6321-2RS1
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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6321-2RS1 Bearing Product Overview & Core Advantages
The 6321-2RS1 is a double-row deep groove ball bearing engineered for exceptional performance in demanding applications. This sealed bearing is designed to accommodate significant radial loads and moderate axial loads in both directions, offering a robust and reliable solution. Its compact design, featuring two rows of balls, provides high rigidity and operational stability. Manufactured to P6 tolerance class, it ensures high running accuracy, making it suitable for applications requiring precision and long service life.
Model Code Breakdown
| Prefix/Base Number | 63 | Series designation for a medium-duty, double-row deep groove ball bearing. |
| Bore Diameter Code | 21 | Indicates a bore diameter of 105 mm (calculated as 21 x 5 = 105 mm). |
| Seal Suffix | -2RS1 | Signifies that the bearing is equipped with two rubber contact seals (RS), one on each side. The "1" denotes a specific seal design, offering effective protection against contaminants and retention of lubricant. |
6321-2RS1 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row ball construction provides superior radial stiffness and enables the bearing to support high radial dynamic load ratings of 41,365 lbf and radial static load ratings of 34,396 lbf, making it ideal for applications with heavy and combination loads.
- Effective Sealing & Longevity: The integrated 2RS1 rubber contact seals effectively shield the internal components from dust, moisture, and other contaminants while retaining the factory-applied lubricant. This design significantly extends the bearing's service life and promotes maintenance-free operation in many environments.
- Precision & Reliability: Manufactured to a P6 tolerance class with a standard CN radial internal clearance, this bearing ensures high running accuracy, reduced vibration, and consistent performance. The use of a stainless steel cage enhances durability and corrosion resistance.
- Robust Material Construction: Rings and balls made from high-grade chrome steel provide excellent wear resistance and fatigue life, suitable for a wide operating temperature range from -30°C to 120°C.
6321-2RS1 Bearing Typical Application Areas
The 6321-2RS1 is versatile and finds use in numerous industrial sectors requiring robust and sealed bearing solutions. Key applications include:
- Electric Motors and Generators
- Industrial Gearboxes and Transmissions
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- Construction Equipment
- Ventilation and Fan Systems
