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Single row 6204 deep groove ball bearings are versatile, low-friction bearings designed for smooth and stable rotation. With a 20 mm bore, 47 mm outside diameter and 14 mm width, the 6204 accommodates radial loads and axial loads in both directions and is commonly used in electric motors, water pumps, home appliances, agricultural machinery, conveyors and general industrial equipment.
The 6204 is a standard 6200-series deep groove ball bearing with a 20 mm bore, 47 mm outside diameter and 14 mm width. The specifications below follow the CXJSD 6200-series product data for the standard bearing configuration.
| Parameter | Metric | Imperial |
|---|---|---|
| Bore diameter (d) | 20 mm | 0.7874 in |
| Outside diameter (D) | 47 mm | 1.8504 in |
| Width (B) | 14 mm | 0.5512 in |
| Chamfer (r min) | 1.0 mm | 0.0394 in |
| Basic dynamic load rating (Cr) | 12.8 kN | — |
| Basic static load rating (Cor) | 6.65 kN | — |
| Number of balls | 8 | — |
| Ball diameter | 7.938 mm | 0.3125 in |
| Grease speed | 16,000 rpm | — |
| Oil speed | 18,000 rpm | — |
| Weight | 0.106 kg / 106 g | 0.234 lb |
The 6204 uses a single-row deep groove raceway design with eight rolling balls. The geometry allows the bearing to support radial loads and axial loads in both directions while maintaining smooth and low-friction rotation.
Fits onto the 20 mm shaft and provides the inner raceway on which the balls roll.
Fits into the housing and provides the outer raceway that guides the rolling elements.
Eight 7.938 mm chrome-steel balls roll between the two raceways to carry radial and axial loads.
Keeps the balls evenly spaced around the raceway and helps prevent direct ball-to-ball contact during rotation.
The raceway is exposed on both sides, making the open version suitable for clean environments or applications where external seals provide protection.
Metal shields on both sides provide protection against dust and coarse contaminants while maintaining relatively low friction.
Rubber contact seals provide stronger protection against moisture, dust and fine contaminants for more demanding environments.
With a 20 mm bore, 47 mm outside diameter, 14 mm width and a 12.8 kN dynamic load rating, the 6204 is a versatile choice for rotating equipment requiring compact dimensions, smooth running and reliable radial and axial load support.
Supports rotating shafts while helping reduce friction and maintain smooth, stable motor operation.
Supports pump and motor shafts and helps maintain reliable rotation in continuous-duty equipment.
Used in rotating components of appliances such as fans, washing machines and other household equipment.
Supports rotating shafts and transmission components in tractors, seeders and other agricultural equipment.
Used for rollers, shafts and moving components that require dependable low-friction rotation.
Verified feedback from procurement teams and distributors who have ordered this part — shown as submitted, with supplier replies where given.
The 6204 dimensions are a good fit for our motor assembly. We mainly needed a standard 20 × 47 × 14 mm bearing with consistent dimensions and smooth running performance.
We compared the open, ZZ and 2RS versions before ordering. The sealing options made it easier to match the bearing to our operating environment instead of using one configuration for every machine.
For recurring maintenance orders, the standard 6204 size is convenient because the 20 mm bore and 47 mm outside diameter are easy to match with our existing equipment.
Short clips covering 6204 deep groove ball bearing construction, applications, and sealing configurations.
Answers to common questions about 6204 deep groove ball bearing dimensions, sealing options, applications, service life and configuration selection.
A standard 6204 deep groove ball bearing has a 20 mm bore, 47 mm outside diameter, and 14 mm width, commonly expressed as 20 × 47 × 14 mm. Always confirm the bearing dimensions and mounting requirements of your equipment before ordering.
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The basic dimensions are generally the same, but the sealing configuration is different: 6204 is typically the open version, 6204-ZZ uses metal shields on both sides for dust protection and lower friction, while 6204-2RS uses rubber seals on both sides for better protection against dust and moisture.
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6204 bearings are commonly used in electric motors, water pumps, home appliances, agricultural machinery, conveyors, and general industrial equipment because their deep groove design can support radial loads and axial loads in both directions while providing smooth rotation.
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Choose 6204-ZZ when you need metal shielding with relatively low friction in a cleaner and drier environment, while 6204-2RS is generally more suitable when stronger protection against dust, dirt, or moisture is important; the better option depends on the equipment's operating environment and speed requirements.
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Use the correct bearing configuration, install it with the proper fitting method, keep contaminants away from the bearing, use suitable lubrication, avoid excessive loads and misalignment, and select the appropriate seal and internal clearance for the working conditions to help achieve longer and more reliable service life.
