Product Specifications
| Parameter |
Details |
| Model NO. |
NJ321, NJ326, NJ328, NJ338, NJ340EM |
| Outer Dimension |
Large (200-430mm) |
| Material |
Bearing Steel |
| Spherical |
Non-Aligning Bearings |
| Load Direction |
Radial Bearing |
| Separated |
Separated |
| Product Name |
Cylindrical Roller Bearing |
| Structure |
Cylindrical |
| Seals Type |
Open |
| Lubricate |
Oil, Grease, Dry |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Number of Row |
Single Row |
| Service |
OEM, ODM |
| Transport Package |
Carton, Pallet |
| Specification |
105*225*49 mm |
| Origin |
China |
| HS Code |
8482500090 |
| Production Capacity |
100000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Machinery, Reducers |
| Automotive |
Transmission Systems, Gearboxes |
| Agriculture |
Harvesters, Tractors |
| New Energy |
Wind Turbines, Solar Equipment |
| Construction |
Excavators, Heavy-Duty Machinery |
Reduce Downtime with High Precision Cylindrical Roller Bearings NJ321 NJ326 NJ328
Industrial machinery operators know the cost of unexpected downtime—missed deadlines, maintenance overtime, and production losses add up fast. When bearings fail prematurely due to poor precision or material quality, the ripple effects disrupt entire operations. Sourcing reliable high-precision bearings often means navigating minimum order quantities that don’t fit urgent repair needs, or waiting weeks for overseas shipments.
Engineered for Industrial Machinery Reliability
Our Cylindrical Roller Bearings NJ321, NJ326, and NJ328 are designed to address these challenges. With precision ratings from P0 to P4, they meet the strict requirements of machine tools, printing presses, and reducers where accurate rotation and load capacity are critical. As an integrated manufacturer with ISO9001 and ISO14001 certifications, we ensure consistent quality across every bearing, supported by a full R&D and QC lab. Whether you need a single replacement unit or bulk orders for production lines, our 1pc MOQ and 5–15 day bulk delivery keep your machinery running.
Optimized for Heavy-Duty Industrial Environments
These cylindrical roller bearings excel in applications with high radial loads and moderate speeds—common in industrial gearboxes, conveyors, and machining centers. The separated inner and outer rings allow for easy mounting and dismounting, simplifying maintenance and reducing downtime during part replacement. Constructed from high-grade bearing steel, they deliver wear resistance even in continuous operation, making them ideal for manufacturing facilities where equipment uptime directly impacts productivity.
Precision That Drives Performance
The precision rating of a bearing directly affects machine accuracy and longevity. Our P0-P4 precision grades ensure minimal radial runout and axial clearance, critical for CNC machine spindles and precision printing equipment where even微小偏差 can compromise output quality. The single-row design balances load capacity with structural efficiency, while the open seal type allows for flexible lubrication options—oil, grease, or dry running—adapting to specific operating conditions. Each bearing undergoes rigorous testing to meet industry standards, ensuring consistent performance across batches.
Why Compromised Bearings Cost More in the Long Run
Choosing low-quality cylindrical roller bearings may save on initial costs, but the hidden expenses quickly outweigh the difference. Premature bearing failure leads to unplanned shutdowns, often requiring emergency repairs and replacement of damaged components. Our bearings, backed by a 12-month global warranty, mitigate these risks. We stand behind every unit with defect replacement and refund options, ensuring you only pay for reliable performance. When you factor in reduced maintenance, fewer production interruptions, and longer service life, the total cost of ownership becomes significantly lower than with inferior alternatives.
Your Trusted Long-Term Bearing Partner
Since 2005, Jinan Saifan Bearing has served global buyers across Europe, America, Southeast Asia, and the Middle East, building a reputation for stable supply and competitive pricing. Our vertically integrated production model—from raw material selection to final inspection—gives us control over every step of the manufacturing process. We offer free technical guidance to help you select the right bearing for your application, and our responsive after-sales team ensures prompt support when you need it. With free samples available (buyer covers freight) and flexible payment options including T/T, credit card, and Alibaba trade assurance, we make sourcing industrial bearings straightforward and secure.
Packaging & Shipping
- Secure carton packaging with pallet reinforcement for bulk orders, ensuring protection during transit
- 3–5 days sample lead time for testing and validation
- 5–15 days bulk delivery for standard items, with expedited options available for urgent needs
- Global shipping via trusted carriers; tracking information provided for full transparency
- 1pc minimum order quantity for standard items, supporting both emergency repairs and small-batch production
Get Your Industrial Bearings Shipped Fast
Don’t let bearing issues slow down your production. Whether you need NJ321, NJ326, NJ328, or other cylindrical roller bearings, we have the inventory and expertise to fulfill your order quickly. Send us your bearing designation, application details, and quantity today—our team will provide a quote within 24 hours, helping you get back to full operation with minimal delay.
Frequently Asked Questions
Q: Are these bearings authentic and traceable?
A: Yes, we maintain strict quality control throughout production and provide full traceability for every bearing. Our ISO9001 certification ensures compliance with international standards.
Q: How do I confirm the right bearing model for my machinery?
A: Provide your equipment model, operating conditions (load, speed, temperature), and required precision grade. Our technical team offers free选型 support to ensure compatibility.
Q: What is your warranty policy?
A: We offer a 12-month global warranty covering manufacturing defects. Defective products will be replaced or refunded at no additional cost.
Q: What is the minimum order quantity?
A: Standard items have a 1pc MOQ, ideal for emergency repairs or small-scale projects. Bulk order discounts are available for larger quantities.
Q: How quickly can you ship after ordering?
A: Samples ship within 3–5 days, and bulk orders within 5–15 days. Contact us for expedited shipping options if needed.
Tags:
Cylindrical Roller Bearings
Cylindrical Roller Bearings for Industrial Use
High Precision Cylindrical Bearings
Industrial Machinery Cylindrical Bearings
NJ321 Bearings
NJ326 Bearings
NJ328 Bearings
P0-P4 Precision Bearings
