Correctly Measure Bore and Outer Diameter
Bore tolerance follows ISO standards; P6 grade is common for precision applications, while P0 suits general use. Use a calibrated micrometer to measure the bore’s actual size—even 0.02mm deviation causes fit misalignment. A 6205 series bearing has a standard 25mm bore, 52mm outer diameter, and 15mm width, so verify dimensions against your housing and shaft specs. MS Bearings provides dimensional check charts for all standard series to avoid ordering errors.Match Radial vs. Combined Load Requirements
Deep groove ball bearings handle most radial loads, with light axial load capacity. The 6205 model offers 15kN radial load and 2.5kN axial load. For combined loads (radial + axial), choose a higher-rated series like 6305 (19kN radial, 3.2kN axial). Overloading axial force reduces bearing lifespan by 40% in extreme cases, causing early race wear. Always calculate load ratios using manufacturer data to prevent failure.Verify Speed and Temperature Limits
Max speed depends on lubrication: grease-lubricated 6205 runs at 12,000 RPM, while oil-lubricated variants reach 15,000 RPM. Standard steel bearings work up to 120°C; high-temperature versions (suffix 2Z/RS) handle 150°C. For high-speed conveyor systems, deep groove ball bearings cut friction by 30% compared to plain bearings, reducing energy consumption. Check speed limits to avoid overheating and premature fatigue.What is the lifespan of a correctly selected deep groove ball bearing?
A properly matched deep groove ball bearing lasts 20,000–50,000 hours under standard operating conditions, based on load and lubrication quality.
Can I use a deep groove ball bearing for axial loads only?
No, deep groove ball bearings are designed primarily for radial loads; axial loads should not exceed 10% of radial capacity to prevent damage.
For project-specific requirements, consult your bearing supplier. Contact MS Bearings for free technical support.