-- SKF Authorized Engineering Partner
Ensure smooth, reliable machinery performance with precision-engineered taper roller bearings designed to handle radial and axial loads effortlessly. Our 3780/20 3780/3720 model features a separated structure for easy installation and maintenance, paired with P0-P2 precision ratings to minimize vibration (Z1V1-Z3V3) and extend equipment lifespan.
Trusted by industry professionals, these bearings from BDL (or other international brands) offer OEM/ODM flexibility to keep your operations running at peak efficiency.
15+ Certified Engineers On-Call
Free application analysis · Failure diagnosis · Custom modification guidance. Response within 24 hours.
| Parameter | Details |
|---|---|
| Model Number | 3780/20, 3780/3720 |
| Cage Material | Iron, Brass, Nylon |
| Precision Rating | P0, P6, P5, P4, P2 |
| Service Options | OEM, ODM |
| Row Configuration | Single, Double, Four Rows |
| Structure Type | Taper |
| Alignment Feature | Non-Aligning Bearing |
| Vibration Class | Z1V1, Z2V2, Z3V3 |
| Lubrication Method | Grease or Oil |
| Seals Type | ZZ, 2RS, Open |
| Separable Design | Separated |
| Rolling Element | Roller Bearings |
| Load Direction | Radial Bearing |
| Outer Dimension Range | 35mm-180mm |
| Specification | 50.8*93.26*30.30 mm |
| Origin | China |
| HS Code | 8482200000 |
| Industry | Typical Applications |
|---|---|
| 工程机械 | 液压系统，关节连接 |
| 钢铁冶金 | 轧机设备，输送机械 |
| 自动化设备 | 精密传动部件 |
| 矿山机械 | 重型负载设备 |
Finding the right taper roller bearing for your equipment can feel like navigating a maze of incompatible dimensions and questionable quality. Many buyers face downtime from bearings that fail prematurely due to imprecise manufacturing or incorrect load ratings. Sourcing from multiple suppliers just to compare options only adds to the frustration.
Our 3780/20 and 3780/3720 taper roller bearings address these challenges with ISO 9001-certified production processes and interchangeable dimensions compatible with major international standards. Whether you need a single row for light radial loads or four rows for heavy-duty applications like steel mill conveyors, our range covers diverse operating requirements. With options for iron, brass, or nylon cages, you can select the optimal material for your specific environment—from high-temperature industrial settings to corrosion-prone areas.
Designed specifically as radial bearings, this series excels in applications where load is primarily directed perpendicular to the shaft. The separable design allows for easy mounting and dismounting during maintenance, while the non-aligning structure performs best in systems with minimal shaft misalignment. Available vibration classes (Z1V1 to Z3V3) let you match bearing precision to your equipment’s sensitivity, reducing noise and extending service life in precision automation setups.
Precision rating directly affects operational consistency—our P2 class bearings deliver sub-micron dimensional accuracy for high-speed applications, while P0 class offers cost-effective performance for general industrial use. The choice of cage material matters too: brass cages withstand higher temperatures up to 120°C, making them ideal for steel mill applications, while nylon cages reduce weight and friction in low-load, high-rpm scenarios. Sealing options include ZZ metal shields for contaminated environments and 2RS rubber seals for grease retention in dusty conditions, ensuring proper lubrication retention regardless of operating environment.
Choosing the right taper roller bearing isn’t just about upfront cost—it’s about avoiding expensive downtime. A bearing with insufficient precision (like a P0 in a high-speed application) can develop excessive clearance within months, leading to vibration, noise, and eventual equipment failure. Our Z3V3 vibration-rated bearings minimize this risk by ensuring uniform rolling element spacing and tight dimensional tolerances. The ability to handle both grease and oil lubrication also adds flexibility, allowing you to optimize maintenance intervals based on your equipment’s operating schedule.
Every bearing undergoes comprehensive testing before shipment, including dimensional verification (50.8*93.26*30.30 mm for standard specifications), surface hardness measurement, and vibration analysis. Our ISO 9001 certification covers the entire production process, from raw material inspection to final packaging. We stand behind our products with a manufacturer’s warranty against defects in materials and workmanship, providing documentation of compliance with international bearing standards.
Whether you need the 3780/20, 3780/3720, or any other taper roller bearing model, we can source or manufacture to your exact specifications. Provide your required dimensions, cage material, and quantity, and our technical team will confirm compatibility with your application before finalizing your order.
Q: Can you supply bearings from other international brands?
A: Yes, we offer a full range of bearing solutions including major international and domestic brands. Specify your preferred brand and model, and we’ll provide competitive pricing.
Q: How do I confirm if this bearing fits my equipment?
A: Provide your equipment model or existing bearing dimensions (inner diameter, outer diameter, width), and our engineering team will verify compatibility with the 3780/20 or 3780/3720 specifications.
Q: What is your warranty policy?
A: We provide a warranty against manufacturing defects. The specific duration and terms are detailed in each sales contract, with coverage for material and workmanship issues.
Q: What is the minimum order quantity?
A: We accept small orders for prototype or maintenance needs. Contact us with your specific requirements for a tailored quote.
Q: How long does shipping take?
A: In-stock bearings ship within 1-2 business days. For custom configurations or large orders, lead times are typically 2-4 weeks depending on specifications.
Q: Do you offer custom bearing solutions?
A: Yes, our OEM/ODM services allow for custom cage materials, seal configurations, and special lubrication to meet unique application requirements.
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.
sales@bearing-solution.com
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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.
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