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Needle Bearing
Bdl Needle Roller Bearings NA4917 NA4918 NA4919 High Quality
Experience smoother, more reliable machinery performance with our precision-engineered Needle Roller Bearings—designed to reduce friction and extend equipment lifespan in high-load applications. The NA4917, NA4918, and NA4919 models deliver consistent rotational stability, ensuring minimal downtime even under continuous operation.
- High-quality construction minimizes wear, addressing common issues with premature bearing failure
- Optimized needle roller design provides exceptional load capacity without sacrificing speed
- Perfect fit for industrial gearboxes, pumps, and automotive transmissions where space is limited
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
Product Specifications
| Parameter | Details |
|---|---|
| Bearing Type | Needle Roller Bearings |
| Model Number | NA4917, NA4918, NA4919 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Automation Equipment | Linear motion systems, precision slides |
| Hydraulic Systems | Cylinder piston rods, hydraulic actuators |
| Mechanical Engineering | Transmission components, gearboxes |
Struggling with Needle Roller Bearing Reliability? NA4917-NA4919 Series Delivers Consistent Performance
Finding needle roller bearings that maintain precision under heavy loads can be challenging. Many buyers face premature wear from substandard materials or struggle to source specific models across multiple suppliers, leading to production delays and maintenance headaches.
Designed for Heavy-Duty Applications
Our NA4917, NA4918, and NA4919 needle roller bearings address these challenges with ISO 9001-certified manufacturing processes and comprehensive quality control. As a supplier with access to both our own production and international brands like SKF, NSK, and NTN, we offer a single source for all your bearing needs—whether you require standard models or hard-to-find specifications for critical equipment like hydraulic presses or automated assembly lines.
Optimal Performance in High-Load Environments
These needle roller bearings excel in applications with radial loads and limited axial space, such as conveyor systems and machine tool spindles. Their compact design delivers high load-carrying capacity while maintaining low friction, making them ideal for high-speed operations where precision and durability are non-negotiable.
Key Engineering Features for Longevity
The NA4917-NA4919 series incorporates precision-ground raceways and high-quality roller elements to ensure uniform load distribution. This attention to detail minimizes stress concentrations, reducing the risk of premature failure. The bearings’ surface hardness, tested during production, enhances wear resistance—critical for extending service life in dust-prone industrial environments. Additionally, their standardized dimensions ensure interchangeability with major international standards, simplifying replacement and reducing inventory costs.
Total Cost of Ownership Matters
Choosing the right needle roller bearing directly impacts your bottom line. Inferior bearings often lead to increased downtime, frequent replacements, and costly repairs to adjacent components. Our bearings, backed by rigorous testing for dimensional accuracy and material quality, help lower long-term maintenance expenses. By following ISO 281 guidelines for bearing life calculation, we ensure our products meet the performance expectations required for your application, focusing on reliability over short-term cost savings.
Quality You Can Trust
Our commitment to quality starts with raw material inspection and continues through成品尺寸, hardness, and surface treatment testing. All NA4917-NA4919 bearings come with a warranty against manufacturing defects, providing peace of mind for your critical operations. With extensive现货库存, we support low minimum order quantities and flexible shipping options, ensuring you get the bearings you need when you need them.
Packaging & Shipping
- Neutral packaging suitable for industrial transport
- Same-day shipping for in-stock items
- Multiple logistics options: express courier, air freight, or sea freight
- Low minimum order quantity available for trial applications
Get Your NA4917-NA4919 Bearing Quote Today
Whether you need a single bearing or bulk quantities, provide us with your model number, dimensions, and quantity requirements, and we’ll deliver competitive pricing and lead time. With access to full brand range, we can also assist with cross-referencing if you’re looking for alternatives to existing suppliers.
Frequently Asked Questions
Q: Do you supply other bearing brands or models besides the NA4917-NA4919 series?
A: Yes, we support inquiries for all bearing brands and models, including international brands like SKF, NSK, NTN, and domestic quality brands, supplying according to customer-specified standards.
Q: How can I confirm if the NA4917-NA4919 bearings fit my equipment?
A: Provide your equipment’s required bearing dimensions (bore diameter, outer diameter, width) or original model number, and our technical team will verify compatibility.
Q: What is your warranty policy for these needle roller bearings?
A: We provide a warranty period covering manufacturing defects; defective products can be replaced or returned, with specific terms subject to contract agreement.
Q: What is the minimum order quantity for the NA4917-NA4919 series?
A: We offer low minimum order quantities, supporting small-batch trial orders to meet your initial testing or maintenance needs.
Q: How quickly can you ship the NA4917-NA4919 bearings?
A: In-stock bearings are shipped the same day; we offer flexible logistics options including express courier, air freight, and sea freight based on your urgency.
Q: Do you provide OEM/ODM customization for needle roller bearings?
A: Yes, we support custom bearing manufacturing according to customer-provided drawings or specifications for specialized applications.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
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Product Summary
- Product Name
- Bdl Needle Roller Bearings NA4917 NA4918 NA4919 High Quality
- 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
Bdl Needle Roller Bearings NA4917 NA4918 NA4919 High Quality
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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