NSK 7311 BEAT85 55x120x29 - Single Row Angular Contact Ball Bearing

Applications

The NSK 7311 BEAT85 (55x120x29 mm) is a single-row angular contact ball bearing engineered to support combined axial and radial loads with precision and reliability. Its 40° contact angle enables excellent axial load capacity in one direction while maintaining smooth and stable operation at high rotational speeds.

This bearing is widely used in machine tool spindles, gearboxes, electric motors, pumps, compressors, and industrial automation systems. The BEAT85 design from NSK features an optimized internal geometry, ensuring quiet performance, low friction, and extended service life, even under demanding industrial conditions.

Advantages

• High axial load capacity - supports both radial and one-directional axial forces efficiently.

• Optimized 40° contact angle - enhances system rigidity and precision under dynamic loads.

• Reinforced polyamide cage (B design) - lightweight, heat-resistant, and vibration-stable.

• Low noise and smooth operation - perfect for precision machinery and high-speed drives.

• Reliable performance - made from premium-grade bearing steel for maximum fatigue resistance.

Technical Specifications

• Type: Single-row angular contact ball bearing

• Manufacturer: NSK

• Model: 7311 BEAT85

• Dimensions: 55 x 120 x 29 mm

• Contact Angle: 40°

• Cage Material: Reinforced polyamide (PA66)

• Load Direction: Axial (one direction) + radial

• Material: High-grade bearing steel

• Applications: Machine tools, industrial drives, spindles, pumps, and automation units

The 7311 BEAT85 NSK is designed to deliver high rigidity, excellent accuracy, and smooth motion, making it an ideal choice for precision drive assemblies and industrial power transmission systems.

FAQ

1. What does BEAT85 mean in NSK 7311 BEAT85?
It refers to a special NSK angular contact bearing design with a 40° contact angle and a reinforced cage for improved high-speed and axial load performance.

2. Can the NSK 7311 BEAT85 be used in paired arrangements?
Yes. It can be paired in DB (back-to-back), DF (face-to-face), or DT (tandem) configurations for handling axial loads in both directions.

3. What are the most common applications for this bearing?
The 7311 BEAT85 is commonly used in spindle systems, electric motors, gearboxes, pumps, compressors, and industrial automation systems.

4. How does this bearing differ from standard deep groove ball bearings?
Angular contact bearings like the 7311 BEAT85 support higher axial loads and greater system rigidity, whereas standard deep groove bearings are optimized mainly for radial loads.

5. Is the product available for immediate shipment?
Yes, the NSK 7311 BEAT85 is stocked and ready for 24-hour delivery from our Lublin warehouse.