Single Unit UKF311 HE2311 Wide Adapter 2 in ID 4-Bolt Flange Concentric Lock Ball Bearing Insert Heavy Duty Cast Iron F311 Housing Sealed Contact with Slinger 1/8-27 NPT Relubrication

Single 2 in wide adapter bearing unit, cast iron
✔️ 2 in (50.8 mm) ID, wide inner ring, 4-bolt F311 flange, 3/4 in bolts

This single unit sealed ball bearing adapter (model UKF311+HE2311) is a heavy-duty 4-bolt flange insert used to support shafts in conveyors, agricultural gear, and industrial drive systems. It features a concentric locking adapter and relubrication access for easier maintenance.

✅ Model: UKF311+HE2311, insert UK311+HE2311 (single unit)
✅ Inner diameter: 2 in (50.8 mm); wide inner ring width
✅ Bolt size: 3/4 in (19.05 mm), 4-bolt flange F311
✅ Housing: Cast iron, F311 style; duty: Heavy
✅ Insert type: Ball bearing, material bearing steel; concentric adapter lock
✅ Seals: Contact seal with slinger; relubrication via 1/8-27 NPT (1/8 in / 3.175 mm)
✅ Max temp: 212 F (100 C); HTS code: 8483.20.40.40
✅ No covers included; contact tech support 800 882 8642 for help

💡 What is a 4-bolt flange sealed ball bearing unit used for in industrial equipment? A 4-bolt flange sealed ball bearing unit is a handy shaft support that simplifies mounting, shields the bearing from contaminants, and allows periodic relubrication. - Ideal for conveyor idlers, pump and fan drives, and agricultural machinery needing sealed ball bearing protection - Concentric adapter inserts make mounting quick and relubrication via 1/8-27 NPT straightforward to extend service life - Cast iron F311 flange housing provides rigid support for wide inner ring shafts (2 in / 50.8 mm)