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Item #:
47668543
6203-2NSE9 C3 NACHI Brand Rubber Seal Ball Bearing | 17x40x12 mm | Double Sealed | High Speed | 6203 2RS 6203RS
Item #:
47668543
MMK 62736
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What Stands Out
Double Sealed
The 6203-2NSE9 features a double-sealed design, ensuring maximum protection against dust and moisture, which prolongs its lifespan and maintains optimal performance.
High Precision
Engineered for high-speed applications, this bearing delivers low friction and smooth operation, making it ideal for both industrial and consumer machinery.
NACHI Quality
As a product of the renowned NACHI brand, this bearing guarantees superior quality and reliability, providing excellent value for those seeking durable and efficient solutions.
Product Details
| Brand Name | JSB Great Bearings |
| Bearing Number | 6203 2NSE9 |
| Bearing Type | Ball Bearing |
| Part Number | 6203-2NSE9 / C3 NACHI bearing |
| Manufacturer | JSB Great Bearings |
| Model | 6203-2NSE9 / C3 NACHI bearing |
| Unit Count | 1.0 Count |
| Item Dimensions | 1.57 x 0.47 x 0.67 inches (4 x 1.2 x 1.7 cm) |
| Item Weight | 45 Grams |
| Item Thickness | 12 Millimeters |
| Outside Diameter | 40 Millimeters |
| Material Type | Alloy Steel |
| Compatible Lubricant | Grease |
| Specification Met | ISO 9001 |
| Brand | JSB Great Bearings |
| Material | Alloy Steel |
| Item dimensions L x W x H | 1.57 x 0.47 x 0.67 inches (4 x 1.2 x 1.7 cm) |
Who Should Buy?
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High-Speed Applications
Ideal for machinery and equipment requiring reliable, high-speed performance, thanks to its double sealed design.
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Industrial Users
Perfect for industrial use where durability is essential, especially in harsh environments with dust and debris.
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DIY Enthusiasts
Great choice for hobbyists or DIY projects needing reliable and accessible ball bearings for various applications.
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Low-Speed Uses
Not suitable for applications that operate at low speeds where high durability and speed are unnecessary.
Product Description
6203-2NSE9 C3 NACHI Brand Rubber Seal Ball Bearing | 17x40x12 mm | Double Sealed | High Speed | 6203 2RS 6203RS
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What are the specifications of the 6203-2NSE9 C3 NACHI ball bearing?
Answer: The 6203-2NSE9 C3 NACHI ball bearing features a standard size of 17x40x12 mm. It is double sealed for enhanced protection against dust and moisture, making it ideal for high-speed applications. The C3 clearance designation allows for increased radial internal clearance, accommodating varying thermal expansions while ensuring optimal performance. -
Question:
What applications are suitable for the 6203-2NSE9 C3 NACHI ball bearing?
Answer: This ball bearing is versatile enough to be used in various applications, including electric motors, automotive components, appliance machinery, and industrial equipment. Its high-speed capability and robust sealing make it ideal for environments where reliability and durability are pivotal. -
Question:
How does the double sealing in the 6203-2NSE9 C3 ball bearing enhance its performance?
Answer: The double sealing system in the 6203-2NSE9 C3 ball bearing protects the internal components from contaminants and reduces the risk of lubrication loss. This means it can operate efficiently in harsher conditions, extending the bearing's lifespan. It is particularly beneficial in applications exposed to dust, dirt, and moisture. -
Question:
Is the 6203-2NSE9 C3 NACHI bearing suitable for high-speed applications?
Answer: Yes, the 6203-2NSE9 C3 NACHI bearing is specifically designed for high-speed applications. Its precision and reduced friction characteristics make it suitable for uses such as motors and gear assemblies where fast rotational speeds are common. -
Question:
What materials are used in the construction of the 6203-2NSE9 C3 NACHI ball bearing?
Answer: The 6203-2NSE9 C3 NACHI ball bearing typically features high-quality steel for the races and balls, ensuring strength and durability. The rubber seals are designed to maintain lubrication while keeping contaminants out, enhancing the bearing's overall performance in various environments. -
Question:
What is the load capacity of the 6203-2NSE9 C3 ball bearing?
Answer: The load capacity of the 6203-2NSE9 C3 ball bearing is sufficient for various applications, allowing it to support moderate radial and axial loads. It is ideal for tasks involving moderate to light weight operations, ensuring efficient functioning without failure. -
Question:
How do I install the 6203-2NSE9 C3 NACHI ball bearing?
Answer: To install the 6203-2NSE9 C3 NACHI ball bearing, ensure that the housing and shaft are clean and free from debris. Press the bearing into its housing using a suitable tool to avoid damage. Align it accurately with the shaft for smooth operation. Proper installation ensures longevity and optimal performance. -
Question:
What maintenance does the 6203-2NSE9 C3 NACHI bearing require?
Answer: The 6203-2NSE9 C3 NACHI bearing requires minimal maintenance due to its sealed design. Periodic inspections for wear and tear are advisable. In applications with consistent use, re-greasing may be necessary, especially if the seals show signs of wear or contamination. -
Question:
What should I consider when selecting a substitute for the 6203-2NSE9 C3 NACHI bearing?
Answer: When selecting a substitute for the 6203-2NSE9 C3 NACHI bearing, consider the dimensional specifications, load ratings, sealing type, and material quality. Match these parameters closely to ensure similar performance and longevity in your application. -
Question:
Where can I buy the 6203-2NSE9 C3 NACHI ball bearing?
Answer: You can buy the 6203-2NSE9 C3 NACHI Brand Rubber Seal Ball Bearing from Ubuy in Myanmar. Ubuy offers a reliable platform for purchasing this specific bearing, ensuring you get the original quality you need for your applications.
JSB Great Bearings Deep-Groove Ball Bearings Editorial Review
The NACHI Brand Rubber Seal Ball Bearing has received favorable reviews from customers who have used it. One customer reported using the bearings in a hydro generator under a lot of pressure and changing them yearly with no failures. Another customer stated that they had good luck with this brand after switching from All Balls, which they found to have a short lifespan. They noted that the NACHI bearings are on par with the Timken bearings they have used in the past, and are typical of high-quality Japanese bearings. A third customer who used the bearings as replacement parts for a polaris pb4-60 booster pump reported that they worked well but did not eliminate all the noise from the motor. Overall, the NACHI Brand Rubber Seal Ball Bearing appears to be a reliable and high-quality product that can be used in a variety of applications.
Customer Reviews & Ratings
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Pros
- High-quality and reliable product
- Can be used in high-pressure applications
- Comparable to Timken bearings
- Suitable for motorcycles and other vehicles
Cons
- Did not completely eliminate noise in one customer's application
Platform Trust & Buyer Confidence
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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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MMK 62736
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