NTN SESF203 flange bearing 4 holes

NTN SESF203 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 SESF203 and any equivalents.

The NTN SESF series is a flanged Y-bearing insert unit that mounts with four bolts. It holds a rotating shaft against a flat surface and carries radial loads, with alignment that is easy to set. You use it when a shaft needs solid support and you want to avoid machining a housing. MR Industrial Accessories supplies this NTN line to customers in the United States and Latin America, and quotes by part number through WhatsApp or email.

Reading the code helps you pick the right unit. The letters tell you what kind of unit it is: a flanged housing with an insert bearing. The number after the letters points to the shaft size and the assembly dimensions. That is why SESF201, SESF202 and SESF205 all exist, each for a larger diameter. A hyphenated ending, such as SESF204-12 or SESF205-16, marks a shaft variant inside the same family. Give us the complete part number and we will quote that unit.

You will see these units on conveyors, belts, elevators, mixers, blowers and packaging lines, wherever a drive shaft needs a four-point flanged support. They are common in food processing, cement, aggregates, chemical and water treatment plants because they mount easily on sheet metal or structural steel. They also show up in material handling equipment and agricultural machinery, provided the load is radial and the speed is moderate.

Selection comes down to three things: shaft diameter, insert locking type (set screw or eccentric) and sealing. In dusty or wet areas, choose an insert with a contact seal. During installation, set the flange on a flat, clean surface, tighten the four bolts in a cross pattern, and confirm the shaft turns freely. Lubricating the insert and keeping the shaft aligned with the flange both affect how long the unit lasts. If the equipment vibrates, check bolt tightness and seal condition first.

Flanged units with insert bearings interchange between brands by shaft number and hole pattern, not by the full part number. An NTN SESF205 can be replaced by an equivalent unit from another brand when shaft diameter, hole spacing and insert type line up. If you have the original part or a part number from another brand, send that information and we will point you to the compatible alternative. You do not need to guess the reference; the size is enough.

If you already know the part number or shaft size, message us on WhatsApp or email and we will quote the NTN SESF series unit promptly. MR Industrial Accessories also helps you choose sealing and mounting based on your equipment's environment. Send the part number, the size or a photo of the part and we will take it from there.