-- SKF Authorized Engineering Partner
Keep your motor running smoothly with our high-quality China Tapered Roller Bearing—designed to deliver reliable performance and extended service life. These bearings handle radial and axial loads with precision, reducing downtime and maintenance costs for your equipment.
15+ Certified Engineers On-Call
Free application analysis · Failure diagnosis · Custom modification guidance. Response within 24 hours.
| Parameter | Details |
|---|---|
| Bearing Type | Cylindrical Roller Bearing |
| Model Number | NJ408, NJ408-XL-M1, NJ408-XL-M1-C3, HJ408 |
| Outer Dimension | 35mm-180mm |
| Specification | 40*110*27 mm |
| Material | Bearing Steel, Chrome Steel, Ceramic, Nylon |
| Cage | Iron Cage/Brass Cage/Nylon Cage |
| Load Direction | Radial Bearing |
| Separated | Separated |
| Precision Rating | P0, P6, P5, P4, P2 |
| Aligning | Non-Aligning Bearings |
| Spherical | Non-Aligning Bearings |
| Seals Type | Open |
| Lubricate | Oil, Grease, Dry |
| Vibration | V1, V2, V3, V4 |
| Rows Number | Single/Double/Four Rows |
| Structure | Cylindrical |
| Standard | DIN, GB, ISO, JIS |
| Weight | 1.3kg (Package Gross Weight) |
| Package Size | 12cm×12cm×3.7cm |
| Transport Package | Carton, Pallet |
| Origin | China |
| Service | OEM, ODM |
| Industry | Typical Applications |
|---|---|
| Motor | Electric motor drive systems, rotating shafts |
| Industrial Machinery | Conveyors, pumps, gearboxes |
| Automotive | Transmission components, wheel hubs |
| Steel Metallurgy | Rolling mill equipment, processing lines |
| Automation Equipment | Robotic arms, precision motion systems |
Many buyers face the frustration of mismatched bearing dimensions causing installation delays, or low-quality bearings failing prematurely with excessive noise and vibration. Sourcing from multiple suppliers for different brands and models only adds to the complexity, wasting valuable time that could be spent on core operations.
Our cylindrical roller bearings, including models NJ408, NJ408-XL-M1, and HJ408, address these challenges with ISO 9001-certified production processes and a comprehensive inventory that covers both our own brand and major international standards. Designed for radial load applications in motors, these bearings feature separated inner and outer rings for easy mounting and dismounting, a critical advantage during maintenance or replacement.
Ideal for motor shafts and industrial machinery where radial loads are primary, these cylindrical roller bearings operate efficiently within a temperature range compatible with standard lubrication options—oil, grease, or dry conditions. The non-aligning design ensures stability in precision applications, while the single, double, or four-row configurations accommodate varying load requirements, making them suitable for both light-duty conveyors and heavy-duty steel mill equipment.
The choice of bearing material directly impacts performance: chrome steel offers excellent durability for general use, while ceramic options reduce weight and heat generation in high-speed motors. Iron, brass, or nylon cages provide flexibility—brass cages excel in high-temperature environments, while nylon cages minimize noise in precision applications. Precision ratings from P0 to P2 ensure compatibility with everything from general machinery (P0) to high-precision automation (P2), with tight dimensional tolerances (40*110*27 mm for the NJ408 series) guaranteeing interchangeability with major international standards.
Investing in quality bearings reduces hidden expenses associated with frequent replacements. A bearing with insufficient precision (e.g., P0 in a high-speed motor) may vibrate excessively, leading to premature wear of adjacent components like gears or shafts. Our bearings undergo rigorous testing—including material hardness checks and dimensional inspections—to meet DIN, ISO, and JIS standards, ensuring they perform as expected over their service life. This reliability translates to fewer production stoppages and lower maintenance costs over time.
Our production facilities adhere to ISO 9001 standards, with strict incoming material inspections and finished product testing for dimensions, hardness, and surface treatment. We stand behind our bearings with a warranty against manufacturing defects, and our ability to source from a wide range of brands—including both our own BDL and international models—means we can fulfill orders for specific brand requirements. With a production capacity of 1,000,000 units annually, we maintain sufficient stock to meet delivery times of 3-10 days, depending on order quantity.
Whether you need the NJ408 series for a motor application or require a specific brand/model, provide us with your bearing dimensions (d x D x B), quantity, and target delivery date. Our team will quickly confirm availability and provide a competitive quote, ensuring you get the right bearings when you need them.
Q: Do you supply bearings from other international brands?
A: Yes, we offer a full range of bearings including major international and domestic brands. We can source specific models according to your requirements.
Q: How can I confirm if this bearing fits my equipment?
A: Provide your equipment’s bearing dimensions (inner diameter d, outer diameter D, width B) or model number, and our technical team will verify compatibility with the NJ408 series or recommend alternatives.
Q: What is your warranty policy?
A: We provide a warranty against manufacturing defects. Specific terms are outlined in each order contract, covering replacement or refund for non-conforming products.
Q: What is the minimum order quantity?
A: We support low minimum order quantities, suitable for both small-scale repairs and large production runs. Contact us for details based on your specific model and quantity.
Q: How long does shipping take?
A: In-stock items ship within 3-10 days. For large orders or custom specifications, lead times may vary and will be confirmed during the quoting process.
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Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.
In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.
Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.
Dedicated account managers and reliable delivery networks ensure on-time supply for enterprise clients worldwide.
Performance Metrics
35%
Failures Prevented
70%
Downtime Reduction
25+
Years Experience
24h
Quote Response
78% of large enterprises prefer suppliers offering integrated technical support and lifecycle services.
Custom bearing selection and system design based on your specific load conditions, speeds, temperatures, and environmental factors.
Root-cause investigation of bearing failures using metallurgical testing, vibration analysis, and operating data review.
IIoT-enabled monitoring with smart sensor bearings for real-time vibration, temperature, and RPM tracking.
Modified bearings with special coatings, seals, tolerances, or materials. Lead time 8-12 weeks from official channels.
Certified engineers available for on-site installation support, alignment checks, and commissioning assistance worldwide.
Long-term service agreements including regular maintenance checks, replacement scheduling, and performance reporting.
Free samples available for orders over $50K
Validated against your KPIs before full production commitment.
-- Get In Touch
Our certified engineers will review your application requirements and provide a detailed quote within 24 hours.
Address
No. 377 Bansongyuan Road, Huangpu District, Shanghai, China
Free Sample Program
Orders over $50K qualify for free product samples
Test against your KPIs before full production commitment. Ask our engineers for details.
Regarding: China Tapered Roller Bearing 30202 30303 32204 32304 32004X High Quality Low Price for Motor
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