6304RS Bearing Nos

( Brand: Aftermarket ), ( Manufacturer Part Number: 6304RS ), ( Part Type: Bearing )

Review AFTERMARKET Bearing Nos

The **6304RS bearing** is a precision-engineered deep groove ball bearing designed for high-performance applications where reliability, durability, and low friction are paramount. Part of the **6300 series**, this bearing features an **inner diameter of 20mm (0.787 inches)**, an **outer diameter of 47mm (1.85 inches)**, and a **width of 15mm (0.59 inches)**, making it a compact yet robust solution for a wide range of mechanical systems. The **"RS" designation** indicates that this bearing is **shielded on both sides**, providing enhanced protection against contamination from dust, dirt, and moisture while maintaining a sealed environment that minimizes lubricant loss. Unlike open bearings, the RS variant offers superior resistance to environmental debris, extending the bearing s operational lifespan without requiring frequent relubrication.

Constructed from **high-quality chrome steel (typically AISI 52100 or equivalent)**, the 6304RS bearing delivers exceptional hardness and wear resistance, ensuring smooth operation even under moderate to heavy loads. The **deep groove design** allows for axial displacement in both directions, accommodating slight shaft misalignments and reducing stress on adjacent components. The **ball bearings** within the raceway distribute loads evenly, minimizing point contact and preventing premature fatigue, while the **cage (retainer)** often made from pressed steel or synthetic materials maintains optimal ball spacing to prevent skidding and overheating. This bearing is particularly well-suited for applications where **low noise, minimal vibration, and consistent performance** are critical, such as in automotive components (e.g., wheel hubs, alternators, or water pump assemblies), industrial machinery (e.g., conveyors, pumps, or compressors), and precision instruments (e.g., robotics, medical devices, or CNC machinery).

The **sealed construction** of the 6304RS bearing simplifies maintenance, as it retains factory-applied grease or oil within the housing, reducing the need for external lubrication in many cases. However, in high-speed or high-temperature environments, periodic checks may still be necessary to ensure optimal performance. This bearing s **versatility** makes it a popular choice for both original equipment manufacturers (OEMs) and aftermarket replacements, where its compact size and robust design bridge the gap between general-purpose and specialized applications. Whether used in automotive transmissions, agricultural equipment, or high-precision machinery, the 6304RS bearing exemplifies a balance of **durability, efficiency, and ease of integration**, making it a dependable component in countless mechanical systems.

### **Pros and Cons of Buying 6304 Bearing (RS Series) Bearings**

1. **High Load Capacity** The 6304 bearing is a deep groove ball bearing designed for radial and axial loads, making it suitable for applications requiring durability under moderate to heavy loads.

2. **Low Friction & Smooth Operation** The ball bearings minimize friction, reducing energy consumption and wear, which is beneficial for machinery requiring precise and efficient movement.

3. **Versatile Applications** These bearings are commonly used in electric motors, pumps, conveyors, and automotive components, making them a reliable choice for various industries.

4. **Standardized Design** Being a widely available bearing, it is easy to source from multiple suppliers, ensuring availability and compatibility with existing machinery.

5. **Long Service Life** With proper lubrication and maintenance, 6304 bearings can last for extended periods, reducing downtime and replacement costs.

6. **Cost-Effective** Compared to specialized bearings, the 6304 is relatively affordable, offering a balance between performance and price.

7. **Easy Installation & Replacement** Due to their standard dimensions (inner diameter 20mm, outer diameter 47mm, width 15mm), they can be easily fitted into existing housings or mounts.

8. **Resistance to Shock Loads** The deep groove design helps absorb minor shock loads, making them suitable for applications with occasional impact.

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1. **Limited Axial Load Capacity** While they handle radial loads well, they are not ideal for high axial (thrust) loads without additional support (e.g., thrust washers or paired bearings).

2. **Sensitivity to Misalignment** If installed improperly or subjected to misalignment, the bearing may experience increased wear or premature failure.

3. **Requires Proper Lubrication** Neglecting lubrication can lead to overheating, increased friction, and reduced lifespan. Over-lubrication can also cause contamination or excessive heat.

4. **Not for High-Speed Applications** While they perform well in moderate speeds, extremely high-speed applications may require specialized bearings (e.g., ceramic or angular contact bearings).

5. **Environmental Limitations** Exposure to moisture, dust, or corrosive substances without proper sealing can accelerate wear and corrosion.

6. **Potential for Noise & Vibration** Poor-quality bearings or improper installation may generate noise and vibration, affecting machinery performance.

7. **Limited Temperature Range** Most standard 6304 bearings have operating temperature limits (typically -30 C to 120 C). Extreme temperatures may require special materials (e.g., stainless steel or high-temperature grease).

8. **Dependence on Mounting Precision** The bearing s performance hinges on accurate shaft and housing fits. Poor mounting can lead to premature failure.

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### **Conclusion**

The **6304 bearing (RS series)** is a reliable, cost-effective choice for applications requiring moderate radial loads, smooth operation, and general-purpose performance. Its widespread availability and ease of installation make it a practical option for many mechanical systems. However, its limitations in handling high axial loads, misalignment sensitivity, and environmental exposure necessitate careful selection and maintenance.

- Proper lubrication (grease or oil, depending on the application).

- Correct installation with aligned shafts and housings.

- Compatibility with operating conditions (speed, temperature, load).

- Use of high-quality bearings from reputable manufacturers to avoid premature failure.

If the application involves **high axial loads, extreme speeds, or harsh environments**, consider alternative bearing types (e.g., angular contact, cylindrical roller, or sealed bearings) for improved performance and longevity.

### **Recommendation**

- Your application involves **moderate radial loads** (e.g., small motors, pumps, conveyors).

- You require a **standardized, cost-effective solution** with easy availability.

- The environment is **controlled** (protected from excessive dust, moisture, or temperature extremes).

- **High axial loads** are present (use thrust bearings or paired deep groove bearings).

- **High-speed operation** is required (consider ceramic or angular contact bearings).

- **Harsh conditions** (corrosion, extreme temperatures) are expected (opt for stainless steel or sealed bearings).

For critical applications, consult a bearing specialist to ensure the right choice for your specific needs.

Details:

Bearing is new and in good condition, not original packaging. Aftermarket 6304RS Bearing NOS. Pictures: Thumbnails. All parts are in stock and ready to ship.

Shows signs of shelf wear. Items are shipped using USPS, UPS, and FedEx. If the original package is included it may show signs of wear.

part #: 6304rs prices

• $10.52-$27.45

specifications bearingmotorcycleiz:

• brand: Aftermarket
• mpn: 6304rs
• part type: Bearing

shipping bearingmotorcycleiz:

• transit: 3-8 Days
• carrier: USPS, UPS
• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• type: Calculated
• cost: $0.00

payments bearingmotorcycleiz:

• other
• wallet: Paypal
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returns bearingmotorcycleiz:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

seller bearingmotorcycleiz:

• # reviews: 131885
• city: Ashaway, Rhode Island
• rating: 99.9%

general bearingmotorcycleiz:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Engine Bearings
• condition: New other see details

offer bearingmotorcycleiz:

• started: March 31, 2026
• quantity: 1
• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home

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