FAGI 6304 2RS C3 P6 Deep Groove Ball Bearing
The FAGI 6304 2RS C3 P6 deep groove ball bearing is a critical engineering component designed for 20mm shafts. With an outside diameter of 52mm and a width of 15mm, it combines high load-bearing capacity with structural rigidity and dynamic stability at high rotational speeds.
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Product Detail
FAGI 6304 2RS C3 P6 Heavy-Duty Deep Groove Ball Bearing High Precision (P6/ABEC-3) | C3 Thermal Clearance | 2RS Contact Seals | 20mm Bore
Engineered for high-speed industrial electric motors, high-pressure pumps, industrial gearboxes, and critical rotating equipment requiring thermal stability and complete environmental protection.
Technical Overview: FAGI 6304 2RS C3 P6
The FAGI 6304 2RS C3 P6 deep groove ball bearing is a critical engineering component designed for 20mm shafts. With an outside diameter of 52mm and a width of 15mm, it combines high load-bearing capacity with structural rigidity and dynamic stability at high rotational speeds.
This FAGI bearing distinguishes itself in high-performance applications through two key specifications: P6 precision class (equivalent to ISO Class 6/ABEC-3) and C3 radial clearance. The P6 tolerance ensures dimensional accuracy and reduced vibration, while the C3 clearance accommodates thermal expansion, preventing mechanical seizure in high-temperature environments. The double-sided 2RS nitrile rubber (NBR) contact seals provide total isolation against dust, moisture, and debris.
Technical Breakdown (6304 2RS C3 P6)
6: Family identifier for standard single-row deep groove ball bearings.
3: Dimension Series 3 (Heavy Duty); features thicker rings and larger balls than Series 60 or 62, enabling higher radial load capacity.
04: Bore code; 04 × 5 = 20mm shaft diameter.
2RS: Equipped with two reinforced NBR contact seals, ensuring full protection against environmental contaminants.
C3: Greater than normal radial internal clearance; compensates for heat-induced expansion to ensure smooth operation under load.
P6: High precision tolerance class per ISO 492; offers superior raceway finish and minimal radial runout, critical for reducing operational vibration.
Engineering Specifications Table
| Bore (d) | OD (D) | Width (B) | Tolerance Class | Clearance | Seal Type | Brand |
|---|---|---|---|---|---|---|
| 20 mm | 52 mm | 15 mm | P6 | C3 | 2RS | FAGI |
Key Advantages
P6 Precision Tolerance
Precision-ground raceways minimize radial runout, eliminating harmonic vibration in high-speed machinery.
C3 Thermal Stability
Optimizes internal space to prevent binding and seizure caused by shaft expansion during high-heat operation.
Superior 2RS Sealing
Contact seals offer robust isolation against moisture, coolants, and fine particulate matter common in industrial environments.
100Cr6 Bearing Steel
High-purity steel heat-treated to 60-62 HRC for exceptional fatigue resistance and surface wear performance.
Factory-Lubricated
Maintenance-free operation with high-shear-stability premium industrial grease sealed for life.
Heavy Series Capacity
The Series 63 configuration provides larger rolling elements for higher load and impact resistance.
Primary Applications
- Industrial Electric Motors: Essential for drive-end and non-drive-end shafts where thermal expansion requires C3 clearance.
- Centrifugal Pumps: Reliant on P6 precision for smooth rotation in demanding fluid-handling environments.
- Industrial Gearboxes: Intermediate and output shafts handling high torque and shock loads.
- Compressors & Industrial Blowers: High-speed, high-vibration equipment benefiting from P6 runout standards.
- Agricultural Machinery: Tillage equipment and harvesters where 2RS seals guard against harsh, dusty conditions.
Installation Protocols & Warnings
When pressing the bearing onto the shaft, force must only be applied to the inner ring. Never apply installation force through the outer ring or the seals; doing so transfers damaging stress directly to the rolling elements, leading to immediate raceway failure.
Avoid striking the bearing with steel hammers. Never soak 2RS-sealed bearings in solvents; solvents degrade factory grease and destroy the NBR seal material.
Installation Best Practice
Use an induction heater (max 110°C) or a mechanical sleeve press to apply force evenly to the inner ring. This ensures a stress-free fit.
Frequently Asked Questions (FAQ)
1. What are the exact dimensions of the 6304?
The bore is 20mm, outer diameter is 52mm, and width is 15mm.
2. Why choose 6304 over 6204?
While both have a 20mm bore, the 6304 has a larger OD (52mm vs 47mm) and width, offering significantly higher radial and shock-load capacity.
3. Is P6 precision necessary?
Yes, for high-speed electric motors. It reduces radial runout, which lowers operating noise and prevents premature wear.
Order FAGI 6304 2RS C3 P6
For stock availability, bulk pricing, or technical support, contact the Kamyar Gostar Iranian sales engineering team.
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