High Precision N304EM Cylindrical Roller Bearing – China Made, ISO Certified
Basic Info
| Bore Diameter | 15–90 mm |
|---|---|
| Outer Diameter | 35–180 mm |
| Width | 15 mm (e.g., 20×52×15 mm) |
Introduction
Cylindrical roller bearing 307, model NUP304EM, made of bearing steel. Designed for radial loads, non-aligning, separated structure. Precision grades P0–P2, vibration classes Z1V1–Z3V3. Lubricated with grease or oil. OEM/ODM service available. Origin: China.
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Description
Key Specifications & Why SKF-Grade Buyers Choose This Cylindrical Roller Bearing
| Description | Core Value |
|---|---|
| Model Range: N304EM / NJ304EM / NF304EM / NU304EM / NUP304EM | Interchangeable high-precision series — ideal for OEM retrofit & global standard compliance |
| Bore Size: 15–90 mm | OD: 35–180 mm | Spec: 20×52×15 mm | Compact yet robust design — fits tight-space industrial gearboxes and motors |
| Material: Premium GCR15 Bearing Steel | Extended fatigue life + superior hardness (HRC 61–65) vs. generic carbon steel |
| Precision Grades: P0, P6, P5, P4, P2 | Meets SKF ABEC-1 to ABEC-9 equivalents — critical for high-RPM applications |
| Vibration Levels: Z1V1 / Z2V2 / Z3V3 | Ultra-low noise operation — certified for precision machine tools & medical equipment |
| Lubrication: Grease or Oil Compatible | Flexible maintenance — supports sealed-for-life or re-lubricatable setups |
| Load Direction: Pure Radial | Optimized for heavy radial loads with minimal friction — 20% higher dynamic load rating than standard ISO 355 |
| Separated Design (NUP/NJ/NF) | Easy installation & axial location control — reduces assembly time by up to 35% |
| OEM/ODM Support + BDL Brand (China Origin) | SKF-compatible specs, full traceability, and factory QC — no counterfeit risk |
| HS Code 8482500090 | Carton/Pallet Packaging | Hassle-free global customs clearance & logistics-ready shipping |
Engineered for demanding applications: CNC spindles, wind turbine gearboxes, mining conveyors, and automotive test rigs. Backed by 100,000-unit/month production capacity and ISO 9001-certified quality control. Unlike budget alternatives, this series features micro-ground raceways, optimized roller profiling, and strict dimensional tolerances (ΔDmp ≤ 8 μm). FAQ: Can it replace SKF NU304E? Yes — identical mounting dimensions and load ratings. Is pre-lubricated grease included? Optional upon request. What’s the max operating temp? 120°C continuous (with lithium complex grease). Ready to verify fitment or request a sample batch? Send your inquiry now — our SKF-experienced engineers reply within 2 hours.
