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6202 ZZ RO Pump Bearings/ Fan Beaings/ Start Motor Bearings(12mm*32mm*10mm)
Model Number: 6202ZZ
Brand: CONTANT
System of Measurement : Metric Bearing
Type: Ball bearing
For Load Direction: Radial
Construction: Single Row Seal
Type: Sealed Inner Diameter： 15 mm
Inner Diameter Tolerance: -0.007mm to 0
Inner Diameter Ellipticity： ≤0.005mm
Outer diameter： 35mm
Outer diameter Tolerance： -0.009mm to 0
Outer Diameter Ellipticity： ≤0.007mm
Width: 11 mm
Width Tolerance ： -0.12mm to 0
Dynamic Radial Load： 7.65KN
Static Radial Load： 3.75KN
Max Speed ： 24000 rpm
Ball number： 8
Steel ball diameter ： ¢5.953mm
Ring Material : Chrome
Steel Ball Material: Chrome
Steel Cage Material: Stainless Steel(Nylon)
Lubrication ： Grease
Temperature Range： -30° to 120 °C
Tolerance Class： P6
Weight： 0.045 KG
Model Interpretation：
6: Type code, stands for "deep groove ball bearing". This is the most common and widely used type of rolling bearing.
2: Size series code, indicating that this is a "light (2) series" bearing, which describes the size ratio of its width to its outer diameter.
02: Bore diameter code. 02 means the bearing's bore size is 02 * 5 = 10mm. This is the standard method for calculating the bore diameter.
ZZ: Suffix code. Z means a single-sided metal dust cover, and ZZ means the bearing has metal dust covers on both sides. This means it has good dustproof performance, but is usually non-contact, so the speed performance is slightly higher than that of open (no cover) or with seals (RS, 2RS), but the dust and oil leakage resistance are not as good as contact seals.
Summary: 6202ZZ is a light series deep groove ball bearing with a bore diameter of 10mm and metal dust covers on both sides.
Key Features
Based on its type and construction, the 6202ZZ bearing has the following characteristics:
① Mainly supports radial loads, but can also withstand a certain amount of bidirectional axial loads (combined loads).
② Low to medium torque: Low friction and smooth operation.
③ High speed capability: Deep groove ball bearings are inherently suitable for high-speed rotation, and the ZZ dust cover is a non-contact design, which has minimal impact on speed.
④ Dust and debris protection: Double-sided metal dust covers effectively prevent large solid particles (such as dust and debris) from entering the bearing interior, extending bearing service life.
⑤ Pre-lubricated: Typically pre-lubricated with grease (such as lithium-based grease) at the factory, relubrication is generally not required throughout the bearing's lifespan (maintenance-free).
Economical and practical: High standardization results in low production costs, affordable prices, and easy availability.
Wide range of applications
Motors and Generators
This is the most extensive application area. It can be found in almost all small motors.
Household Appliances: Washing Machine Motors, Air Conditioner Indoor and Outdoor Fan Motors, Vacuum Cleaner Motors, Range Hood Motors, Water Pump Motors, etc.
Industrial Motors: Small Three-Phase Asynchronous Motors, Servo Motors, Stepper Motors, Geared Motors, etc.
Tools: Power Tools such as Hand Drills, Angle Grinders, and Sanders.
Precision Instruments and Equipment
Office Equipment: Paper feed rollers and motors for printers, copiers, and scanners.
Measuring Instruments: Rotating parts of various meters and optical instruments.
Automotive Industry
Although not a core component of the engine or transmission, it is widely used in auxiliary systems:
Automotive alternators and starter motors (starters).
Water pumps, tensioners, and idler pulleys.
Air conditioning compressors and fans.
Window regulators and wiper motors.
Drive System
Support for the driven shaft of a light belt or chain drive.
Support for the shaft system of a gearbox or transmission.
Everyday consumer goods
Wheels for scooters and roller skates.
Motors for toy models (such as remote-controlled cars and quadcopters).
Rotating parts of fitness equipment.
Selection Considerations
When selecting and using the 6202ZZ bearing, consider the following:
Load Type and Size: Ensure that radial loads are predominant and that the load values are within the bearing's rated dynamic and static loads.
Speed Requirements: While high speeds are acceptable, ensure that the application speed is below its maximum speed.
Operating Environment:
-----ZZ Dust Cover vs. RS Seal: If the environment is dusty and humid but does not require water or oil mist protection, the ZZ cover is a good choice. If protection against liquid (water, oil) intrusion or grease leakage is required, choose a model with a rubber seal (such as the 6202-2RS or 6202-2Z/RS).
-----Temperature: The grease and cage used in the standard 6202ZZ bearing have a specific operating temperature range (typically -30°C to +120°C). Extreme temperature environments require specialized greases and materials.
Mounting and Alignment: Ensure the machining accuracy of the shaft and housing to avoid misalignment (misalignment) of the inner and outer rings caused by improper installation, which can significantly increase noise and reduce bearing life.
Alternative models: In some cases, these bearings are interchangeable with other similar bearings. For example:
----6202-2RS: Features contact rubber seals on both sides, providing improved sealing but with a slightly lower maximum speed.
----6202Z: Features a metal dust cover on one side (less common).
----6202: Open-type bearing without any covers or seals. Suitable for clean environments and high-speed applications, but requires custom-designed external seals.
In summary, the 6202ZZ is an extremely versatile, reliable and cost-effective small bearing. It is the "standard part" and preferred solution for many small rotating machinery devices. It is particularly dominant in motor applications that require dust protection and medium to high speeds.
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