UCCJO309-28 1-3/4 in Set-Screw Lock 4-Bolt Flange Mounted Unit, Cast Iron CJO309 Housing, Heavy-Duty Sealed Ball Insert with Wide Inner Ring and 1/8-27 NPT Grease Fitting

1-3/4 in 4-Bolt Flange Set-Screw Bearing Unit
✔️ Cast iron CJO309 housing, sealed ball insert, 1-3/4 in ID

This is a single 4-bolt flange mounted bearing unit with a set-screw lock, built for general-purpose industrial and agricultural shaft support where quick mounting and relubrication are needed.

✅ Model: UCCJO309-28 single unit, UC309-28 insert
✅ Inner diameter: 1 3/4 in, wide inner ring for shaft stability
✅ Housing: cast iron CJO309, 4-bolt flange style for panel mounting
✅ Insert type: sealed ball bearing, bearing steel inner ring
✅ Locking: set-screw lock on inner ring for easy installation
✅ Lubrication: grease fitting tap 1/8-27 NPT, relubrication allowed
✅ Sealing: contact seal with slinger for contamination protection
✅ Duty & temp: heavy-duty rating, operating to 212 F, bolt size 9/16 in

💡 What is a 4-bolt flange sealed ball bearing unit used for? A sealed 4-bolt flange bearing unit supports rotating shafts in conveyors, fans, pumps, and light industrial machinery and is handy for fast replacement or retrofit jobs. Quick overview: - Provides radial shaft support with a sealed ball bearing insert for contamination resistance and long life. - Mounts easily to frames or housings using the 4-bolt flange and secures to the shaft with a set-screw lock. - Accepts grease via a 1/8-27 NPT fitting for routine relubrication and works well in linear slide unit and conveyor applications.