Product Specifications
| Parameter |
Details |
| Model NO. |
Na4844A |
| Seals Type |
Open |
| Lubricate |
Oil Grease Dry |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Number of Row |
Single Row |
| Service |
OEM ODM |
| Rolling Body |
Roller Bearings |
| Material |
Bearing Steel |
| Spherical |
Non-Aligning Bearings |
| Load Direction |
Radial Bearing |
| Separated |
Separated |
| Outer Dimension |
35mm-400mm |
| Specification |
17*40*16mm |
| HS Code |
8482500090 |
Application Industries
| Industry |
Typical Equipment |
| Automotive |
Gearboxes, Transmission Systems |
| Manufacturing |
Machine Tools, Precision Machining Equipment |
Na4844A Needle Roller Bearing: Stop Gearbox Failures with Precision Engineering
Gearbox downtime costs manufacturers thousands in lost production. Low-quality bearings often fail prematurely under radial loads, causing unexpected shutdowns. Many suppliers enforce high minimum orders, leaving you stranded with urgent repairs. Getting the right precision bearing for your machine tool shouldn’t mean compromising on delivery or quality.
Engineered for Automobile Gearboxes and Machine Tools
The Na4844A Needle Roller Bearing delivers reliable performance where it matters most. With P0-P4 precision ratings, it meets the strict demands of automobile gearboxes and machine tools. Our integrated manufacturing and export capabilities ensure consistent quality, backed by ISO9001 certification. Whether you need standard specifications or custom solutions, we support orders from 1 piece, with samples available in 3–5 days.
Optimized for Radial Load Applications
Designed as a radial bearing with a single row of rollers, the Na4844A excels in high-load environments. Its separated structure allows for easy installation and maintenance, critical in tight gearbox assemblies. The open design accommodates various lubrication methods—oil, grease, or dry running—adapting to your specific operating conditions. At 17*40*16mm, it fits seamlessly into compact machinery without sacrificing durability.
Precision That Drives Performance
Precision rating directly impacts operational efficiency. The Na4844A offers P0-P4 grades, with P4 ensuring minimal radial runout for high-speed machine tools. Bearing steel construction provides exceptional wear resistance, extending service life under continuous use. As a non-aligning bearing, it maintains stability in applications with minimal shaft deflection, reducing vibration and noise in gearbox operations. These technical details translate to smoother performance and fewer replacements.
Why Compromise on Bearing Quality?
Choosing inferior bearings may save upfront costs but leads to higher long-term expenses. Early failures cause unplanned downtime, repair labor, and potential damage to adjacent components. Our Na4844A Needle Roller Bearing undergoes rigorous quality control in our in-house lab, ensuring compliance with international standards. With a 12-month global warranty, we stand behind every product, offering defect replacement or refund for manufacturing issues. Invest in reliability—reduce total cost of ownership with bearings built to last.
Your Trusted Bearing Partner Since 2005
With over 18 years serving global buyers, Jinan Saifan Bearing combines expertise with responsive service. Our R&D team supports OEM/ODM customization, tailoring bearings to your exact specifications while maintaining confidentiality. We hold ISO14001 certification, reflecting our commitment to sustainable manufacturing. Bulk orders ship within 5–15 days, with free technical guidance available throughout your purchase. Our customer base spans Europe, America, Southeast Asia, and the Middle East—partner with a supplier trusted by industrial leaders worldwide.
Packaging & Shipping
- Carton and pallet packaging for secure transport
- 3–5 days sample lead time for testing and validation
- 5–15 days bulk delivery for standard orders
- Multiple payment options: T/T, credit card, Alibaba trade assurance
- 1pc MOQ for standard items, ideal for emergency repairs
Get Your Na4844A Bearing Today
Don’t let equipment downtime disrupt your production schedule. The Na4844A Needle Roller Bearing is ready to ship—send your inquiry with quantity and application details for a prompt quote. Our team ensures fast response and clear communication, so you can get back to what matters most: keeping your machinery running.
Frequently Asked Questions
Q: Is the Na4844A Needle Roller Bearing authentic and traceable?
A: Yes, we manufacture bearings in-house under strict quality controls, with full traceability from raw materials to finished products. ISO9001 certification ensures compliance with international standards.
Q: How can I confirm if this bearing fits my gearbox or machine tool?
A: Provide your equipment model or technical specifications (load, speed, dimensions), and our engineering team will verify compatibility and offer free technical guidance.
Q: What warranty coverage do you offer?
A: We provide a 12-month global warranty. Manufacturing defects are covered by free replacement or refund, with responsive after-sales support.
Q: What is the minimum order quantity for the Na4844A?
A: Standard items have a 1pc MOQ, supporting small-batch purchases and emergency repair needs.
Q: How long does shipping take, and what methods are available?
A: Samples ship in 3–5 days, bulk orders in 5–15 days. We offer flexible logistics via major carriers (DHL, FedEx, etc.) or sea/air freight as needed.
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