FAG in mining: which bearings are used in crushers, mills, screens and conveyor belts

In mining, FAG special bearings are designed for conditions that standard bearings cannot withstand: very high loads, constant vibration, dust or water contamination and extreme temperatures. These bearings usually have particular designs in their cages, seals or internal geometry to adapt to each piece of equipment. That is why, when a mill or a crusher fails, the solution is often a special bearing and not a generic one.

Each special bearing has its own dimensions and load capacities, so it is essential to verify the complete code before replacing. If your equipment carries a part of this type, send us the engraved code and we will look it up in the catalog.

To order a FAG special bearing, it is best to send the code engraved on the part or, if it cannot be read, the exact bore, outside diameter and width dimensions. A photo of the bearing and of the mounting location also helps. At MR we stock these bearings and provide a quote via WhatsApp or email with that data.

FAG spherical roller bearings are a common choice in mining equipment because they withstand very high radial loads and, at the same time, shaft misalignment. In mills and crushers, where shafts can deflect due to weight and impacts, this self-aligning capability prevents premature failures. In addition, their two-row roller design allows them to absorb combined loads.

In this category, codes such as 23952-MB, 23972-MB and 23964-MB are examples of FAG spherical roller bearings found in mining applications. Each code defines the dimensions and load capacity, so it is best to confirm the complete code before ordering.

When ordering a FAG spherical roller bearing for mining, it is key to indicate whether the bore is cylindrical or tapered, since many are mounted on adapter sleeves. It is also advisable to verify the internal clearance, which in mining is usually greater than normal (for example, C3) to compensate for thermal expansion. We distribute these bearings and help you identify the correct variant.

FAG cylindrical roller bearings stand out for their high radial load capacity. In mining, they are used in conveyor belt pulleys, gearboxes and electric motors, where the shaft rotates under constant loads.

Codes NNC4920V, NNC4912V and NNC4930V are examples of FAG cylindrical roller bearings. The complete code, including the final letters, must always be respected when replacing.

To get a quote for a FAG cylindrical roller bearing, send the complete code and, if possible, a photo of the part. It is also useful to know whether it has flanges on the inner or outer ring, because that defines how it is mounted and dismounted. At MR we work with these bearings and indicate the exact alternative for your equipment.

FAG tapered roller bearings withstand combined loads: radial and axial in a single direction. That is why they are used in wheels of wheel loaders, mining trucks, conveyor pulleys and other equipment where the shaft receives forces from different angles. Their design allows the internal clearance to be adjusted during mounting, which extends service life.

Examples in this category are codes 32326, 32344 and 32920, which correspond to FAG tapered roller bearings frequently used in mining. They are mounted according to the equipment design, and the complete code defines the exact dimensions.

When ordering a FAG tapered roller bearing, it is important to indicate whether the complete set (cone and cup) is needed or only one part. It is also advisable to measure the bore and outside diameter to confirm the code. We stock these bearings and provide a quote just by sending us the code or the dimensions.

FAG deep groove ball bearings are the most common and versatile: they withstand moderate radial and axial loads, operate at high speeds and are easy to mount. In mining they appear in electric motors, pumps, fans and auxiliary equipment where loads are not so extreme but reliability is key. Their low friction helps reduce energy consumption.

Codes such as 6020, 6003 and 6021 are examples of FAG deep groove ball bearings used in the mining industry. These bearings can have seals (2RS) or metal shields (2Z) to protect them from dust, which is very common in mining environments.

To get a quote for a FAG deep groove ball bearing, the complete code is enough, but if it cannot be read, measure the bore, outside diameter and width. Also indicate whether you need the sealed or open version, because that changes the code. We distribute these bearings and reply promptly with the quote.

FAG angular contact bearings are designed to withstand axial loads in one direction and simultaneous radial loads. In mining they are used in centrifugal pumps, compressors and gearboxes where there are significant axial thrusts. They are usually mounted in pairs or in sets to absorb loads in both directions.

FAG axial ball bearings, on the other hand, withstand only axial loads, such as those generated by screw conveyors or lifting systems. Although they are not as common as radial bearings, they play a critical role in certain mining equipment. In both cases, mounting precision and proper lubrication are essential to prevent failures.

When ordering these bearings, it is key to specify the contact angle and whether they are needed in pairs. It is also advisable to send the complete code or the dimensions. At MR we stock FAG angular contact and axial ball bearings, and we advise you on choosing the correct configuration.

The most common mistake when ordering bearings for mining is to rely only on dimensions and not on the complete code. Suffixes and prefixes indicate internal characteristics that affect performance: cage type, internal clearance, seals, etc. That is why you should always copy the code exactly as engraved on the part, including letters and numbers.

If the bearing is badly damaged and the code cannot be read, the main dimensions can be measured with a caliper: bore, outside diameter and width. With that, at MR we can identify the correct reference. It also helps to know which equipment it is mounted on and what brand it originally had, because that way we can look for exact equivalents.

To get a quote, send us the code, the dimensions or a photo of the part via WhatsApp or email. We reply with the quote and, if needed, indicate the appropriate FAG alternative for your application. We work with FAG bearings for the mining industry from Buenos Aires, Argentina.