KAWASAKI 92045-1254 Ball Bearing Nos 6305RHR4

( Manufacturer Part Number: 92045-1254 ), ( Part Type: Bearing )

Review KAWASAKI Oem Ball Bearing Nos

The **Kawasaki 92045-1254 Ball Bearing (6305RRH4 NOS)** is a high-performance, precision-engineered open bearing designed for demanding industrial and automotive applications, particularly where reliability, durability, and consistent performance are critical. This **new old stock (NOS)** bearing falls under the **6305 series**, a widely recognized standard in the bearing industry, offering a robust internal design optimized for radial loads while maintaining smooth operation under heavy-duty conditions. Manufactured by Kawasaki, a trusted name in bearing technology, this unit features a **6305 bore size (25mm)** paired with a **52mm outer diameter**, making it ideal for applications requiring a balance of compact form and substantial load-bearing capacity. The **RRH4 designation** indicates a specific cage design likely a brass or steel cage with rubber seals enhancing lubrication retention and reducing friction, which is essential for extending the bearing s operational lifespan in environments where contamination or moisture is a concern. Constructed from high-grade **chromium steel**, this bearing undergoes rigorous heat treatment and precision grinding to achieve an exceptionally smooth surface finish, minimizing wear and maximizing efficiency. The **open design** allows for direct lubrication access, making it suitable for applications where grease or oil can be applied regularly, though it may require additional sealing in environments prone to dust or debris. Whether used in automotive transmissions, industrial machinery, or heavy-duty equipment, this bearing delivers **superior radial load capacity** while maintaining low noise and vibration levels, ensuring optimal performance in both steady-state and fluctuating load scenarios. Its **NOS status** guarantees that it has been stored under controlled conditions, preserving its original factory specifications and ensuring it meets or exceeds OEM standards for quality and reliability.

The **Kawasaki 92045-1254** is a **6305RRH4** deep groove ball bearing, commonly used in automotive applications, particularly in wheel hubs, transmissions, and other high-load rotating components. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Kawasaki 92045-1254 (6305RRH4 Bearing)**

1. **High Quality and Durability**

The Kawasaki brand is known for manufacturing precision-engineered bearings designed to withstand heavy loads, high speeds, and harsh operating conditions. These bearings are often used in performance and commercial vehicles where reliability is critical.

2. **Sealed Construction**

The **RRH4** designation indicates a sealed bearing with a **rubber shield** on one side and a **metal shield** on the other. This design helps protect against contamination from dust, moisture, and debris, extending the bearing s lifespan in dirty or outdoor environments.

3. **Compatibility with Kawasaki and Other Brands**

Kawasaki bearings are often interchangeable with other reputable brands (e.g., NTN, NSK, SKF) in the same size and series. The **6305** size is a standard bearing, making it easy to find replacements if needed.

4. **Widely Available**

As a common bearing size, the **92045-1254** is stocked by many automotive parts suppliers, both online (e.g., RockAuto, Amazon, eBay) and in physical stores. This ensures easy replacement without long wait times.

5. **Cost-Effective for Performance Applications**

While not the cheapest bearing on the market, it offers a good balance between price and performance. It is often more affordable than premium brands like **SKF or NTN** but still reliable for most applications.

6. **Good for High-Speed and Heavy-Load Use**

The **6305** bearing is designed to handle radial loads and some axial loads, making it suitable for wheel hubs, differentials, and transmission applications where smooth operation is required.

7. **Backed by Kawasaki s Reputation**

Kawasaki is a trusted name in industrial and automotive bearings, with a history of producing components that meet strict quality standards. This can provide peace of mind when purchasing.

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### **Cons of buying a Kawasaki 92045-1254 (6305RRH4 Bearing)**

1. **Potential for Counterfeit or Low-Quality Replicas**

Due to its popularity, the **6305RRH4** bearing is often counterfeited. Some sellers may offer "OEM" or "Kawasaki" bearings that are actually knockoffs with inferior materials or poor machining. This can lead to premature failure, increased noise, or even catastrophic seizure.

2. **Higher Price Than Generic Bearings**

While not excessively expensive, Kawasaki bearings are generally more costly than generic or no-name brands. If budget is a concern, cheaper alternatives (e.g., **NSK, NTN, or even some Chinese brands**) may offer similar performance at a lower cost.

3. **Limited Customization**

Unlike some high-end bearings, Kawasaki s standard offerings do not include specialized coatings (e.g., ceramic or diamond-like carbon) or extreme-temperature modifications. If your application requires these features, you may need to look elsewhere.

4. **Potential for Overkill in Light-Duty Applications**

If you are replacing a bearing in a **light-duty vehicle (e.g., a daily driver with minimal off-roading)**, a slightly cheaper but still high-quality bearing (e.g., **NSK 6305RRH4**) may suffice without the need for Kawasaki s premium pricing.

5. **Installation Challenges**

Some deep groove ball bearings, including the **6305RRH4**, can be sensitive to improper installation. If not seated correctly (e.g., with the right clearance, lubrication, and torque), they may fail prematurely. This requires careful handling.

6. **Limited Longevity in Harsh Environments**

While sealed, the **rubber shield** on one side can degrade over time if exposed to extreme heat, chemicals, or prolonged moisture. In very harsh conditions, a **double-shielded (RRH4) bearing** may not last as long as a **full-sealed (RS) or shielded (RSH) alternative**.

7. **Potential for Misalignment Issues**

If the bearing is used in an application where misalignment is possible (e.g., a poorly aligned wheel hub), the **6305RRH4 s** radial clearance may not be sufficient, leading to increased wear and noise.

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### **Conclusion**

The **Kawasaki 92045-1254 (6305RRH4)** is a **reliable, high-quality bearing** that excels in **heavy-duty, high-load, and performance applications**. Its sealed design, durability, and compatibility with Kawasaki and other brands make it a strong choice for **automotive wheel hubs, transmissions, and industrial machinery**. However, **counterfeit risks, higher cost, and potential overkill for light-duty use** are drawbacks to consider.

If you are replacing a bearing in a **performance vehicle, commercial truck, or off-road application**, the Kawasaki bearing is a **solid investment**. For **budget-conscious buyers or light-duty applications**, a **reputable generic brand (e.g., NSK, NTN, or Timken)** may offer comparable performance at a lower price.

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### **Recommendation**

1. **Verify Authenticity Before Purchase**

- Buy from **authorized Kawasaki distributors, RockAuto, or trusted online retailers** (e.g., Amazon, eBay with high seller ratings).

- Check for **serial numbers, packaging, and brand markings** to avoid counterfeits.

- If possible, **compare with a known genuine bearing** before installation.

2. **Consider Alternatives if Budget is a Concern**

- **NSK 6305RRH4** or **NTN 6305RRH4** offer similar performance at a lower cost.

- If the application is **high-speed or extreme-duty**, look for **SKF or FAG** bearings, which may have better long-term reliability.

3. **Ensure Proper Installation**

- Clean the bearing and housing thoroughly before installation.

- Use the **correct lubrication** (e.g., lithium-based grease for automotive use).

- Avoid **over-torquing** the bearing or forcing it into place.

4. **Monitor Performance After Installation**

- Listen for **unusual noises (grinding, humming)** that could indicate misalignment or failure.

- Check for **excessive heat or vibration**, which may require re-lubrication or replacement.

The **Kawasaki 92045-1254 (6305RRH4)** is a **good choice for demanding applications** where reliability is critical. However, **always prioritize authenticity and proper installation** to maximize its lifespan. For most **daily drivers or budget replacements**, a **high-quality generic bearing** may be sufficient.

Details:

Item Overview. Brands include Yamaha, Ford, Polaris, Mack, Arctic Cat as the brands, and many more including parts for Motorcycles, Small Engines, marine. All parts are unused, dealer-sourced, and classified as New Old Stock NOS. Included: Ball Bearing 6305RHR4.

part #: 920451254 prices

• $29.99-$37.59

specifications bearingmotorcycleiz:

• for makes: Kawasaki
• mpn: 92045-1254
• part type: Bearing

shipping bearingmotorcycleiz:

• class: Standard, Expedited, One-day
• transit: 4-10 Days
• carrier: USPS, UPS
• 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:

• wallet: Google-pay
• other
• credit card: Diners-club

returns bearingmotorcycleiz:

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

offer bearingmotorcycleiz:

• best offers: True
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: May 16, 2026
• sold: 0

general bearingmotorcycleiz:

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

seller bearingmotorcycleiz:

• city: Ashaway, Rhode Island
• # reviews: 137391
• rating: 99.9%

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