2-7/16 in 4-Bolt Flange Set Screw Sealed Ball Bearing UCF213-39, Medium Duty Unit with Cast Iron Housing, Bearing-Steel Insert, Contact Seal with Slinger, Relubricatable, Single (1 Each)

2-7/16 in sealed 4-bolt flange set-screw ball bearing
✔️ ID 2-7/16 in, cast iron housing, set-screw locking, single unit

This single sealed 4-bolt flange ball bearing unit is built for medium-duty shaft support and straightforward mounting in conveyors, fans, agricultural gear, and light industrial equipment.

✅ Model: UCF213-39 (single unit)
✅ Insert type: sealed ball bearing, bearing-steel insert
✅ Inner diameter: 2-7/16 in
✅ Housing: cast iron, 4-bolt flange style
✅ Locking method: set-screw insert
✅ Seal: contact seal with slinger for dust exclusion
✅ Relubrication: yes, greaseable
✅ Max temp: Standard up to 212°F, no high-temp expansion
✅ HTS code: 8483.20.40.40; weight ~11.54 lb each

💡 What is a 4-bolt flange bearing used for in industrial shaft support? A 4-bolt flange bearing provides rigid mounting and reliable alignment for rotating shafts, making it handy for attaching sealed ball bearing units to frames and gearboxes. Quick use cases: - Heavy-duty conveyor and gearbox shafts, where sealed ball bearing units help resist contamination - HVAC fans, pumps, and agricultural machinery; pairs well with linear slide unit setups - Systems that may opt for ceramic ball bearings for corrosion resistance or high-speed operation