NTN/KOYO/TIMKEN NF309EM-311EM Cylindrical Roller Bearings – High-Precision, Heavy-Duty
Basic Info.
| Inner Diameter | 45 mm |
| Outer Diameter | 100 mm |
| Width | 25 mm |
| Material | Bearing Steel |
| Type | Cylindrical Roller Bearing |
| Load Direction | Radial Bearing |
Description
NF309EM is a high-precision single-row cylindrical roller bearing made of bearing steel. It features radial load capacity, open seal type, and supports oil/grease/dry lubrication. Designed for OEM/ODM applications, it complies with precision grades P0–P2 and is manufactured in China (HS Code: 8482500090).

















