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Needle Bearing
NAVA Needle Roller Bearings Rnav4914-4920, High-Load, Precision Fit
Basic Info
| Inner Diameter | 80 mm |
| Outer Diameter | 100 mm |
| Thickness | 30 mm |
| Needle Roller Bearing, Closed, Radial | |
Introduction
RNAV4914 is a high-precision needle roller bearing without inner/outer rings, ideal for compact radial load applications. Made of premium bearing steel, it supports P0–P2 precision grades and C0–C4 clearances. Supplied with grease or oil lubrication, it ensures smooth operation and long service life in industrial machinery.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 RNAV4914–RNAV4920 Needle Roller Bearings
| Description | Core Value |
|---|---|
| Ultra-compact design (e.g., 80×100×30 mm) | Maximizes load capacity in minimal radial space — ideal for tight-engineered machinery |
| Radial-only, cageless needle roller structure | Higher dynamic load rating vs. standard deep-groove bearings of same OD |
| Bearing steel (GCr15) with precision ground raceways | Ensures P0–P2 accuracy and C0–C4 clearance control for consistent performance |
| Closed-type, oil/grease-lubricated | Sealed against contamination; extends service life in harsh industrial environments |
| No inner/outer ring design | Reduces weight & inertia; enables direct shaft/housing mounting — lowers assembly cost |
| Made in China, ISO/TS 16949 compliant | BDL-manufactured with 1M pcs/year capacity — reliable OEM/ODM supply chain |
| HS Code 8482102000 — globally accepted | Faster customs clearance; compatible with SKF-compatible replacement programs |
| Used in automotive transmissions, gearboxes, pumps & construction equipment | Proven in high-cycle, moderate-speed applications demanding rigidity & low friction |
| Complies with SKF RNAV series dimensional standards | Direct drop-in replacement for legacy SKF RNAV49xx — no redesign needed |
| 3–7 day delivery + carton/pallet packaging | Fast lead time supports JIT inventory — backed by 12-month quality warranty |
Why choose these over generic alternatives? Unlike economy-grade needle rollers, our RNAV49xx series features tighter raceway roundness (≤0.005 mm), optimized roller end geometry to reduce edge stress, and batch-tested hardness (60–64 HRC). All units undergo 100% noise & rotation testing.
FAQ: Q: Are these suitable for high-speed applications? A: Optimized for ≤3,000 rpm — consult engineering team for >3,500 rpm use. Q: Can they replace SKF RNAV4916 exactly? A: Yes — identical ABEC/P0 tolerances and load ratings. Q: Is custom clearance available? A: Yes — C3/C4 options shipped within 5 working days.
Ready to validate fitment or request samples? Contact us today for technical datasheets and volume pricing.
Product Summary
- Product Name
- NAVA Needle Roller Bearings Rnav4914-4920, High-Load, Precision Fit
- Category
- Needle 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 | Needle 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
NAVA Needle Roller Bearings Rnav4914-4920, High-Load, Precision Fit
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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