Product Specifications
| Parameter |
Details |
| Model NO. |
7311 7312 |
| Separated |
Unseparated |
| Rows Number |
Single |
| Load Direction |
Radial Bearing |
| Material |
Bearing Steel |
| Product Name |
Angular Contact Ball Bearing |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Stock |
in Stock |
| Service |
OEM ODM |
| Transport Package |
Carton Pallet |
| Specification |
80*140*44.4 mm |
| Trademark |
NTN/NSK/NMB/Koyo/NACHI/Timken |
| Origin |
China |
| HS Code |
8482102000 |
| Production Capacity |
1000000 |
Application Industries
| Industry |
Typical Equipment |
| Automobile |
Automotive transmission systems, wheel hubs |
| Metallurgy |
Rolling Mills, steel processing machinery |
| Mine |
Mining equipment, conveyor systems |
Eliminate Downtime with Reliable 7311 7312 Angular Contact Ball Bearings
Equipment failures caused by substandard bearings cost manufacturers thousands in lost production each year. Many buyers struggle with long lead times for precision bearings or inconsistent quality from unknown suppliers. When your rolling mill or automobile production line stops, every hour counts—you need bearings that arrive quickly and perform reliably.
7311 7312 Angular Contact Ball Bearings: In Stock and Ready to Ship
Our Angular Contact Ball Bearings 7311 7312 solve these challenges with immediate stock availability and strict quality control. As an integrated manufacturer with ISO9001 certification, we ensure each bearing meets P0-P4 precision standards, critical for maintaining alignment in automobile and rolling mill applications. With a 1pc MOQ and 3–5 day sample lead time, we support both emergency repairs and bulk production needs.
Engineered for Heavy-Duty Applications
These single-row, unseparated bearings excel in high-load environments like automobile transmissions and rolling mills. Designed to handle radial loads with precision, they maintain stability even under continuous operation. The bearing steel construction ensures durability in mining and metallurgy settings, where dust and heavy vibrations are common. Choosing the right angular contact bearing directly impacts equipment lifespan and maintenance frequency.
Key Technical Features That Matter
The 80*140*44.4 mm specification provides optimal load distribution for industrial machinery. Precision ratings from P0 to P4 allow customization—P4 grade minimizes runout for high-speed rolling mills, while P0 offers cost-effective reliability for standard automobile applications. Grease or oil lubrication flexibility lets you adapt to specific operating conditions, ensuring smooth performance across temperature ranges. The unseparated design simplifies installation and reduces alignment errors during maintenance.
Why Quality Bearings Reduce Total Costs
Low-quality bearings may save money upfront but often fail prematurely, causing unplanned downtime. Our Angular Contact Ball Bearings 7312 and 7311 are manufactured to strict standards, reducing the risk of sudden failures. With a 12-month global warranty, we stand behind every product—defects are replaced or refunded, minimizing your financial exposure. Authentic NSK/INA bearings in our inventory provide trusted alternatives when original equipment specifications are required.
Our Commitment to Your Success
With over 18 years in the industry, we’ve served global buyers across Europe, America, and Southeast Asia. Our full R&D and QC lab ensures each bearing meets international standards before shipment. We offer free technical guidance to help you select the right precision grade and lubrication type for your application. Bulk orders ship within 5–15 days, and we provide free samples (buyer covers freight) to verify performance before full deployment.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- 3–5 day lead time for samples, 5–15 days for bulk orders
- Flexible shipping via T/T, credit card, or Alibaba trade terms
- Real-time order tracking provided for all shipments
- 1pc MOQ available for emergency replacement needs
Get Your Bearings Delivered Fast
Don’t let equipment downtime affect your production schedule. Whether you need a single 7311 bearing for a repair or bulk 7312 units for your assembly line, we have you covered. Send your requirements today and get a quote within 24 hours—stock is limited, and prompt ordering ensures you get the bearings when you need them.
Frequently Asked Questions
Q: Are these bearings authentic and traceable?
A: Yes, we supply authentic NSK/INA bearings and our own Saifan-branded products, all traceable through our quality control system. We can provide certification of authenticity upon request.
Q: How do I confirm if the 7311/7312 model fits my equipment?
A: Provide your equipment model or technical specifications (load, speed, temperature), and our engineering team will verify compatibility at no cost.
Q: What is your warranty policy?
A: We offer a 12-month global warranty. Manufacturing defects are covered by replacement or full refund, with free technical support throughout the warranty period.
Q: What is the minimum order quantity?
A: Standard items have a 1pc MOQ, making us ideal for emergency repairs or small-batch testing before full production orders.
Q: How quickly can you ship?
A: In-stock bearings ship within 3–5 days for samples and 5–15 days for bulk orders. We work with major couriers for fast global delivery.
Q: How can I verify the precision grade of the bearings?
A: Each bearing is labeled with its precision rating (P0-P4). We can provide test reports from our QC lab showing dimensional accuracy and noise levels upon request.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
