Product Specifications
| Parameter |
Details |
| Model NO. |
Double Row Angular Contact Ball Bearing |
| Separated |
Separated |
| Rows Number |
Double |
| Load Direction |
Radial Bearing |
| Material |
Bearing Steel |
| Precision Rating |
P0, P2, P4, P5, P6 |
| Type |
Ball |
| Structure |
Angular Contact |
| Cage |
Steel Cage, Copper Cage, Nylon Cage |
| Lubrication |
Oil Grease |
| Transport Package |
Carton Pallet |
| Specification |
As Your Request |
| Trademark |
SKF |
| Origin |
Jiangsu China |
| Production Capacity |
1000000 |
Application Industries
| Industry |
Typical Equipment |
| Construction |
Excavators, Loaders, Bulldozers |
| Industrial Machinery |
Gearboxes, Reducers, Conveyors |
| Agriculture |
Tractors, Harvesters |
Minimize Downtime with Heavy Duty Double Row Angular Contact Ball Bearing 3218-a for Construction Machinery
Construction machinery operators know the cost of unexpected downtime—each hour of halted work eats into project deadlines and profits. Many face premature bearing failures due to substandard materials or imprecise manufacturing, especially in high-load applications like excavator booms and loader arms. Sourcing reliable bearings often means navigating minimum order quantities that don’t fit urgent repair needs, or waiting weeks for custom specifications.
Engineered for Heavy Loads, Delivered When You Need It
The Heavy Duty Double Row Angular Contact Ball Bearing 3218-a addresses these challenges with its robust design and flexible supply options. As a professional bearing manufacturer with decades of export experience, we support 1 piece MOQ for standard bearings, ensuring you can secure critical replacements without overstocking. Our automated production lines and strict quality control—from raw material inspection to dimensional testing—guarantee consistent performance in harsh construction environments.
Optimized Performance in Demanding Conditions
This Double Row Angular Contact Bearing excels in applications requiring simultaneous radial and axial load handling, such as construction machinery pivots and gearbox shafts. Its double-row structure distributes heavy loads evenly, reducing stress on individual components and extending service life. Whether operating under dust, vibration, or temperature fluctuations, the bearing maintains stability, thanks to high-grade bearing steel and precision machining up to P4 grade.
Key Technical Features That Matter
Precision rating options (P0 to P4) ensure compatibility with everything from general machinery to high-precision equipment, minimizing noise and vibration during operation. The choice of steel, copper, or nylon cages allows customization based on speed and temperature requirements—steel cages offer durability for heavy loads, while nylon cages reduce friction in high-speed applications. Lubricated with high-performance grease, the bearing arrives ready for installation, reducing maintenance time and ensuring immediate reliability.
Why Cutting Corners on Bearings Costs More
Counterfeit or low-quality bearings may save on initial costs, but they often fail prematurely, leading to expensive equipment repairs and project delays. Our bearings meet ISO international standards and undergo rigorous testing, including noise and vibration analysis, to ensure they withstand the demands of construction machinery. With a 12-month warranty and free replacement for qualified defects, investing in genuine Heavy Duty Bearings reduces long-term operational costs and enhances job site safety.
Your Trusted Partner for Bearing Solutions
With ISO 9001:2015 and ISO 14001 certifications, we adhere to strict quality and environmental standards. Our professional technical team provides free guidance on bearing selection, installation, and maintenance, ensuring optimal performance for your specific equipment. We serve customers across Europe, North America, Southeast Asia, and the Middle East, offering multiple payment methods (T/T, Credit Card, Alibaba) and efficient delivery—3-5 working days for samples and 5-15 days for bulk orders.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Flexible logistics options including express (DHL, FedEx) and sea freight
- Real-time tracking provided for all shipments
- 1 piece MOQ for standard bearings, with customized order quantities negotiable
Get Your 3218-a Bearing Today
Don’t let bearing failures delay your construction projects. Contact us with your equipment details, required quantity, and customization needs, and our team will provide a tailored quote within 24 hours. With free samples available for distributors and wholesalers (freight cost borne by customer), you can test performance before committing to bulk orders.
Frequently Asked Questions
Q: Is this bearing a genuine original product?
A: We supply genuine original brand bearings, including NSK, INA, and others, with full traceability and authenticity guaranteed.
Q: How can I confirm if the 3218-a bearing fits my construction machinery?
A: Provide your equipment model, load requirements, and operating conditions, and our technical team will verify compatibility and offer free selection support.
Q: What is the warranty policy for this bearing?
A: All products come with a 12-month warranty from the date of delivery, covering manufacturing defects with free replacement or refund options.
Q: What is the minimum order quantity for the 3218-a bearing?
A: Standard bearings have a 1 piece MOQ, making it easy to source single units for emergency repairs.
Q: How long does shipping take for international orders?
A: Sample orders ship in 3-5 working days, while bulk orders take 5-15 working days, with logistics times varying by destination.
Q: How do you ensure quality control for each bearing?
A: We conduct strict incoming material inspections, full-process production supervision, and comprehensive performance tests in our in-house laboratory, including dimensional detection and noise testing.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
