NTN SESPA206-18 flange bearing 2 holes
- Brand
- NTN
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
- Series
- SESPA
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Description
NTN SESPA206-18 belongs to flange bearing 2 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 SESPA206-18 and any equivalents.
The NTN SESPA series covers 2-bolt flange mounted bearing units that hold a rotating shaft against a flat surface. The insert sits in a spherical seat, so it self-aligns and tolerates minor mounting error while carrying radial loads and some axial thrust. These units fit light and medium transmission duties where installation has to be fast and the footprint small.
Reading the code helps you order the right size. SESPA tells you it is a flange housing with an insert bearing: the letters describe the housing style and the locking method, and the digits after them give the insert and shaft size. SESPA201 takes a 12 mm shaft, SESPA202 a 15 mm shaft, SESPA203 a 17 mm shaft, SESPA204 a 20 mm shaft and SESPA205 a 25 mm shaft. A hyphenated suffix marks the inch variants, such as SESPA204-12 or SESPA205-16.
You will find these units across packaging and material handling lines, farm equipment, bakery machinery, industrial laundry rooms and ventilation systems. Two bolts fix the flange to folded sheet metal, structural profiles or concrete beds. The spherical seat of the insert absorbs small misalignments, which suits moderate shaft speeds and loads that stay within normal limits, and it keeps installation quick and economical.
Selection comes down to shaft diameter, the load case (radial, axial or combined) and where the unit has to work. The insert seal keeps dust and moisture out; for washdown areas or fine particles, pick a version with an extra seal. Grease from the factory normally lasts the full service life, though heavy duty positions can be relubricated. Bolt it to a clean, flat surface and tighten the screws evenly so the housing is not distorted. Align it as well as you can at the start; the spherical seat takes care of the rest.
Interchange is possible in many cases because Y-bearing units from different makers often share standardized dimensions, provided shaft diameter and flange dimensions line up. It is not automatic, though, so check the mounting dimensions and the locking style of the insert before substituting. Send us a competitor's part number or a photo of an unmarked unit and we will identify the matching option or quote the exact size.
To get a quote, message us on WhatsApp with the SESPA number and size you need, or simply the shaft diameter and a photo of the unit. We reply quickly and help you settle on the version that fits your equipment.
Dimensions
- Bore
- 1-1/8 in
Frequently asked questions
- What does SESPA mean on an NTN unit?
- It denotes a 2-bolt flange unit with an insert bearing. The letters cover the housing type and locking, and the following digits set the shaft size, so SESPA204 is built for a 20 mm shaft.
- When should I pick a SESPA unit over another housing style?
- The SESPA bolts down to a flat surface through two holes. Shaft-mounted or take-up frames call for other series. Load and environment matter too, and we can advise on your specific case.
- Can SESPA units replace other brands?
- Y-bearing units generally follow standardized dimensions, but you should confirm shaft diameter and flange dimensions before swapping. Send us the other brand's part number and we will confirm the equivalent.