Deep groove ball bearing NSK FR 4B ZZ

NSK FR 4B ZZ is a deep groove ball bearing reference, within Bearings. Request a quote for FR 4B ZZ via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NSK FR series deep groove ball bearing is a bearing with a mounting flange, designed for applications where axial space is limited and direct fastening onto sheet metal or a housing is needed. Its designation combines the diameter and the type of closure: in the example FR 4B ZZ, the letters FR indicate the flanged series, the number and the letter B define the size, and the ZZ suffix indicates double metal sealing. It is used in equipment that requires low torque and protection against dust.

The FR series designation is read as follows: the letters FR identify a deep groove ball bearing with an outer flange for direct mounting. The number and letter that follow, as in FR 4B, indicate the size and the flange variant. The suffixes provide information about the closure: ZZ corresponds to two metal shields that protect against dust and dirt without slowing rotation. Other possible suffixes, such as 2RS, indicate rubber seals for greater tightness. Knowing this logic allows you to interpret any code in the series and order the correct replacement.

In Argentine industry, these bearings appear in fans, extractors, small motors, circulation pumps, refrigeration equipment and office machines. They are also found in household appliances and in light transmission mechanisms where a flange is needed to fasten the bearing to sheet metal without machining a housing. Their ability to withstand moderate radial and axial loads makes them versatile for low and medium power rotating equipment.

To select the correct bearing, take into account the type of sealing: ZZ is suitable for dusty environments and requires little lubrication, while 2RS offers better grease retention and water resistance. The flange must match the diameter and holes of the housing. During mounting, avoid hitting the seals and check alignment so as not to load the edges. Factory lubrication is usually enough for the entire service life in normal applications; under severe conditions, choose the variant with rubber seals.

If you need to replace a bearing from another brand, the FR series has equivalents in catalogs such as SKF, FAG or NTN, which usually share the main dimensions. Interchangeability depends on the bore diameter, the flange outer diameter and the total width matching. To be sure, send us the complete code of the original part and we will tell you the equivalent NSK reference. We can also quote you the exact size shown on your drawing or sample.

To get a quote for the NSK FR series bearing you need, write to us on WhatsApp with the complete code, for example FR 4B ZZ, or with the flange measurements and the bore diameter. At MR Accesorios Industriales we reply promptly with the available reference and compatible alternatives. We can also advise you on the most suitable sealing according to the working environment. Send your inquiry and we will help you solve it.

This description provides guidance on the product type. Check the configuration and dimensions of this reference.