Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
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 8482500090.7
Day Prototype
vs. 8-12 wks standard
50+
Countries Served
Global logistics network
12h
Quote Response
Expert engineers on call
Typical Applications
Wind Power
Mining
Steel & Metallurgy
Automotive / EV
Rail Transit
Precision Machinery
Genuine SKF Bearings
NDA Protected
Free Sample for Orders > $50K
Global Shipping
Product Details
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.
Product Summary
- Product Name
- Nu311EM Cylindrical Roller Bearing – High-Load, Precision, Low Friction
- Category
- Cylindrical Roller Bearing
- Brand
- SKF
- Certification
- ISO 9001 · TS 16949
- Lead Time
- 7 Working Days
Get a Custom Quote
Our engineers will respond within 12 hours with a tailored solution.
Request QuoteGeneral Specifications
| Bearing Type | Cylindrical Roller Bearing |
| Brand | SKF |
| Quality Standard | ISO 9001 / TS 16949 |
| Precision Grade | P0 / P5 / P6 (custom) |
| Material | Chrome Steel / Stainless |
| Cage Material | Steel / Brass / Polyamide |
| Lubrication | Grease / Oil (specify) |
| Operating Temp. | -40°C to +200°C |
| Min. Order Qty | 1 pc (samples available) |
| Prototype Lead Time | 7 Working Days |
Performance Parameters
| Load Capacity | Contact for C0/Cr values |
| Speed Rating | Contact for ndm limit |
| Vibration Level | Z1 / Z2 / Z3 (custom) |
| Noise Level | V1 / V2 / V3 (custom) |
| Fatigue Life | L10h per ISO 281 |
| Sealing Options | Open / Z / 2Z / RS / 2RS |
Custom Specifications Available
Our engineering team can modify bearing dimensions, materials, seals, and clearances to meet your specific operating requirements. Submit your drawing or spec sheet for a tailored proposal.
Wind Power
Main shaft bearings, gearbox bearings, and generator bearings for onshore and offshore wind turbines.
Mining & Quarrying
Heavy-duty bearings for crushers, conveyors, and rotary equipment in extreme dust and shock-load environments.
Steel & Metallurgy
High-temperature bearings for rolling mills, continuous casting, and furnace applications.
Automotive / EV
Wheel hub bearings, transmission bearings, and e-motor bearings for passenger and commercial vehicles.
Rail Transit
Axle box bearings, traction motor bearings, and gearbox bearings meeting EN/UIC railway standards.
Precision Machinery
High-precision spindle bearings, angular contact bearings, and super-precision bearings for CNC and robotics.
Application Design
EngineeringOur engineers analyze your operating conditions -- load, speed, temperature, environment -- and select or design the optimal bearing solution to maximize service life and reduce total cost of ownership.
Custom Modification
7-Day TurnaroundNeed non-standard dimensions, special materials, or modified clearances? We can modify standard SKF bearings or manufacture fully custom solutions with a 7-day prototype turnaround.
Failure Analysis
DiagnosticsWhen bearings fail prematurely, our team conducts root-cause analysis using advanced diagnostic tools to identify the failure mode and recommend corrective action.
Predictive Maintenance
Up to 40% Less DowntimeWe deploy vibration monitoring, thermal imaging, and oil analysis programs that detect bearing deterioration early -- reducing unplanned downtime by up to 40%.
On-site Installation
Global CoverageProper installation is critical to bearing performance. Our certified technicians provide on-site installation support, alignment verification, and operator training worldwide.
Lifecycle Support
Enterprise SLAFrom initial selection through end-of-life, our dedicated account managers provide scheduled maintenance plans, re-lubrication programs, and replacement forecasting for enterprise clients.
Why SKF China
The engineering partner advantage
7 Days
Prototype Lead Time
vs. 8-12 weeks via standard channels
15+
Certified Engineers
SKF-certified, on-call for your project
50+
Countries Delivered
Reliable global logistics network
Request a Quote
Get a custom quote for
Nu311EM Cylindrical Roller Bearing – High-Load, Precision, Low Friction
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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