NAFL, NAFLU & UKFL-H Oval Flange Units

In a replacement search, this series makes sense when the existing assembly relies on a narrow two-bolt flange must be retained while the shaft connection follows an eccentric-collar or adapter-sleeve standard. In the supplied catalog, NAFL / NAFLU / UKFL-H is shown as two-bolt oval flange units with eccentric-collar and tapered-bore alternatives and two-bolt oval flange. For NAFL / NAFLU / UKFL-H, quotation work moves faster when the source designation, shaft or bore dimension and the controlling mounting measurements are checked before optional seal, grease or housing requests are discussed.

Product Role

The practical role is straightforward, but the interfaces are not interchangeable: the shaft and the machine frame each have their own constraints. With NAFL / NAFLU / UKFL-H, matching the bore without checking two-bolt oval flange can produce a part that fits the shaft but not the machine.

Construction & Fit

The source page is the safest construction reference because it preserves the exact series proportions and designation logic. For NAFL / NAFLU / UKFL-H, that chain includes eccentric-collar and tapered-bore alternatives at the shaft and two-bolt oval flange at the machine. For NAFL / NAFLU / UKFL-H, small assembly-angle tolerance does not remove the need for a straight shaft, a stable mounting face and aligned neighboring supports.

Applications

The family is applicable to compact machine walls, conveyor frames, agricultural equipment and replacement locations where the original locking method must be preserved. Where NAFL / NAFLU / UKFL-H operates outdoors or around process debris, inspection access can be as important as nominal bore size.

Engineering Review

NAFL, NAFLU and UKFL-H retain the compact two-bolt oval mounting concept while changing the way the bearing is retained on the shaft. That difference is easy to miss when the installed unit is partly hidden behind a plate. Photograph the shaft ends and locking components before disassembly, then measure the flange pattern and projection. A full mechanical record prevents a collar-type or adapter-type unit from being mistaken for a set-screw version.

If a change of locking method is being considered, review the available axial space as carefully as the bolt pattern. Adapter hardware or eccentric collars may need room that the existing machine does not provide. The correct question is not 'Will it fit the two holes?' but whether the entire shaft, bearing and flange arrangement can be assembled, locked, guarded and later removed without reworking the frame.

For NAFL, NAFLU and UKFL-H, make the locking method visible before the old unit leaves the machine. Once parts are mixed on a workbench, similar oval housings can be difficult to distinguish. Tag the housing, insert and collar or sleeve as one set during inspection. This simple practice preserves the evidence needed to compare the correct catalog family and avoids creating a false interchange from loose components.

A useful comparison for oval-flange alternatives is the distance from the mounting plate to the outer end of the locking hardware. That projection can decide whether a collar or sleeve arrangement clears an adjacent guard. Measure it on the existing assembly and preserve the value with the NAFL, NAFLU or UKFL-H identification record.

Technical Specifications

Dimensional Data

Core NAFL / NAFLU / UKFL-H dimensions are transcribed below for faster comparison. Do not treat the reduced NAFL / NAFLU / UKFL-H table as a replacement for the source drawing; use the gallery specification image to verify the final model and any omitted columns.

Selection Notes

The replacement path is shortest when bore, mounting pattern and shaft-center location are captured together. A NAFL / NAFLU / UKFL-H replacement needs the actual shaft measurement, the controlling two-bolt oval flange dimensions and confirmation of eccentric-collar and tapered-bore alternatives. If inch and metric possibilities for NAFL / NAFLU / UKFL-H are close, send the measured value rather than a converted or remembered nominal size.

Mounting & Integration

Compare the side-view dimension before ordering, mount the flange to a flat face, establish shaft position, and then complete the eccentric-collar or adapter-sleeve operation for the exact series. The main installation hazard for NAFL / NAFLU / UKFL-H is that changing locking style without checking overall bearing width can create interference with guards, spacers or adjacent shoulders even when the flange holes line up. Finish the NAFL / NAFLU / UKFL-H installation by checking free rotation, locking-tool clearance and access to any service point before guards are refitted.

Maintenance & Inspection

Inspect shaft-lock security and flange-face contact together; repeated collar movement or sleeve settling may indicate an underlying fit or alignment problem. Use the condition history of NAFL / NAFLU / UKFL-H to guide service rather than applying one grease interval to every shaft location on the machine.

Customization & RFQ

A useful NAFL / NAFLU / UKFL-H RFQ starts with identification data: series code, shaft measurement, mounting geometry and clear application photographs. If NAFL / NAFLU / UKFL-H works in dirty or wet service, send that information with the mechanical dimensions so optional protection can be evaluated against a real duty. Ever Power Netherlands Branch can then review options for NAFL / NAFLU / UKFL-H against the supplied application instead of presenting unverified material, seal or grease claims as standard catalog facts.

Cataloged Models

The source catalog groups the following under this page: NAFL eccentric locking collar type; NAFLU eccentric locking collar type; UKFL-H tapered bore / adapter type. Do not collapse these NAFL / NAFLU / UKFL-H variants into one generic SKU during replacement work; the detailed designation carries interchange information.

Product FAQ

Evidence Note

Technical evidence for NAFL / NAFLU / UKFL-H comes from the supplied scanned catalog, including its series drawing and model table. The gallery drawing for NAFL / NAFLU / UKFL-H is a direct catalog crop, not an AI-generated technical illustration. Any application visualization added later for NAFL / NAFLU / UKFL-H should be treated as illustrative rather than as dimensional evidence.

Product facts for NAFL / NAFLU / UKFL-H stay tied to PDF pages 30-32; when the scan does not support a specification, the enquiry asks for confirmation instead of borrowing a number from another manufacturer's table.