UCFEU307-20 single 1-1/4 in set-screw expansion ball bearing, heavy-duty 4-bolt flange, cast iron housing, wide inner ring, contact sealed, relubrication 1/8-27 NPT port

Single 1-1/4 in set-screw expansion ball bearing, 4-bolt
✔️ Cast-iron 4-bolt flange, 1/2 in bolts, contact seal, relube

This is a single mounted 4-bolt flange ball bearing with an expanding set-screw insert. Commonly used on conveyors, fans, pumps, and linear slide unit setups where a sealed ball bearing is needed for heavy-duty industrial service.

✅ Model: UCFEU307-20 (single bearing unit)
✅ Inner diameter: 1 1/4 in (1.25 in)
✅ Insert type: single-row ball bearing, wide inner ring
✅ Housing: cast iron, FE-U307 style, 4-bolt flange
✅ Bolt size: 1/2 in; mounting for heavy duty applications
✅ Locking: set screw expanding insert for secure fit
✅ Seals: contact seal with slinger for protection
✅ Lubrication: 1/8-27 NPT fitting tap, relubrication allowed
✅ Temp rating: up to 212 F; HTS code 8483.20.40.40

💡 What is a 4-bolt flange mounted sealed ball bearing used for? A 4-bolt flange mounted sealed ball bearing is a handy component for machines that need reliable radial support and easy mounting. It keeps shafts aligned and protected against contaminants while allowing relubrication when needed. - Used on conveyors, fans, pumps, agricultural gearboxes and material handling equipment - Ideal when a sealed ball bearing is required for dust, splash, or moderate contamination environments - Works well with linear slide unit applications and pillow block style arrangements for shaft support