Nu311EM Cylindrical Roller Bearing – High-Load, Precision, Low Friction
Basic Info.
| Bore Size | 15–90 mm |
|---|---|
| Outer Dimension | 35–180 mm |
| Specification | 55×120×29 mm |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
| Lubrication | Grease or Oil |
Introduction
Cylindrical roller bearing 307 (Model NF311EM) offers high radial load capacity, precision ratings from P0 to P2, and reliable performance in industrial applications. Made of premium bearing steel, it supports OEM/ODM service and complies with HS code 8482500090.
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Description
Key Specifications & Advantages of NF311EM Cylindrical Roller Bearing
| Description | Core Value |
|---|---|
| Model: NF311EM (Nu311EM/NUP311EM compatible) | Interchangeable with SKF NU311, NUP311 — seamless OEM replacement |
| Bore × OD × Width: 55 × 120 × 29 mm | Precise metric dimensions ensure drop-in fit in industrial gearboxes & motors |
| Material: High-carbon chromium bearing steel (GCr15) | Superior hardness & fatigue resistance — 2× service life vs. standard grade |
| Precision Rating: P0/P6 optional | P6 grade meets SKF ABEC-3 tolerance — ideal for high-speed applications |
| Lubrication: Grease or oil-ready | Pre-greased with NLGI #2 lithium complex — ready for immediate installation |
| Load Capacity: High radial, limited axial (N-type) | Optimized roller guidance for heavy-duty conveyor & pump shafts |
| Vibration Grade: Z2V2 certified | Low-noise operation — perfect for HVAC fans and precision machinery |
| Separated Design | Easy mounting/dismounting — reduces downtime during maintenance |
| OEM/ODM Support & 100K/mo Capacity | Fast lead time & custom branding — trusted by Tier-1 European distributors |
| Origin: China (ISO 9001 & IATF 16949 certified) | Rigorous 100% dimensional & rotation testing — zero defect guarantee |
Engineered for reliability where SKF performance is expected — but at 30% lower TCO. Used in wind turbine gearboxes, mining conveyors, and textile machinery across EU & ASEAN. Unlike generic brands, BDL’s NF311EM features micro-ground raceways, optimized internal clearance (C3 optional), and anti-corrosion surface treatment. FAQ: Yes — fully compatible with SKF mounting dimensions and load charts. Yes — available with laser-engraved BDL+SKF cross-reference marking. Yes — technical datasheets and RoHS/REACH reports provided instantly. Ready to verify compatibility or request a sample? Contact us now for your free bearing selection support.
