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 |
| Origin |
Jiangsu China |
Application Industries
| Industry |
Typical Equipment |
| Industrial Manufacturing |
Machine Tools, Gearboxes |
Prevent Costly Downtime with 3309-D-Ma Double Row Angular Contact Ball Bearing P4
Production lines grinding to a halt due to bearing failure isn’t just an inconvenience—it’s a financial drain. When gearboxes or machine tools seize, every minute of downtime eats into profits. Sourcing high-precision bearings that meet exact specifications often means navigating minimum order quantities that don’t align with urgent repair needs, or waiting weeks for delivery. For manufacturers relying on consistent performance, these challenges can disrupt operations and erode competitive edge.
High-Precision 3309-D-Ma Bearings for Critical Machinery
The Double Row Angular Contact Ball Bearing 3309-D-Ma addresses these pain points with P4 precision grade, designed to deliver reliable performance in gearboxes and machine tools. Our production capabilities, honed over decades in the industry, ensure we can meet both standard and custom requirements without compromising on quality. With advanced manufacturing equipment and strict quality control processes, this bearing is engineered to minimize vibration, reduce noise, and extend service life—critical factors for maintaining operational efficiency in high-demand industrial settings.
Engineered for Demanding Operating Conditions
This Double Row Angular Contact Ball Bearing excels in applications where radial and axial loads act simultaneously, such as high-speed gearboxes and precision machine tool spindles. Its angular contact design allows for precise alignment, while the double row configuration provides increased rigidity and load-carrying capacity. Whether operating under continuous heavy loads or rapid speed fluctuations, the 3309-D-Ma bearing maintains stability, ensuring consistent performance even in the most challenging industrial environments.
Key Technical Features Driving Performance
The 3309-D-Ma’s P4 precision rating ensures minimal geometric deviations, critical for reducing vibration and noise in high-speed applications. This level of accuracy directly translates to smoother machine operation and extended equipment life. The bearing’s cage options—steel, copper, or nylon—offer flexibility to match specific application needs: steel cages provide durability for heavy loads, copper cages excel in high-temperature environments, and nylon cages reduce friction and noise in precision machinery. Additionally, the use of high-grade bearing steel enhances wear resistance, ensuring the bearing maintains performance over extended service intervals, even under demanding conditions.
Why Authenticity Matters for Total Cost of Ownership
Opting for non-genuine bearings may seem cost-effective initially, but the hidden expenses quickly add up. Counterfeit bearings often fail prematurely, leading to unplanned downtime, expensive repairs, and potential damage to surrounding components. In contrast, our 3309-D-Ma bearing adheres to strict quality standards, including ISO industrial specifications, ensuring reliable performance and reducing the risk of unexpected failures. By investing in authentic, high-precision bearings, manufacturers lower their total cost of ownership through fewer replacements, reduced maintenance, and uninterrupted production.
Our Commitment to Reliability and Service
With over 18 years of experience in bearing manufacturing and export, Jinan Saifan Bearing Co., Ltd combines technical expertise with a customer-focused approach. Our ISO 9001:2015 and ISO 14001 certifications underscore our commitment to quality management and environmental responsibility. We support flexible order requirements, including a 1-piece MOQ for standard bearings, ensuring you get the exact quantity needed without excess inventory. Our professional R&D and QC teams conduct rigorous testing—from raw material inspection to dimensional and performance checks—to guarantee consistent quality. For distributors and wholesalers, we offer free samples (freight borne by the customer), allowing you to verify performance before placing bulk orders. Plus, our 12-month warranty and responsive after-sales support provide peace of mind, ensuring any issues are resolved promptly to minimize operational disruptions.
Packaging & Shipping
- Standard packaging: Carton with pallet for secure transportation
- Sample order delivery: 3-5 working days
- Bulk order delivery: 5-15 working days
- Multiple logistics options available to meet global delivery needs
- 1 piece MOQ for standard bearings, supporting emergency repair requirements
Secure Your 3309-D-Ma Bearing Today
Don’t let bearing issues slow down your production. Whether you need a single unit for an urgent repair or bulk quantities for scheduled maintenance, we can fulfill your order quickly and reliably. Send us your specifications, including quantity and application details, and our team will provide a prompt quote to help you get back to full operation.
Frequently Asked Questions
Q: Is this bearing authentic and traceable?
A: Yes, our bearings are manufactured in-house with strict quality control processes. Each product meets ISO standards and can be traced through our production and testing records.
Q: How can I confirm if the 3309-D-Ma is compatible with my equipment?
A: Provide your equipment model, load requirements, and operating conditions. Our technical team will verify compatibility and offer free selection guidance to ensure optimal performance.
Q: What is the warranty policy for this bearing?
A: We offer a 12-month warranty from the date of delivery. Defective products confirmed by our quality inspection will be replaced free of charge or refunded.
Q: What is the minimum order quantity for the 3309-D-Ma?
A: The minimum order quantity for standard bearings is 1 piece, making it suitable for emergency repairs or small-scale needs.
Q: How long does it take to ship an order?
A: Sample orders are shipped within 3-5 working days, and bulk orders within 5-15 working days, depending on quantity and specifications.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
