UCAO311-35 Single Heavy Set Screw Pillow Block Bearing AO Style, 2-3/16 in (55.56 mm) I.D., Cast Iron Housing, Wide Inner Ring, Set-Screw Lock, 3/4 in (19.05 mm) Bolt, 1/8-27 NPT Lube Fitting, Sealed Ball Insert

Single sealed pillow block bearing AO style wide inner ring
✔️ 2-3/16 in/55.56 mm I.D., 3/4 in/19.05 mm bolt, sealed, 1/8-27 NPT

This single heavy set-screw pillow block is a sealed ball bearing unit for supporting rotating shafts in conveyors, industrial equipment, and linear slide units. Heavy duty cast iron housing with wide inner ring for longer life.

✅ I.D.: 2-3/16 in / 55.56 mm
✅ Bolt size: 3/4 in / 19.05 mm, AO311 housing style
✅ Housing: cast iron; inner ring: wide; insert: sealed ball bearing steel
✅ Locking: set screw; lubrication fitting: 1/8-27 NPT; relubrication allowed
✅ Seal type: contact seal with slinger; max temp rating 212°F
✅ HTS code 8483.20.40.40; single bearing, sold each unit

💡 What is a pillow block bearing used for in conveyor and shaft support applications? A pillow block bearing supports and locates a rotating shaft while protecting the bearing insert from contamination. - Supports rotating shafts in conveyors, drive lines, and linear slide units for smooth, aligned motion. - Sealed ball bearing inserts keep out dirt and allow relubrication for longer service life under heavy loads. - Handy for quick replacement or maintenance; pick set-screw or other locking styles to match shaft needs.