SKF 7311 BECBJ bearing is a single-row angular contact ball bearing, designed especially to withstand combined loads (both axial and radial loads), and is suitable for applications requiring high accuracy and reliable operation.
The product designation “7311 BECBJ” contains several technical details:
- 7311: Dimensional designation – the bearing has a 55 mm bore diameter, a 120 mm outside diameter and a width of 29 mm.
- BE: Indicates an internal design with a 40° contact angle, allowing it to carry high axial loads.
- CB: Standard internal clearance.
- J: Has a steel cage, which positions the balls effectively and reduces friction.
2. Key features of the SKF 7311 BECBJ bearing
✔ 40° contact angle
provides better axial force transmission and is suitable for applications with high axial loads, such as electric motors, machine-tool spindles and gearboxes.
✔ High combined-load capacity
The 7311 BECBJ bearing can carry both radial loads and axial loads in one direction. When mounted in pairs, it can carry axial loads in both directions.
✔ High rotational speed
The optimized design reduces friction, allowing the bearing to operate at high speed while maintaining stability.
✔ High-quality SKF material
The bearing is manufactured to SKF’s strict quality standards. SKF is a leading Swedish bearing brand, ensuring outstanding durability and service life.
✔ Flexible arrangements
It can be used individually or arranged in sets (back-to-back or face-to-face) to increase load capacity and stability.
3. Technical specifications of the 7311 BECBJ bearing
| Parameter | Value |
| Bore diameter (d) | 55 mm |
| Outside diameter (D) | 120 mm |
| Width (B) | 29 mm |
| Contact angle | 40° |
| Cage type | Pressed steel cage (J) |
| Basic dynamic load rating (C) | ~59,000 N |
| Basic static load rating (C0) | ~43,000 N |
| Limiting speed | Up to 8,000 r/min |
| Approximate weight | ~1.45 kg |
Note: Specifications may vary by production batch and specific operating conditions.
4. Applications of the SKF 7311 BECBJ bearing
With its superior design, the 7311 BECBJ bearing is widely used in many industries:
- Machine tools: Spindles, lathes, milling machines and grinding machines, etc.
- Electric motors: High-speed and industrial motors.
- Pumps and compressors: Efficient torque transmission and axial-load capacity.
- Gearboxes and drives: Cement, metallurgy, mechanical manufacturing and other industries.
- Wood, plastics and packaging industries: Requires high rotational speed and accuracy.
5. Advantages of choosing genuine SKF bearings
- 🔧 Outstanding quality: ensures long service life and reduces failures and damage.
- 🔧 Stable operation: reduces vibration, noise and friction.
- 🔧 Easy installation and replacement: Compatible with international standards.
- 🔧 Lower maintenance costs: Fewer replacements and less servicing.
6. How to identify genuine SKF 7311 BECBJ bearings
To ensure that you purchase a genuine SKF quality product:
- ✅ Buy from an authorized SKF distributor or reputable supplier.
- ✅ Check the QR code or SKF Authenticate identification code on the packaging.
- ✅ Use the SKF Authenticate app to verify the product origin.
- ✅ Inspect the box, anti-counterfeit label and sharply laser-engraved SKF logo on the bearing.
7. Where to buy SKF 7311 BECBJ bearings from a trusted source?
You can purchase SKF 7311 BECBJ bearings from authorized SKF dealers or reputable industrial-equipment distributors in Vietnam.
Prioritize suppliers that offer:
- Clear VAT invoices.
- Expert technical advice.
- Full warranty and after-sales support.
Contact us for advice on selecting bearings, lubrication solutions and condition monitoring best suited to your factory system.
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