Product Specifications
| Parameter |
Details |
| Model NO. |
N305em, NJ305em, NF305em |
| Product Name |
Cylindrical Roller Bearing |
| Specification |
25*62*17mm |
| Bore Size |
15-90 mm |
| Outer Dimension |
35mm-180mm |
| Material |
Bearing Steel |
| Structure |
Cylindrical |
| Load Direction |
Radial Bearing |
| Separated |
Separated |
| Spherical |
Non-Aligning Bearings |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Vibration |
Z1V1, Z2V2, Z3V3 |
| Service |
OEM, ODM |
| Trademark |
NSK |
| Origin |
Japan |
| HS Code |
8482500090 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Equipment, Reducers |
| Automotive |
Transmission Systems, Gearboxes |
| Agriculture |
Harvesters, Tractors |
| New Energy |
Wind Turbines, Photovoltaic Equipment |
| Construction |
Excavators, Heavy-Duty Machinery |
Minimize Downtime with High Precision N305em NJ305em NF305em Cylindrical Roller Bearings
Industrial machinery operators know the frustration of unexpected downtime caused by bearing failures. When low-quality bearings wear prematurely, production lines halt, repair costs mount, and deadlines slip. Sourcing reliable high-precision bearings often means navigating minimum order quantities that don’t fit urgent maintenance needs, or waiting weeks for delivery. These challenges disrupt operations and eat into profitability.
Engineered for Reliable Performance in Critical Machinery
Our High Precision Cylindrical Roller Bearings N305em, NJ305em, and NF305em are designed to address these pain points. With precision ratings from P0 to P4 and noise grades Z1V1 to Z3V3, they deliver consistent performance in industrial machinery like machine tools and reducers. Backed by our ISO9001-certified quality control processes, each bearing undergoes rigorous testing to ensure durability. We offer flexible ordering with 1pc MOQ for standard items and 3–5 days sample lead time, so you can get the exact bearings you need without unnecessary delays.
Optimized for High-Load, High-Precision Applications
Cylindrical roller bearings excel in applications requiring high radial load capacity and precise alignment. The N305em, NJ305em, and NF305em models, with their 25*62*17mm dimensions, are ideal for machinery operating under continuous heavy loads, such as printing presses and agricultural equipment. Their separated structure allows for easy mounting and dismounting, simplifying maintenance and reducing equipment downtime. Whether your machinery runs at high speeds or requires strict dimensional accuracy, these bearings provide the stability needed to keep operations running smoothly.
Key Technical Features That Drive Performance
The performance of these cylindrical roller bearings is defined by critical technical attributes. Precision rating P4 ensures minimal radial runout, essential for maintaining accuracy in CNC machine tools where even微小偏差 can compromise workpiece quality. Vibration grade Z3V3 reduces operational noise, a crucial factor in factory environments where noise pollution affects worker comfort and compliance. The use of high-grade bearing steel enhances wear resistance, extending service life under heavy loads. Dynamic load capacity is optimized through precision manufacturing, allowing these bearings to handle the rigorous demands of industrial machinery without premature failure.
Why Authenticity Matters for Long-Term Cost Efficiency
Choosing genuine bearings over counterfeit alternatives directly impacts your total cost of ownership. Counterfeit bearings often fail early, leading to unplanned downtime, costly repairs, and potential damage to surrounding components. In contrast, our authentic NSK cylindrical roller bearings come with a 12-month global warranty, ensuring protection against manufacturing defects. The initial investment in genuine bearings is offset by longer service life, reduced maintenance needs, and fewer production interruptions. We provide full traceability for every bearing, giving you confidence in the integrity of your supply chain.
Your Trusted Partner for Bearing Solutions
Since 2005, Jinan Saifan Bearing has served global buyers across Europe, America, Southeast Asia, and the Middle East. Our integrated manufacturing and exporting capabilities ensure stable supply, with a production capacity of 100,000 bearings monthly. We hold ISO9001 and ISO14001 certifications, reflecting our commitment to quality and environmental standards. Our technical team offers free guidance on bearing selection and application, helping you avoid costly mismatches. With bulk delivery times of 5–15 days and multiple payment options including T/T and Alibaba Trade Assurance, we make sourcing reliable bearings straightforward and secure.
Packaging & Shipping
- Carton and pallet packaging for secure transportation
- 3–5 days sample lead time for urgent evaluation
- 5–15 days bulk delivery to meet production schedules
- Flexible shipping via DHL, FedEx, UPS, air, or sea freight
- 1pc MOQ available for standard items, supporting emergency repairs
Get Your Bearings Delivered Fast – Minimize Downtime Today
Every hour of downtime costs your business money. Whether you need a single replacement bearing or a bulk order for scheduled maintenance, we’re ready to fulfill your request. Send us your bearing model, application details, and quantity, and our team will respond with a quote within 24 hours. Don’t let bearing issues slow you down – secure your high-precision cylindrical roller bearings now.
Frequently Asked Questions
Q: Are these bearings authentic NSK products?
A: Yes, we supply authentic NSK bearings with full traceability to ensure genuine quality and performance.
Q: How can I confirm if the N305em/NJ305em/NF305em is suitable for my equipment?
A: Provide your equipment model or operating parameters (load, speed, temperature), and our technical team will verify compatibility at no cost.
Q: What warranty do these bearings come with?
A: All bearings include a 12-month global warranty covering manufacturing defects, with free replacement or refund available.
Q: What is the minimum order quantity for these bearings?
A: We accept 1pc MOQ for standard items, ideal for emergency repairs or small-scale needs.
Q: How quickly can I receive my order?
A: Samples ship within 3–5 days, and bulk orders are delivered in 5–15 days via your preferred shipping method.
Q: How do I verify the authenticity of the bearings?
A:
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High Precision Cylindrical Roller Bearing
High Precision N305em NJ305em NF305em Bearings
Industrial Machinery Bearings
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NJ305em Bearing
