Durable inner ring for shell type bearings, precisely machined from high carbon steel to fit 1 1/8 inch bore and 1 3/8 inch outer diameter with 13.08 mm width, compatible with BA228Z, BHA228Z and YB228 housings

IRB188 Inner Ring for shell-type needle bearings
✔️ ID 1 1/8" (28.58 mm), OD 1 3/8" (34.93 mm), W 13.08 mm (0.515 in), for BA228Z/BHA228Z/YB228, high carbon steel

This inner ring is designed to work with shell-type needle roller bearings and is compatible with BA228Z, BHA228Z, and YB228 housings. It delivers a precise, durable seating surface in compact machinery where reliable race interfaces matter.

✅ Bore: 1 1/8" (28.58 mm) ID
✅ Outer diameter: 1 3/8" (34.93 mm) OD
✅ Width: 13.08 mm (0.515 in) W
✅ Material: High carbon steel; shell-type design
✅ For use with BA228Z, BHA228Z, YB228

💡 What is an inner ring used for in shell-type needle bearing assemblies?

This handy explanation covers how the inner ring works with the needle rollers and outer race in compact machinery.

• Applications: supports precise spacing in slim housings
• Benefits: reduces wear, maintains alignment, and extends service life
• Key compatibility: BA228Z, BHA228Z, YB228 series