The Ultimate Guide to 6202 Bearing Specifications: Essential Insights for Engineers and Technicians

Introduction

The 6202 bearing is a widely used deep groove ball bearing with precise dimensions and high load-carrying capacity. It finds applications in various industries, including automotive, aerospace, and manufacturing. Understanding the specifications and properties of the 6202 bearing is crucial for optimal performance and reliability.

Understanding Bearing Designation

The 6202 bearing designation follows ISO standards and specifies its dimensions and type. The first digit, 6, denotes a deep groove ball bearing. The second digit, 2, indicates a single row. The third and fourth digits, 02, represent the diameter code, which is 15 mm for the 6202 bearing.

Specifications

The 6202 bearing has the following specifications:

Bore Diameter:

• Nominal Bore Diameter: 15 mm
• Tolerance Class: 0
• Minimum Bore Diameter: 14.995 mm
• Maximum Bore Diameter: 15.005 mm

Outer Diameter:

• Nominal Outer Diameter: 35 mm
• Tolerance Class: 0
• Minimum Outer Diameter: 34.99 mm
• Maximum Outer Diameter: 35.01 mm

Width:

• Nominal Width: 11 mm
• Tolerance Class: 0
• Minimum Width: 10.99 mm
• Maximum Width: 11.01 mm

Radial Clearance:

• Internal Clearance: C2
• Radial Clearance: 0.015 - 0.035 mm

Mass:

• Mass: 50 grams

Dynamic Load Rating:

• Basic Dynamic Load Rating (Cr): 13.1 kN
• Dynamic Load Rating at 90% Reliability (Cor): 11.2 kN

Static Load Rating:

• Basic Static Load Rating (C0): 3.7 kN
• Static Load Rating at 90% Reliability (Cor): 3.1 kN

Limiting Speed:

• Limiting Speed: 6,000 rpm

Lubrication:

• Lubrication Type: Grease or Oil
• Amount: 2.5 - 5.0 grams

Material and Heat Treatment

The 6202 bearing is typically made of high-carbon chromium steel (AISI 52100 or GCr15). It undergoes heat treatment processes such as hardening and tempering to achieve optimal hardness and toughness.

Applications

The 6202 bearing finds applications in a wide range of industries, including:

• Automotive (e.g., wheel bearings, transmission shafts)
• Aerospace (e.g., landing gear, flight controls)
• Industrial machinery (e.g., pumps, compressors, conveyors)
• Power tools (e.g., drills, grinders, saws)
• Home appliances (e.g., washing machines, refrigerators)

Advantages

• High load-carrying capacity due to deep groove design
• Long service life with proper maintenance and lubrication
• Interchangeability with bearings of the same size from different manufacturers
• Versatile applications across industries

Disadvantages

• Less suitable for high-speed applications due to limiting speed
• Can generate noise if not properly lubricated or damaged
• Sensitive to contamination and requires regular inspection

Failure Modes

Common failure modes of the 6202 bearing include:

• Wear and tear due to friction and load
• Fatigue due to repeated loading
• Corrosion due to moisture or chemicals
• Contamination due to foreign particles

Maintenance and Inspection

Regular maintenance and inspection are crucial to prolong the lifespan and optimize the performance of the 6202 bearing. This involves:

• Proper lubrication with the recommended amount and type of lubricant
• Inspection for signs of wear, damage, or contamination
• Replacement of bearings if necessary

Selection Considerations

When selecting a 6202 bearing, consider the following factors:

• Load requirements (radial and axial)
• Speed of operation
• Operating temperature
• Lubrication conditions
• Environmental factors (e.g., humidity, chemicals)

Troubleshooting

Common troubleshooting tips for 6202 bearing issues include:

• Noise: Check for proper lubrication, bearing damage, or contamination.
• Vibration: Inspect for bearing alignment, load imbalance, or shaft misalignment.
• Overheating: Consider excessive load, insufficient lubrication, or contamination.

Case Studies

• Case Study 1: In an automotive application, premature bearing failure was traced back to inadequate lubrication and contamination, leading to wear and fatigue.
• Case Study 2: In an aerospace application, a 6202 bearing experienced noise and vibration, which was resolved by replacing the damaged bearing with a new one.
• Case Study 3: In an industrial machinery application, regular bearing inspections and timely lubrication prevented bearing failures, extending the lifespan of the equipment.

What We Learn from These Stories

• Importance of proper lubrication: Regular lubrication is crucial for bearing performance and longevity.
• Consequences of contamination: Contaminants can lead to bearing damage and premature failure.
• Value of preventive maintenance: Regular inspections and maintenance can identify and address potential issues early on, preventing costly breakdowns.

How to Install a 6202 Bearing (Step-by-Step)

1. Clean the bearing housing and shaft thoroughly.
2. Apply a thin layer of lubricant to the bearing bore and shaft.
3. Carefully insert the bearing into the housing, using a bearing press or similar tool if necessary.
4. Secure the bearing with a snap ring or other retaining device.
5. Repeat the process for the other bearing (if applicable).
6. Check for proper alignment and tighten the retaining device securely.

Pros and Cons of 6202 Bearing

Pros:

• High load-carrying capacity
• Long service life
• Interchangeable with bearings from different manufacturers
• Suitable for various applications

Cons:

• Less suitable for high-speed applications
• Can generate noise if not properly lubricated or damaged
• Sensitive to contamination

FAQs

1. What is the maximum speed for the 6202 bearing? 6,000 rpm
2. What type of lubricant is recommended for the 6202 bearing? Grease or oil
3. How often should I lubricate the 6202 bearing? According to the manufacturer's recommendations, typically every 3-6 months
4. What are the common failure modes of the 6202 bearing? Wear and tear, fatigue, corrosion, and contamination
5. How do I install a 6202 bearing? Refer to the step-by-step instructions provided earlier in this article
6. Can I use a 6202 bearing from any manufacturer? Yes, as long as it meets the same specifications and dimensions
7. What is the material of the 6202 bearing? Typically high-carbon chromium steel (AISI 52100 or GCr15)
8. What is the weight of the 6202 bearing? Approximately 50 grams

Call to Action

Understanding the specifications and characteristics of the 6202 bearing is essential for choosing the right bearing for your application. Proper maintenance and lubrication are crucial for optimizing its performance and lifespan. Keep these key points in mind when selecting, using, and maintaining 6202 bearings to ensure reliability and efficiency in your projects.