FAG bearings in oil and gas: applications and selection criteria

FAG bearings in oil and gas are used in critical equipment where reliability defines operational continuity. From centrifugal pumps to compressors and beam pumping units, each position requires a bearing suited to loads, speeds and lubrication conditions.

Choosing the right bearing starts with understanding the equipment and its operating regime. A bearing for a gas compressor is not the same as one for an injection water pump, even if both are FAG. Radial, axial and combined loads, rotational speed and operating temperature define the type and series. That is why at MR we work with the FAG lines specific to each subcategory.

In this guide we review typical applications and the FAG bearings best suited to each one. We also tell you what data to have on hand to request a quote and what mistakes to avoid when ordering or mounting. If you have the code or size, we will quote it promptly. The more equipment information you provide (machine type, bearing position, whether it is the fixed or floating side of the shaft), the faster we identify the correct reference.

FAG special bearings cover positions where standard series are not enough. In oil and gas they are used in equipment with high loads, vibrations or precision requirements. They usually have a particular design of rings, cage or internal clearance, which depends on each equipment manufacturer.

These bearings usually have particular dimensions and characteristics, so it is key to identify them by the code engraved on the ring. If the part is badly damaged, you can measure inner diameter, outer diameter and width, and use that to find the equivalent. At MR we distribute FAG special bearings and help you confirm the correct reference.

A common mistake is replacing a special bearing with a standard one of similar dimensions. That can lead to premature failures and unscheduled downtime. It is always best to respect the original specification or consult a specialist, and keep a record of the code of the removed bearing for future replacements. Send us a photo of the bearing and the equipment, and we will indicate the appropriate alternative.

FAG spherical roller bearings are widely used in oil and gas equipment because of their capacity to withstand high radial loads and some misalignment. In pumps, fans and gearboxes, this series offers robustness and long service life. Codes 23952-MB, 23972-MB and 23964-MB are examples of spherical roller bearings seen in industrial applications.

These bearings are usually mounted in positions where the shaft can flex or where the housing does not guarantee perfect alignment. Their self-aligning capability reduces stress at the roller edges and improves load distribution.

When ordering an FAG spherical roller bearing, it is advisable to verify the internal clearance and the bore type. Some equipment requires a tapered bore with an adapter sleeve. If you are not sure, send us the full code and the application. At MR we distribute FAG spherical roller bearings and quote the exact reference.

FAG cylindrical roller bearings stand out for their radial load capacity and suitability for high speeds. In compressors, turbines and centrifugal pumps, this series is a frequent choice. There are single-row and double-row versions, and they are identified by the full code engraved on the ring.

These bearings are usually used in floating positions, where the outer ring can move axially to absorb thermal expansion. That makes them ideal in equipment with temperature gradients.

When replacing a cylindrical roller bearing, it is important to respect the original code and the fit type. A mounting error can cause sliding between raceway and rollers. If you have the code or dimensions, we will quote it. At MR we distribute FAG cylindrical roller bearings for the oil industry.

FAG tapered roller bearings support combined radial and axial loads, typical in wheels, reduction gearboxes and beam pumping equipment. In oil and gas they are used in transmissions and rotating equipment. Codes 32326, 32344 and 32920 are examples of tapered roller bearings.

These bearings are generally mounted in pairs, face-to-face or back-to-back, to control axial clearance. Clearance adjustment is critical: too little generates heat and wear, too much causes vibration. That is why mounting must follow the equipment manufacturer's specifications.

When requesting a quote for a tapered roller bearing, indicate whether it is for a fixed or floating position and whether it has a sheet steel or brass cage. It is also useful to know whether the bearing is single-row or double-row. At MR we distribute FAG tapered roller bearings and help you choose the correct configuration.

FAG deep groove ball bearings are the most versatile and are used in electric motors, small pumps and auxiliary equipment in oil and gas plants. They support moderate radial and axial loads, and work well at high speeds. Codes 6020, 6003 and 6021 are examples of this series.

In surface equipment, such as metering pumps or fans, deep groove ball bearings are a common solution. They usually have seals or shields depending on lubrication: 2RS for rubber seal on both sides, 2Z for metal shield. C3 internal clearance is common in applications with elevated temperature.

When ordering a deep groove ball bearing, verify whether the original has seals or shields and whether the clearance is standard or C3. A frequent mistake is ordering an open bearing when the equipment requires sealing. Send us the code or dimensions, and we will quote the appropriate FAG bearing.

FAG angular contact bearings are used in centrifugal pumps and compressors where there are significant axial loads in one direction. They are mounted in pairs or in sets to support combined loads and maintain shaft rigidity. In oil and gas, they are common in multistage pumps and screw compressors.

In addition to angular contact bearings, FAG offers axial ball bearings and self-aligning ball bearings for specific positions. Axial ball bearings support purely axial loads, as in vertical pumps. Self-aligning ball bearings tolerate misalignment and are used in applications with long shafts.

For these bearings, the full code is key. Do not improvise with a similar bearing without validating the reference. At MR we distribute FAG bearings and advise you on selection.