Single 1-1/2 in Heavy Duty Set-Screw 4-Bolt Flange Ball Bearing Unit UC308-24 for Conveyor and Shaft Mounts, Wide Inner Ring, Cast Iron F308 Housing, 5/8 in Bolt Pattern, Contact Seal, Grease Fitting

Single 1-1/2 in heavy-duty set-screw flange bearing
✔️ UC308-24, 1.5 in (38.1 mm) ID, wide inner ring, set-screw

This is a single heavy-duty 4-bolt flange ball bearing unit used for conveyor drives, agricultural shafts, and industrial mounts where a sealed ball bearing or pillow block alternative is needed. Ideal for replacing worn linear slide unit bearings in harsh environments.

✅ Model: UC308-24, 4-bolt flange unit (F308), cast iron housing
✅ Insert type: ball bearing with set-screw locking; wide inner ring for heavy radial loads
✅ I.D.: 1.5 in (38.1 mm); bolt size: 5/8 in (15.88 mm); 4-bolt pattern
✅ Seal: contact seal with slinger; relubrication via 1/8-27 NPT grease fitting
✅ Temperature rating: up to 212 F (100 C); duty: heavy; housing: cast iron
✅ Weight: 6.28 lb (2.85 kg); common retrofit for conveyor systems and shaft mounts

💡 What is a 4-bolt flange bearing used for in industrial applications? A quick, technical overview to help pick the right mounting style. - Provides secure radial support for fixed shafts where flange mounting keeps alignment tight. - Handy choice for conveyors, agricultural equipment, drive shafts, and linear slide unit installs. - Use sealed ball bearing inserts to resist contamination; consider ceramic balls for high-temp or low-friction needs. - Works well as a pillow block alternative when space or alignment demands a flange mount.