FAGI 6306 2RS C3 P6 Deep Groove Ball Bearing
The FAGI 6306 2RS C3 P6 deep groove ball bearing is a premium, high-performance radial bearing from the Heavy-Duty Series (Series 63), specifically designed for 30mm bore shaft applications. With an outside diameter of 72mm and a width of 19mm, the 6306 utilizes larger rolling elements and thicker raceways compared to the 6006 or 6206 series, offering superior load-carrying capacity and fatigue resistance.
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Product Detail
FAGI 6306 2RS C3 P6 Heavy-Duty Deep Groove Ball Bearing High Precision (P6/ABEC-3) | C3 Thermal Clearance | 2RS Contact Seals | 30mm Bore
Engineered for high-power electric motors, industrial pumps, gearboxes, and compressors requiring robust load capacity and long-term reliability.
Technical Overview: FAGI 6306 2RS C3 P6
The FAGI 6306 2RS C3 P6 deep groove ball bearing is a premium, high-performance radial bearing from the Heavy-Duty Series (Series 63), specifically designed for 30mm bore shaft applications. With an outside diameter of 72mm and a width of 19mm, the 6306 utilizes larger rolling elements and thicker raceways compared to the 6006 or 6206 series, offering superior load-carrying capacity and fatigue resistance.
This bearing integrates P6 precision class (reducing operational noise and vibration) with C3 radial clearance, making it the ideal choice for high-speed industrial electric motors where thermal expansion is a factor. The dual-sided 2RS nitrile rubber contact seals ensure the factory-filled lubricant is retained for life while providing maximum protection against ingress of dust, moisture, and industrial particulates.
Technical Breakdown (6306 2RS C3 P6)
6: International standard identifier for single-row deep groove ball bearings.
3: Series 3 (Heavy Duty); robust construction for demanding environments and higher dynamic load handling.
06: Bore identifier; corresponds to a 30mm shaft diameter.
2RS: Equipped with two reinforced NBR contact seals for reliable protection against contaminants.
C3: Greater than normal internal radial clearance; critical for managing thermal expansion in continuous-duty industrial applications.
P6: High precision tolerance (ISO 492 / ABEC-3); delivers minimal radial runout and superior surface finish, essential for reducing harmonic vibration in high-speed machinery.
Engineering Specifications
| Bore (d) | OD (D) | Width (B) | Precision | Clearance | Seal Type | Brand |
|---|---|---|---|---|---|---|
| 30 mm | 72 mm | 19 mm | P6 | C3 | 2RS | FAGI |
Key Advantages
High Load Capacity
Heavy-duty Series 63 construction provides robust support for demanding radial and dynamic loads.
P6 Precision Class
Superior manufacturing tolerances reduce radial runout, ensuring mechanical stability at high operating speeds.
C3 Thermal Management
Increased internal clearance compensates for thermal expansion in electric motor shafts, preventing seizure.
100Cr6 Steel Quality
High-grade alloy steel (60-62 HRC) ensures excellent fatigue resistance and service life under heavy load.
2RS Sealing Integrity
Reliable rubber-to-metal contact seals block dust and moisture from damaging internal components.
Factory Greased
Pre-lubricated with high-stability industrial grease for maintenance-free, long-term operation.
Primary Applications
- Heavy Industrial Electric Motors: The standard choice for support on large-frame, high-torque motor shafts.
- Centrifugal Pumps: Reliable radial support for pump impellers under continuous duty.
- Industrial Gearboxes: Essential for maintaining alignment in reduction gear sets.
- Air Compressors & Blowers: High-speed performance with minimal noise and vibration.
- Production Machinery: Durable, maintenance-free rotation for manufacturing, textile, and packaging lines.
Installation Protocols & Warnings
Installation force must be applied strictly to the inner ring when pressing the bearing onto a shaft. Never press through the outer ring or seals; doing so transfers load to the rolling elements, causing immediate microscopic damage and premature failure.
Avoid using hardened steel hammers directly on the bearing. Never soak 2RS-sealed bearings in solvents (gasoline, kerosene, thinner); solvents wash away factory lubricant and degrade the NBR seal material.
Installation Best Practice
For 30mm shafts, use an induction heater (max 110°C) or a mechanical sleeve press to apply force evenly to the inner ring, ensuring a stress-free fit.
Frequently Asked Questions (FAQ)
1. What are the dimensions of the 6306?
It features a 30mm bore, 72mm outside diameter, and a 19mm width.
2. 6306 vs. 6206: What is the difference?
While both have a 30mm bore, the 6306 has a larger OD (72mm vs 62mm) and greater width (19mm vs 16mm), making it heavier and capable of handling significantly higher loads and impact forces.
3. Why is C3 clearance necessary for this bearing?
The 6306 is often used in high-heat applications. C3 clearance provides the necessary internal space for the bearing components to expand during operation, preventing thermal seizure.
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