Description
Key Specifications & Advantages of SKF-Grade NUP221EM Cylindrical Roller Bearing
| Description | Core Value |
|---|---|
| Model: NUP221EM (interchangeable with N221EM, NJ221EM, NF221EM, NU221EM) | Universal fit for lathe spindles & precision machinery — no redesign needed |
| Dimensions: 105×190×36 mm (standard ISO metric size) | Direct OEM replacement — reduces downtime and inventory complexity |
| Material: High-purity GCR15 bearing steel (equivalent to SKF SSF 5010) | Superior hardness (HRC 60–64) and fatigue resistance vs. generic steel |
| Precision Grade: P0/P6/P5 available (P5 = ±3 µm radial runout) | Enables high-speed spindle stability (>8,000 rpm) and micron-level accuracy |
| Load Capacity: High radial + axial (single-direction) via fixed NUP flange | Optimized for heavy-duty turning, grinding, and CNC applications |
| Seal Type: Open (grease/oil/dry lubrication compatible) | Flexibility for diverse cooling/lubrication systems — ideal for OEM integration |
| Separable Design | Easy installation, maintenance & shaft alignment — saves labor cost |
| Origin: China (ISO 9001 & IATF 16949 certified production) | Rigorous 100% dimensional & noise testing — meets SKF performance benchmarks |
| HS Code: 8482500090 (globally recognized for customs clearance) | Hassle-free international shipping & documentation support |
| Applications: CNC lathes, gearboxes, rolling mills, pump shafts, machine tool spindles | Proven in >12 industrial sectors — request case studies |
Why choose our NUP221EM over standard alternatives? We match SKF’s dynamic load rating (Cr = 245 kN), use vacuum-degassed steel, and apply optimized roller profiling — reducing edge stress by 22%. All units are pre-lubricated with Klüber Isoflex NBU 15 grease (optional).
FAQ: Q: Is preload adjustment supported? A: Yes — NUP design allows precise axial location. Q: Can it replace SKF NUP221E? A: Fully interchangeable (same ABEC-1/P6 tolerances). Q: What’s the max operating temperature? A: 120°C continuous (150°C peak, with proper lubrication).
Ready to validate performance in your application? Send your inquiry now — get technical datasheets, sample lead time, and spindle compatibility analysis within 2 hours.
