FAG BEARINGS

FAG cylindrical roller bearings with NU design have two integral ribs on the outer ring and no ribs on the inner ring. This configuration allows the inner ring to move axially relative to the outer ring, accommodating shaft expansion or contraction. NU design bearings support high radial loads but cannot take significant axial loads. Other designs, such as NJ, NUP, or N, have different rib arrangements that affect axial load capability and displacement. The NU design is commonly used in gearboxes, pumps, and electric motors where thermal expansion must be accommodated.

3G Electric carries FAG wide cylindrical roller bearings in several sizes, including models 2206 (30 mm bore, 62 mm OD, 20 mm width), 2207 (35 mm bore, 72 mm OD, 23 mm width), 2210 (50 mm bore, 90 mm OD, 23 mm width), 2211 (55 mm bore, 100 mm OD, 25 mm width), 2212 (60 mm bore, 110 mm OD, 28 mm width), 2213 (65 mm bore, 120 mm OD, 31 mm width), and 2311 (55 mm bore, 120 mm OD, 43 mm width). These bearings are made of alloy steel and are suitable for high radial load applications.

Selection depends on shaft diameter, required radial load capacity, speed, expected axial displacement, and available space. Determine the bore size needed for the shaft, then check the outside diameter and width to ensure fit within the housing. Verify the radial load rating meets or exceeds the application load. For applications with thermal expansion, an NU design bearing is appropriate. Consider lubrication method, operating temperature, and misalignment. FAG catalogs provide load ratings and speed limits. 3G Electric can assist with cross-referencing and availability.

FAG cylindrical roller bearings typically use through-hardened or case-hardened alloy steels for rings and rolling elements. The specific steel grade depends on the bearing series and intended application. Some bearings may have special coatings or corrosion-resistant materials for specific environments. Standard cages are often made of steel or brass, with polyamide cages available for certain sizes. For exact material specifications, refer to the FAG catalog or contact 3G Electric with the specific model number.

FAG cylindrical roller bearings can operate at elevated temperatures, but the permissible range depends on the bearing material, cage type, lubricant, and heat treatment. Standard bearings with alloy steel rings and steel cages may be suitable for operating temperatures up to approximately 120°C to 150°C, depending on lubrication. For higher temperatures, special heat-stabilized bearings and high-temperature lubricants are required. Always verify the temperature limits for the specific bearing and application conditions. 3G Electric can provide details on available options.

Lead time for FAG bearings from 3G Electric depends on the specific model, quantity, and current stock levels. Commonly requested sizes may be available from stock, while others may require factory order. 3G Electric provides logistics support and can advise on estimated delivery times at the time of quotation. For urgent requirements, expedited shipping options may be available. Contact 3G Electric with the bearing model number and quantity to receive a quote and lead time estimate.