UC 218 Insert Bearing Dimensions & Housing Specs

The UC 218 insert bearing is a heavy-duty rolling-element insert engineered with a 90 mm bore diameter, a 160 mm outside diameter, and a total width of 96 mm. Standardized under the UC 200 series classification, this wide-inner-ring insert relies on twin set screws for shaft attachment and a spherical outer ring to accommodate initial mounting alignment.

In industrial machinery across Indonesia - from conveyor drives in Cikarang industrial estates to processing facilities in Surabaya and workshop machinery in Glodok - ordering large insert bearings by exact part specifications ensures seamless fitment. However, selecting an insert bearing based solely on series designation can lead to fitting errors if housing geometry or shaft tolerances are overlooked. HI-TEC supplies verified UC 218 insert bearings designed for quiet, reliable performance across demanding industrial environments.

What are the exact dimensions of a UC 218 insert bearing?

The HI-TEC UC 218 insert bearing features a 90 mm bore diameter, a 160 mm outside diameter, and an overall width of 96 mm. It belongs to the UC 200 series standard-duty classification and is manufactured under the HI-TEC brand to serve high-load industrial machinery.

Understanding the precise physical specifications of the HI-TEC UC 218 insert bearing is essential when replacing worn components or designing new shaft assemblies. Featuring a spherical outer ring face, the UC 218 insert self-aligns within a compatible housing seat to compensate for minor shaft deflection^[1]. The extended inner ring provides full shaft engagement, utilizing two radial set screws spaced 120 degrees apart to lock firmly onto a 90 mm turned shaft^[1][2]. Dual contact lip seals with protective metal flingers prevent dust, slurry, and moisture ingress while retaining factory grease in harsh operating environments^[1].

When evaluating an insert ball bearing, technicians must confirm that all three principal dimensions - bore, outer diameter, and width - match the machinery configuration. The 96 mm total width ensures proper load distribution across the 90 mm shaft seat without introducing axial binding.

Parts in this article

Which housing units fit the UC 218, and how do you order the correct variant?

The UC 218 insert bearing is engineered to fit matching 218-size housing units, including the UCP 218 pillow block, UCF 218 four-bolt square flange, and UCFL 218 two-bolt oval flange^[1]. Bearing selection requires verifying exact shaft dimensions and housing mounting structures rather than assuming all series variants or housing styles are universally interchangeable^[1].

Selecting the proper mounted unit depends on shaft orientation, frame mounting space, and structural load requirements: 1. UCP 218 Pillow Block Units: Positioned on horizontal structural bases, such as heavy conveyor drive shafts in Jakarta factories or mining equipment in Balikpapan^[1][3]. The housing provides a rigid two-bolt foot mount with a 101.6 mm shaft centre height^[1][3]. Reviewing a pillow block bearing housing selection guide helps confirm base-to-centre dimensions. 2. UCF 218 Four-Bolt Square Flange Units: Mounted vertically against sidewalls or machine frames, utilizing four mounting bolts to handle combined radial and thrust loads^[1]. 3. UCFL 218 Two-Bolt Oval Flange Units: Used in space-constrained side-wall mountings where two bolt holes are preferred over a four-bolt layout^[1]. Buyers can compare options in our guide to bearing housing types.

A common perception among maintenance teams is that any 90 mm insert bearing can swap into any 218 housing. However, housing seats vary between duty series (such as medium-duty UC 318 options), and selecting the wrong locking style can result in shaft slippage^[1]. Understanding your shaft's insert bearing locking mechanism ensures secure torque transfer. HI-TEC provides instant part verification, pricing, and availability for UC 218 insert bearings via WhatsApp at +62 823-1004-6527.

Frequently Asked Questions

What are the exact dimensions of a UC 218 insert bearing?

The UC 218 insert bearing features a 90 mm bore diameter, a 160 mm outside diameter, and an overall width of 96 mm. It belongs to the UC 200 standard-duty series under the HI-TEC brand.

Which housing units are compatible with a UC 218 insert bearing?

The UC 218 insert bearing fits matching 218-series housings, including UCP 218 pillow blocks, UCF 218 four-bolt square flanges, and UCFL 218 two-bolt oval flanges^[1]. All compatible housing units feature a 160 mm spherical seat to accept the UC 218 outer ring^[1].

Can I swap any UC series bearing based on size alone?

No, you should not swap UC series bearings based on size alone. Shaft diameter, outer ring curvature, inner ring width, and locking mechanism style must all be matched to avoid shaft slippage or housing binding^[1].

How do I check pricing and availability for HI-TEC UC 218 bearings in Indonesia?

You can check current pricing and stock availability directly with HI-TEC ASIA by contacting our customer support team on WhatsApp at +62 823-1004-6527. Our bearing specialists assist technicians and procurement teams across Indonesia with quick part identification and nationwide dispatch.

References

1. Radial insert ball bearing - UC218 - Schaeffler medias. https://medias.schaeffler.us/en/product/rotary/rolling-and-plain-bearings/ball-bearings/insert-ball-bearings-and-belt-tension-pulleys/insert-ball-bearings/uc218/p/358726 (2026-10-06)
2. Set Screw Locking Bearing Insert, UC200/UCW200 Series. https://catalog.amibearings.com/item/spherical-o-d-normal-duty-set-screw-bearing-insert/t-screw-locking-bearing-insert-uc200-ucw200-series/uc218 (2026-09-10)
3. UCP 218 - Ball bearing units | SKF. https://www.skf.com/group/products/mounted-bearings/ball-bearing-units/pillow-block-ball-bearing-units/productid-UCP%20218 (2026-10-22)