UKF218+HS2318 4-Bolt Flange Sealed Ball Bearing Single Unit, 3-1/8 in I.D., Wide Inner Ring, 7/8 in Bolt Size, Concentric Adapter, Cast Iron F218 Housing, Contact Seal with Slinger, 1/8-27 NPT

Single sealed ball bearing 4-bolt flange, 3-1/8 in I.D.
✔️ Concentric adapter, cast iron F218 housing, 7/8 in bolts, relube ready

This single sealed ball bearing assembly (UKF218+HS2318) is a 4-bolt flange unit used in industrial equipment like conveyors, reducers, drives and linear slide units where a concentric adapter and sealed protection are needed.

✅ Model: UKF218+HS2318 - 4-bolt flange type
✅ I.D.: 3-1/8 in (inner diameter), wide inner ring
✅ Bolt size: 7/8 in, housing style F218, cast iron housing
✅ Insert: bearing steel, ball bearing insert, concentric adapter locking
✅ Seal: contact seal with slinger, relubricatable, lubrication tap 1/8-27 NPT
✅ Temperature rating: up to 212°F, duty: standard, covers: no expansion required

💡 What is a 4-bolt flange sealed ball bearing used for in conveyor and linear slide unit installations? A sealed ball bearing flange unit gives reliable shaft support and helps keep contaminants out. - Provides secure flange mounting and stable radial support for shafts on conveyors, reducers, and linear slide units. - Concentric adapter simplifies installation and ensures tight locking of the inner ring for accurate alignment. - Contact seal with slinger plus a 1/8-27 NPT relube port helps retain grease and reduce maintenance intervals. - Ideal as a low-maintenance, handy replacement for pillow blocks or housed bearing units needing sealed protection.