seal
• Z: Single-side dust cover
• ZZ: Double-side dust cover
• N: Outer ring retaining groove

Core Advantages

1. Versatile Loading: Handles radial + bidirectional axial loads; increased clearance enables angular contact bearing substitution. Point-contact design for higher speeds than roller bearings.
2. Cost-Effective & Durable: Mass-produced for low cost; minimal maintenance (lifetime lubrication for open types); 30,000–50,000 hours service life under rated conditions.
3. Flexible Installation: Compensates 2′–10′ shaft deflection; 11 configurations available; sizes from 1mm bore to 440mm+ OD.

Series Overview

• 6000: Compact, balanced performance
• 6200: Light-load, high-speed (precision instruments, small motors)
• 6300: Medium-load, medium-speed (automotive transmissions, industrial pumps)
• 6400: Heavy-duty (construction/heavy equipment)
• 61800/61900: Thin-section (space-constrained applications)

Why Choose Us?

• Premium GCr15 steel (HRC 60–65), ISO 9001 certified
• Full 6000–6400 series in stock, 24-hour delivery
• Customizable sizes, materials, temperature adaptations
• Free selection & failure analysis support
• Factory-direct, competitive pricing

FAQ Highlights

1. vs Angular Contact: 0° contact angle (radial focus) vs 15°/25°/40° (high axial loads); ours are cheaper, faster.
2. Extend Life: Avoid overloading (>30% dynamic load); clean installation; proper lubrication; temperature control; dedicated tools.
3. High-Speed Use: 2RS sealed bearings = 15–20% lower speed limit; choose Z/ZZ shielded or open bearings with oil lubrication for >10,000 RPM.
4. Motor Temp Limit: Max ambient +55°C (95°C total); overheating = check lubrication/alignment/load/clearance.
5. 6205 vs 6305: Same 25mm bore; 6305 = 40% higher load capacity (larger OD/width); choose per space/load needs.

Professional Solutions

We provide optimal recommendations for standard/specialty bearings (e.g., 6203-2RS, VA208).