The 6200 bearing is one of the most widely used deep groove ball bearings in mechanical engineering. Whether you are replacing a worn bearing in an electric motor, selecting components for a power tool, or designing agricultural equipment, understanding the specifications and options of the 6200 bearing is essential. This guide covers the dimensions, material composition, types, applications, and selection criteria for the 6200 bearing series.
6200 Bearing Dimensions and Specifications
The 6200 bearing conforms to ISO 15 standard dimensions, ensuring interchangeability across manufacturers including SKF, NSK, FAG, NTN, and Timken.
| Parameter | Value |
|---|---|
| Inner Diameter (d) | 10 mm |
| Outer Diameter (D) | 30 mm |
| Width (B) | 9 mm |
| Weight | Approx. 32 g |
| Dynamic Load Rating (Cr) | 400 kgf |
| Static Load Rating (Cor) | 229 kgf |
The limiting speed varies by sealing type. Open-type bearings can operate at up to 30,000 rpm with oil lubrication (or up to 24,000 rpm with grease). ZZ bearings typically have a limiting speed of 24,000 rpm with grease lubrication. Rubber-sealed versions (2RS) have lower speed ratings due to increased friction, typically around 16,000–24,000 rpm.
The bearing is manufactured with standard tolerance class P0 (Normal) unless specified otherwise. Higher precision grades such as ABEC 3, ABEC 5, and ABEC 7 are available for applications requiring tighter running accuracy.
What Is a 6200 Bearing Made Of?
The 6200 deep groove ball bearing consists of four primary components:
Inner Ring and Outer Ring
The rings are typically manufactured from high-carbon chromium bearing steel GCr15, equivalent to AISI 52100 or SUJ2. This material provides excellent hardness (HRC 60–66 after heat treatment), wear resistance, and fatigue strength. For applications requiring corrosion resistance, stainless steel versions (AISI 440C) are available.
Balls (Rolling Elements)
The balls are also made from GCr15 bearing steel or stainless steel, precision-ground to achieve smooth surface finish and consistent sphericity.
Cage (Retainer)
The standard cage for 6200 bearings is a pressed steel ribbon-type cage, which offers good strength and high-speed capability. Alternative cage materials include PA66 (nylon) for reduced noise and brass for heavy-duty applications.
Seals and Shields
For closed-type bearings, the sealing components are made from metal (for Z/ZZ shields) or NBR rubber (for RS/2RS contact seals). Rubber seals provide better protection against moisture and fine dust, while metal shields minimize friction for higher-speed operation.
Types of 6200 Bearing
The 6200 bearing is available in several configurations, each suited to different operating conditions.
6200 (Open Type)
The open-type bearing has no seals or shields on either side. It offers the highest speed capability (up to 30,000 rpm) and lowest friction, but requires regular lubrication and is not protected against contaminants. Open bearings are best suited for clean environments where the bearing can be accessed for routine maintenance.
6200Z (Single Shield)
This configuration has a metal shield on one side, providing partial protection from dust and debris on that side. The 6200Z is commonly used in applications where one side of the bearing is exposed to the environment while the other side is protected by the equipment housing.
6200ZZ (Double Shield)
The double-shielded 6200ZZ features metal shields on both sides. Metal shields are non-contact, meaning they do not generate additional friction while providing protection against larger dust particles and debris. This configuration requires no relubrication for the intended service life and is speed-optimized, making it the most popular choice for industrial motors and general machinery.
6200-2RS (Double Rubber Seals)
The 6200-2RS bearing has contact rubber seals on both sides. Rubber seals provide superior protection against water, fine dust, and grease leakage compared to metal shields. However, the contact seals generate slightly higher friction, which reduces the maximum permissible speed. This type is ideal for harsh environments such as agricultural equipment, outdoor power tools, and applications exposed to moisture.
6200-2RZ (Non-Contact Rubber Seals)
Some manufacturers also offer 6200-2RZ bearings with non-contact rubber seals. These provide better protection than metal shields while maintaining lower friction than contact seals, offering a balance between protection and speed performance.
How to Choose the Suitable Cover for Your 6200 Bearing
Selecting the correct sealing type for your 6200 bearing depends on three primary factors:
Application Environment
- Clean, dry environment with regular maintenance access: Open type (6200) is acceptable.
- Dusty environment but no moisture: ZZ (double metal shield) provides adequate protection.
- Wet or dirty environment, outdoor use: 2RS (double rubber seal) is recommended.
- Food processing or chemical exposure: Stainless steel material with rubber seals may be required.
Speed Requirements
- For high-speed applications (>20,000 rpm), open or ZZ types are preferred.
- For moderate speeds, 2RS is acceptable but verify the speed rating against your application.
Maintenance Considerations
- Open bearings require regular relubrication schedules.
- Sealed bearings (ZZ, 2RS) are pre-lubricated and require no maintenance for the rated life.
Installation Note: When installing a 6200 bearing, the minimum shaft shoulder diameter (da min) is 14.2 mm, and the maximum housing shoulder diameter (Da max) is 25.8 mm. Bearings should be installed using a press fit on the rotating ring; avoid striking the bearing directly with a hammer to prevent raceway damage.
Characteristics of 6200 Bearing
The 6200 bearing exhibits several characteristics that contribute to its widespread adoption:
Standardized Size – The 10 mm × 30 mm × 9 mm dimensions conform to international standards, ensuring straightforward replacement and cross-reference across brands.
High Load Capacity – The deep groove raceway design allows the bearing to accommodate radial loads as well as axial loads in both directions. The dynamic load rating of 400 kgf is sufficient for most light-to-medium duty applications.
High Speed – With appropriate sealing and lubrication, the 6200 bearing can operate at speeds up to 24,000–30,000 rpm, making it suitable for high-speed machinery.
Low Friction Loss – The ball-to-raceway contact geometry minimizes frictional torque, contributing to energy efficiency and reduced operating temperatures.
Strong Durability – Manufactured from hardened bearing steel with precise heat treatment, the 6200 bearing offers excellent fatigue resistance and service life under proper operating conditions.
Wide Adaptability – Available in multiple sealing configurations, tolerance grades, and cage materials, the 6200 bearing can be adapted to a broad range of applications across industries.
What Does the 6200 Bearing Code Mean?
The designation “6200” follows the standardized bearing numbering system used by most international manufacturers.
Digit 1 – Type Code (6)
The number 6 indicates a single-row deep groove ball bearing. This is the most common type of rolling bearing, characterized by its simple design, low friction, and ability to handle both radial and axial loads.
Digit 2 – Diameter Series (2)
The number 2 denotes the “light series” of bearings. In the radial bearing series classification, 0 and 1 represent extra-light series, 2 represents light series, 3 represents medium series, and 4 represents heavy series. A higher series number indicates a larger cross-section for a given bore diameter, providing greater load capacity.
Digits 3–4 – Bore Size (00)
For bearing codes from 00 to 03, the bore size is calculated by multiplying the code number by 5 mm. Code 00 corresponds to a bore of 0 × 5 + 0 = 10 mm. For codes 04 and above, the bore size is the code number multiplied by 5 mm directly.
Suffix Letters – Sealing Configuration
- Z: Metal shield on one side
- ZZ or 2Z: Metal shields on both sides
- RS or 2RS: Rubber contact seals on one or both sides
- RZ or 2RZ: Rubber non-contact seals on one or both sides
Additional suffixes may indicate specific internal clearance (C3, C4), tolerance class (P5, P6), or cage material (TN for nylon cage).
Where Is the 6200 Bearing Used?
The 6200 bearing is utilized across a wide range of industries due to its versatile design and reliable performance.
Industrial Machinery
In electric motors, the 6200 bearing supports rotating shafts in applications ranging from small fractional horsepower motors to larger industrial drives. It is also found in pumps, compressors, gearboxes, and conveyor systems, where it handles radial loads and enables smooth rotation.
Power Tools
Handheld power tools such as drills, angle grinders, circular saws, and sanders commonly use 6200 bearings to support high-speed spindles. The bearing’s ability to operate at high RPMs while maintaining low noise and vibration is critical for tool performance and user experience.
Automotive Industry
The 6200 bearing is used in various automotive applications including alternators, starter motors, engine cooling fans, and water pumps. In these applications, the bearing must withstand temperature variations, vibration, and moderate contamination.
Household Appliances
Washing machines, air conditioners, fans, and vacuum cleaners incorporate 6200 bearings in their motors and rotating assemblies. The bearing’s low-noise characteristics are particularly important in consumer appliances.
Agricultural Machinery
The 6200-2RS (rubber-sealed) variant is widely used in agricultural equipment such as tractors, harvesters, and gardening machinery, where exposure to dust, dirt, and moisture is common.
Other Applications
Additional uses include textile machinery, printing equipment, office automation devices, skateboards, roller skates, and 3D printers.
Common Problems and Troubleshooting
Even with proper selection, bearings may experience issues during operation. Recognizing early warning signs can prevent costly equipment failures.
Common Symptoms and Possible Causes
| Symptom | Possible Causes |
|---|---|
| Unusual noise (grinding, squealing) | Contamination, insufficient lubrication, raceway damage |
| Excessive vibration | Wear or damage to rolling elements, improper mounting |
| Overheating | Over-greasing, excessive load, incorrect fit |
| Rough rotation | Debris in raceway, seal damage, brinelling |
| Rust or discoloration | Moisture ingress, corrosive environment |
Lubrication failure is the most common cause of premature bearing failure, accounting for more than half of all bearing issues. Other common causes include improper mounting (misalignment, excessive interference fit), foreign matter intrusion, and excessive load.
Basic Troubleshooting Steps
- Check lubrication: Verify the correct type and quantity of grease or oil is present.
- Inspect for contamination: Look for signs of dirt, moisture, or foreign particles entering the bearing.
- Examine mounting: Confirm proper fit between the bearing and shaft/housing.
- Replace if damaged: Bearings showing signs of pitting, spalling, or overheating should be replaced rather than re-used.
Conclusion
The 6200 bearing is a standardized 10 mm × 30 mm × 9 mm deep groove ball bearing available in open, shielded (Z/ZZ), and sealed (2RS) configurations. Its material composition—GCr15 bearing steel rings and balls with a steel cage—provides the durability and load capacity required for electric motors, power tools, automotive components, household appliances, and agricultural machinery. Selection of the appropriate sealing type depends on the operating environment, speed requirements, and maintenance accessibility.
Frequently Asked Questions (FAQs)
Q1: What is the difference between 6200ZZ and 6200-2RS?
A1: 6200ZZ bearings have metal shields on both sides, providing lower friction and higher speed capability but less protection against moisture and fine dust. 6200-2RS bearings have rubber contact seals, offering superior protection against water and contaminants at the cost of slightly higher friction and lower maximum speed.
Q2: Can 6200ZZ and 6200-2RS be used interchangeably?
A2: These two types have the same dimensions and can physically fit in the same housing. However, they should be exchanged carefully because the sealing structures are different. The choice depends on the application’s environmental conditions and speed requirements.
Q3: What is the maximum speed of a 6200 bearing?
A3: The maximum speed depends on the sealing type. Open bearings can reach approximately 30,000 rpm with oil lubrication (or 24,000 rpm with grease). 6200ZZ bearings typically have a limiting speed of 24,000 rpm with grease lubrication. 6200-2RS bearings have lower speed ratings, typically 16,000–24,000 rpm, due to seal friction.
Q4: What does the “2” in 6200 mean?
A4: The “2” indicates that the bearing belongs to the light series diameter series. In the bearing numbering system, 2 represents light series, while 3 represents medium series and 4 represents heavy series. A higher series number indicates a larger cross-section and higher load capacity.
Q5: Is the 6200 bearing suitable for axial loads?
A5: The 6200 deep groove ball bearing is primarily designed for radial loads. It can accommodate moderate axial loads in both directions, but for applications with significant axial loading, angular contact ball bearings may be more appropriate.
Q6: What is the standard material of a 6200 bearing?
A6: The rings and balls are typically made from high-carbon chromium bearing steel GCr15, equivalent to AISI 52100 or SUJ2. For corrosion-resistant applications, stainless steel (AISI 440C) versions are available. The standard cage is pressed steel, with nylon and brass cage options also available.
Q7: How do I know if my 6200 bearing needs replacement?
A7: Signs of bearing failure include unusual noise (grinding or squealing), excessive vibration during operation, elevated housing temperature, and rough or irregular rotation when the shaft is turned manually. Visual inspection may reveal rust, discoloration, or visible damage to the bearing surfaces.
Q8: Are 6200 bearings from different manufacturers interchangeable?
A8: Yes. The 6200 bearing follows ISO 15 standard dimensions, meaning the bore, outer diameter, and width are identical across manufacturers such as SKF, NSK, FAG, NTN, and Timken. However, quality levels, internal clearances, and noise characteristics may vary between brands.
