NSK UELFL321D1W3 flange bearing 4 holes

NSK UELFL321D1W3 belongs to flange bearing 4 holes, part of our Bearing housings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for UELFL321D1W3 and any equivalents.

The NSK UELFL series is a 4-bolt flange mounted bearing unit that combines a cast iron housing with a UEL insert bearing. The insert is secured to the shaft with set screws and can self-align, making the unit suitable for equipment where perfect alignment is difficult to maintain. MR Industrial Accessories LLC supplies these units to customers across the United States and in several Latin American countries. To request a quote, send the complete part number via WhatsApp or email.

Reading the UELFL code helps you specify the right unit. UEL identifies the insert bearing: it has set screws and a wider inner ring. FL denotes the 4-bolt flange housing. The number that follows indicates the diameter series. Suffixes then clarify variants: D1 is the reinforced seal, W3 is a grease configuration, and a hyphenated number such as -012 or -013 gives the shaft diameter in inches. For example, UELFL204-012D1W3 is a complete code. Codes without a hyphen, such as UELFL204D1W3, correspond to metric sizes or to the base designation.

These flange units are commonly found on belt conveyors, screens, bucket elevators, mixers and process equipment. In food, cement, mining and agricultural plants, dust and humidity are constant concerns, so the sealing variant matters. The 4-bolt flange mounts firmly to sheet metal or structural frames, and the self-aligning insert compensates for small shaft misalignments.

When selecting a unit, check the shaft diameter, the locking method (set screws or eccentric) and the seal. The D1 suffix provides better grease retention and helps exclude contaminants. During installation, set the flange on a flat surface, tighten the bolts in a cross pattern, and confirm the shaft turns freely. Lubricate according to the working environment and periodically check the set screws to prevent the insert from slipping on the shaft.

If you are working with a code from another brand, we can cross-reference it. 4-bolt flange housings with UEL inserts follow standardized dimensions, so interchangeability is often direct. Send us the complete code or the shaft dimensions and bolt hole spacing, and we will identify the compatible equivalent. The brand does not need to match for the replacement to work.

To get a quote, send the exact part number by WhatsApp or email. If you do not have it, provide the shaft diameter and the bolt hole spacing of the flange, and we will help you identify the right unit.