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TS 16949
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Needle Bearing
NAVA Needle Roller Bearings Rnav4922-4930, High-Load, Low-Friction
Basic Info
| Inner Diameter | 125 mm |
|---|---|
| Outer Diameter | 150 mm |
| Thickness | 40 mm |
| Type | Needle Roller Bearing, Radial, Closed |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
RNAV4922 is a high-precision needle roller bearing without inner/outer rings, designed for radial load applications. Compact (125×150×40 mm), durable, and compatible with grease or oil lubrication. Available in precision grades P0–P2 and clearances C0–C4. Made in China, OEM/ODM supported.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 SKF-Grade RNAV49 Series Needle Roller Bearings
| Description | Core Value |
|---|---|
| Model Range | RNAV4922–RNAV4930 (interchangeable with SKF HK/NA series) |
| Design | Drawn cup, no inner/outer ring — saves space, enables compact shaft mounting |
| Load Capacity | High radial load rating due to dense needle arrangement & hardened steel rollers |
| Material & Hardness | GCR15 bearing steel, HRC 58–64 — superior wear resistance & fatigue life |
| Precision & Clearance | P0–P2 accuracy; C0/C3/C4 clearance options — ensures optimal fit & low noise |
| Lubrication | Pre-greased (lithium complex) or oil-ready — ready for immediate installation |
| Application Scope | Automotive transmissions, gearboxes, pumps, agricultural machinery, industrial actuators |
| Quality Assurance | 100% dimensional inspection, vibration testing, ISO 9001 & IATF 16949 certified production |
| SKF Compatibility | Exact dimensional & performance match — direct replacement without redesign |
| Lead Time & Support | 3–7 days delivery; free technical consultation & OEM/ODM support available |
Engineered for reliability where space is tight and loads are high — the RNAV49 series delivers SKF-level performance at competitive trade pricing. Unlike generic alternatives, these bearings feature tighter roller diameter tolerance (±0.003 mm), optimized cage geometry for reduced friction, and consistent surface finish (Ra ≤ 0.2 μm). Common questions: Are they sealed? Yes — closed-type design prevents contamination. Can they run without a shaft shoulder? Yes — compatible with retained or press-fit applications. What’s the max speed? Up to 4,500 rpm (with proper lubrication & cooling). Ready to verify fitment or request samples? Contact us now for your customized quote.
Product Summary
- Product Name
- NAVA Needle Roller Bearings Rnav4922-4930, High-Load, Low-Friction
- 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 Rnav4922-4930, High-Load, Low-Friction
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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