UCAO309-28 1-3/4 in Heavy Duty Set-Screw Pillow Block Bearing, Sealed Ball Insert 1.75in I.D. (44.45 mm), Cast Iron AO309 Housing, 5/8in Bolt, Relubricatable, Wide Inner Ring, 1/8-27 NPT Fitting

Single 1-3/4 in set-screw pillow block bearing
✔️ ID 1.75 in (44.45 mm), 5/8 in (15.88 mm) bolt, AO309 housing

This single pillow block houses a sealed ball bearing insert (UC309-28) in a cast iron AO309 housing, designed for heavy duty mounting on conveyors, shafts, and linear slide units.

✅ Model: UCAO309-28 (UC309-28) insert
✅ Application: General purpose pillow block
✅ Insert type: Sealed ball insert, bearing steel
✅ I.D.: 1.75 in (44.45 mm)
✅ Bolt size: 5/8 in (15.88 mm)
✅ Housing: Cast iron AO309 style, heavy duty
✅ Locking: Set-screw collar; covers: none; expansion: no
✅ Lubrication: 1/8-27 NPT fitting tap, relubricatable
✅ Max temp: 212 F (100 C); HTS 8483.20.40.40; weight 10.48 lb (4.76 kg)

💡 What is a pillow block bearing used for? Pillow block bearings support rotating shafts and make on-machine mounting easy. - Support shafts in conveyors, fans, and agricultural equipment with sealed ball bearing protection. - Great for linear slide units, motor shafts, and pulley systems needing heavy duty housings and relubrication. - Handy for quick swaps on-site; consider ceramic inserts for high-wear or corrosive cases.