61821-2RZ
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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61821-2RZ Bearing Product Overview & Core Advantages
The 61821-2RZ is a single row deep groove ball bearing designed for exceptional performance in compact spaces. Engineered with metric dimensions and manufactured to P6 tolerance class, this bearing delivers high precision and reliability. Its key advantage lies in its ability to handle primarily radial loads efficiently, while its sealed construction ensures long-term performance with minimal maintenance. The combination of chrome steel components and stainless steel cage provides excellent durability, making it ideal for applications demanding high rotational accuracy and operational stability.
61821-2RZ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Advantage |
|---|---|---|
| 61821 | Basic bearing designation with 105mm bore, 130mm OD | Standard metric dimensions for easy integration |
| 2RZ | Non-contact rubber seals on both sides | Effective contamination protection with minimal friction |
61821-2RZ Bearing Structural Features & Performance Benefits
Sealed Construction: The 2RZ non-contact rubber seals provide excellent protection against contaminants while maintaining low operating torque, contributing to the bearing's limiting speed of 5,000 rpm.
High-Quality Materials: Constructed with chrome steel rings and balls combined with a stainless steel cage, this bearing offers superior corrosion resistance and mechanical strength, ensuring reliable performance under radial dynamic loads up to 4,676 lbf.
Precision Engineering: Manufactured to P6 tolerance class with tight dimensional tolerances (bore: -0.015mm to 0, OD: -0.015mm to 0), this bearing provides exceptional running accuracy and minimal vibration.
Pre-lubricated Design: Factory-filled grease lubrication and CN radial internal clearance ensure immediate operation and optimal performance across the temperature range of -30°C to 120°C.
61821-2RZ Bearing Typical Application Areas
- Electric Motors and small power tools requiring compact, sealed bearings
- Industrial Gearboxes where space constraints and radial load capacity are critical
- Material Handling Equipment such as conveyor systems and rollers
- Agricultural Machinery components requiring sealed, maintenance-free operation
- Automotive Auxiliary Systems including pumps and alternators
- Office Automation Equipment and precision instruments demanding quiet operation
