Needle Roller Bearing Inner Ring IR 445228 Koyo NRB Separable Chrome Steel For Tough Precision Work 2.75 Inch Bore 3.25 Inch Outer Diameter 1.75 Inch Width

Koyo IR 445228 Needle Roller Inner Ring, Separable Bearing, Single
✔️ 2.75 in bore, 3.25 in OD, 1.75 in width, chrome steel

This chrome steel needle roller bearing inner ring is a heavy-duty, separable component designed for high-load, precision applications. It's commonly used in CNC machines, linear guides, and heavy machinery where accurate alignment and long life under demanding conditions matter.

✅ Bore diameter: 2.750 in
✅ Outside diameter: 3.250 in
✅ Width: 1.750 in
✅ Material: Chrome Steel
✅ Series: IR
✅ Minimum radius: 2.03 mm
✅ Lubrication hole type: No Lubrication Hole
✅ Standards met: ASTMF-2431
✅ Compatible bearing: HJ-526828
✅ Closure type: N/A
✅ Type of Needle Bearing: Separable Inner Ring Only - Heavy Duty Needle Roller Bearing
✅ Weight: 1.14 lbs

💡 What is a needle roller bearing inner ring used for in precision linear motion systems? This handy component supports heavy loads in tight spaces and helps maintain precise alignment. - High load capacity in compact form for CNC slides and actuators - Separable inner ring simplifies mounting and maintenance - Chrome steel raceways resist wear in tough environments - Compatible with standard bearing housings like HJ-526828