
NSK UKFCX18D1;HA2318X flange bearing 4 holes
- Brand
- NSK
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
- Series
- UKFCX
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Description
NSK UKFCX18D1;HA2318X 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 UKFCX18D1;HA2318X and any equivalents.
This flange-mounted unit pairs a cast iron housing with a spherical roller insert bearing that sits in a tapered bore. Four bolts hold it to a flat surface, so the shaft can be lined up without special tools. It suits drives that see moderate loads and some shaft misalignment.
The code tells you what you are holding. UK means the insert has a tapered bore and takes an adapter sleeve. FC is the four-bolt flange housing pattern. X marks a heavier section. The digits after the letters give the shaft size, and D1 covers sealing or fastening details. So a UKFCX17D1 goes with sleeve HA2317X, and a UKFCX18D1 with HA2318X. Order the sleeve on its own line, sized to the shaft.
You will see these units on belt conveyors, bucket elevators, mixers, mills and process lines in food, chemical and aggregate operations. Flange mounting helps where a wall or frame needs a firm fixing point with room to service the bearing. Fans and mid-size centrifugal pumps are other common homes.
Selection starts with shaft diameter, then the matching HA sleeve. Because the insert bore is tapered, the sleeve and a lock nut set the fit. Check that the flange sits square to the shaft, and grease the bearing for the actual duty. The insert seal keeps out dust and moisture; add extra sealing where conditions are harsh. The spherical roller bearing itself absorbs a degree of misalignment.
For equivalents, remember that each maker has its own naming for housed insert bearings. The NSK UKFCX line can cross to similar series from other suppliers, but confirm flange dimensions, shaft diameter and sleeve type first. Series do not always swap. When replacing an existing unit, compare drawings or send the full code and we will point to a compatible option.
To get a quote on a UKFCX housing or its HA sleeve, message us on WhatsApp with the code or shaft size. We work from the exact code and can advise on installation. If the part is unmarked, send a photo or the main dimensions and we will identify the model that fits.
Dimensions
- Bore
- 3 3/16 in
Frequently asked questions
- What does UKFCX stand for on this housing?
- UK is the insert bearing with tapered bore and adapter sleeve. FC is the four-bolt flange housing. X is a reinforced section. The number is the shaft diameter, and D1 covers sealing or fastening variants.
- Which sleeve fits a UKFCX17D1 housing?
- Use sleeve HA2317X with the UKFCX17D1. The sleeve is ordered separately and must match the shaft diameter. Other sizes in the series take a different HA sleeve.
- How do I ask for a quote on a UKFCX housing?
- Send the full code or the shaft size on WhatsApp. We quote the exact code and confirm the compatible HA sleeve. If the part is unidentified, share the main dimensions.

