Ball bearings in popular metric sizes for shaft sizes from 10mm to 30mm
See product table below for dimensions and technical drawings
See Products Variants below for low noise options
The full name for these ball bearings is “deep groove radial ball bearings”. They are designed primarily for radial loads but will also withstand thrust or axial loads in both directions. They have a thrust load capacity of up to 50% of the bearing’s static radial load rating for the heavy duty sizes such as the 6300 series. These popular metric ball bearings are manufactured from SAE52100 (100Cr6) chrome steel. For noise sensitive applications, we recommend using either EZO brand or our P6 low noise, electric motor grade bearings (see Products Variants below). The 6202 bearing size is a popular option, included in the size options below.
Chrome steel is the most common material for ball bearings due to its high load capacity and good low noise properties. Chrome steel bearings are also more cost-effective. These popular metric bearings, with a steel retainer and a suitable lubricant, can be used at temperatures of 120°C constant or up to 150°C intermittent. Above these temperatures, the load capacity of chrome steel is reduced. These bearings are not suitable for use in corrosive environments as the steel is not corrosion resistant. The standard cage or retainer is a two-piece ribbon type made from SPCC steel strip.
Due to the lack of corrosion resistance and temperature limits for this range, different materials should be chosen for very high temperatures or corrosive environments. Fortunately, SMB Bearings stock corrosion resistant bearings and bearings for extreme temperatures in alternative materials for most sizes listed below such as 440 grade stainless steel, marine grade 316 stainless steel and ceramic.
Open popular metric bearings are supplied with oil lubrication. Shielded or sealed bearings are usually supplied with grease lubrication but shielded bearings can be lubricated with oil for low speed, low friction applications. Thanks to our in-house relubrication facility, open, shielded or sealed bearings can be offered with customer specified oils, greases or dry lubricants.
Click on INFO in the rows below to display technical drawings of the bearings with load and speed data. Please note that the maximum loads and speeds are used in theoretical life calculations. It is recommended to use bearings at significantly less than the maximum load and speed ratings to ensure reasonable bearing life.