UC321 105mm single heavy-duty wide inner-ring insert with set-screw lock, ball bearing, spherical outer ring, contact seal with slinger, sealed for pillow block and linear slides

Single 105mm UC321 wide inner-ring bearing for pillow blocks
✔️ Heavy-duty set-screw lock insert, contact seal, relube port

This single UC321 105mm insert ball bearing is a heavy-duty sealed unit used in pillow block housings and linear slide units for industrial machines, conveyors, and motor mounts. It’s built for applications needing a set-screw lock and relubrication access.

✅ Model: UC321 single insert, general purpose
✅ I.D.: 105 mm
✅ Inner ring width: Wide
✅ Insert type/material: Ball bearing, bearing steel
✅ Locking: Set-screw locking design
✅ O.D. style: Spherical outer ring
✅ Seal: Contact seal with slinger, sealed ball bearing
✅ Relubrication: Yes, grease port available
✅ Dynamic load rating: 18700 kgf
✅ Static load rating: 15600 kgf
✅ High temp rating: 212 F

💡 What is a pillow block bearing insert used for in industrial equipment?

A pillow block bearing insert supports a rotating shaft inside a mounted housing, reducing friction and allowing quick replacement when worn. This short intro explains common uses and benefits: - Supports radial and moderate axial loads in conveyor, motor, and gearbox mounts - Fits pillow block housings and linear slide units for fast swap maintenance and reduced downtime - Sealed ball bearing inserts protect against contamination while allowing relubrication for long service life - Handy choice when you need a heavy-duty, set-screw locked insert for industrial applications