NAF, NAFU, UKF-H & SAF-G Square Flange Units

This family belongs on the shortlist when the support point calls for the same square-flange mounting concept is needed but the shaft-locking method must differ from a standard set-screw UCF. In the supplied catalog, NAF / NAFU / UKF-H / SAF-G is shown as square flange bearing units with eccentric-collar and tapered-bore alternatives and four-bolt square flange. For NAF / NAFU / UKF-H / SAF-G, 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 catalog drawing describes more than a bearing: it defines how the rotating shaft is tied to the fixed structure. For this NAF / NAFU / UKF-H / SAF-G family, the drawing should be treated as the interchange reference because the four-bolt square flange governs where the shaft centerline actually sits.

Construction & Fit

The catalog organizes this product as a complete support form with its own locking and installation geometry. For NAF / NAFU / UKF-H / SAF-G, that chain includes eccentric-collar and tapered-bore alternatives at the shaft and four-bolt square flange at the machine. Any limited alignment capability around NAF / NAFU / UKF-H / SAF-G belongs to assembly tolerance; persistent offset or frame distortion must be corrected at the machine structure.

Applications

The application range can include plate-mounted conveyors, processing machines, agricultural equipment and replacement projects with eccentric-collar or adapter-sleeve standards. For NAF / NAFU / UKF-H / SAF-G, dirty or wet service should be stated explicitly so sealing and relubrication can be reviewed instead of assumed from the base code.

Engineering Review

NAF, NAFU, UKF-H and SAF-G square flange groups illustrate why the outer housing shape alone does not define interchange. The square bolt pattern may be familiar, yet the shaft-locking method and insert geometry can differ materially between the cataloged versions. Capture both sides of the installed unit so the collar, sleeve or set-screw arrangement is visible alongside the flange measurements.

When converting between these families, treat the exercise as a reviewed redesign. Available axial space, shaft preparation, locking-tool access and the position of nearby hubs can all change. If a four-bolt pattern matches but the shaft interface does not, the part is not a drop-in replacement. A useful RFQ therefore pairs the flange dimensions with a description of how the current unit is locked to the shaft.

For the alternative square-flange families, place the locking hardware in the same photograph as the bolt pattern whenever possible. That single view connects machine-side geometry with shaft-side identification. If the lock is hidden, take a second image along the shaft and label the direction of rotation. These photos make it much harder to accidentally cross a set-screw, eccentric-collar and adapter-sleeve arrangement during purchasing.

For NAF, NAFU, UKF-H or SAF-G, place a label in each photo naming the observed locking method. This sounds basic, but flange housings are visually similar when photographed from the front. A labeled shaft-side image prevents the purchasing record from losing the very feature that distinguishes these catalog families after the old unit is discarded.

Technical Specifications

Dimensional Data

For NAF / NAFU / UKF-H / SAF-G, the transcribed values below are limited to dimensions that could be read confidently from the supplied catalog. Confirm the full NAF / NAFU / UKF-H / SAF-G row against the accompanying specification image before a production order.

Selection Notes

The selection can be narrowed quickly once shaft size and mounting geometry are known. The NAF / NAFU / UKF-H / SAF-G selection record should include shaft size, the machine-side four-bolt square flange dimensions, and the exact eccentric-collar and tapered-bore alternatives arrangement. For NAF / NAFU / UKF-H / SAF-G, also note rotational speed, radial or axial load direction, washdown and temperature because those conditions affect the final review.

Mounting & Integration

Match the complete series, verify the flange drawing and shaft interface, mount the housing without plate distortion, and complete the collar or adapter operation only after alignment. The main installation hazard for NAF / NAFU / UKF-H / SAF-G is that bolt pattern similarity does not guarantee insert interchangeability; the locking method changes the bearing width, shaft preparation and service procedure. After the NAF / NAFU / UKF-H / SAF-G fasteners are secured, turn the shaft by hand where safe and look for contact with shoulders, guards or neighboring hardware.

Maintenance & Inspection

Inspect the lock mechanism specific to the selected series and keep the flange face tight against the machine plate; any rocking at the housing should be corrected at the mounting surface. When inspecting NAF / NAFU / UKF-H / SAF-G, look beyond the bearing itself: nearby debris, frame movement and misalignment can produce the same symptoms as internal damage.

Customization & RFQ

For a NAF / NAFU / UKF-H / SAF-G replacement enquiry, send the complete code if it is readable, plus shaft size and the mounting dimensions that position the unit. The surroundings of NAF / NAFU / UKF-H / SAF-G matter: note outdoor exposure, washdown, abrasive material, corrosion risk and any unusual heat or cold. Ever Power Netherlands Branch can then review options for NAF / NAFU / UKF-H / SAF-G against the supplied application instead of presenting unverified material, seal or grease claims as standard catalog facts.

Cataloged Models

The documented scope on this page includes NAF eccentric locking collar type; NAFU eccentric locking collar type; UKF-H tapered bore / adapter type; SAF-G eccentric locking collar type. Keep the complete NAF / NAFU / UKF-H / SAF-G suffix or bore variant when matching existing equipment because a shortened code can hide a different locking or dimensional arrangement.

Product FAQ

Evidence Note

This NAF / NAFU / UKF-H / SAF-G record uses the supplied PDF as its specification source; where a value is not clear in that scan, the page asks for confirmation instead of filling the gap from a generic table. The gallery drawing for NAF / NAFU / UKF-H / SAF-G is a direct catalog crop, not an AI-generated technical illustration. Any application visualization added later for NAF / NAFU / UKF-H / SAF-G should be treated as illustrative rather than as dimensional evidence.

Evidence chain for NAF / NAFU / UKF-H / SAF-G: the user catalog on PDF pages 26-28 supports product geometry and dimensions, while the project Word file provides page organization. Drive and web sources are supplementary context only.