7215 BM NAF Single Row Angular Contact Ball Bearing 75x130x25

Description

The 7215 BM NAF Angular Contact Ball Bearing is a high-precision single row bearing engineered for applications where combined axial and radial loads occur simultaneously. Its angular contact design (40° contact angle) provides excellent axial load capacity in one direction, ensuring optimal performance in high-speed and high-rigidity environments such as machine tool spindles, gearboxes, and industrial pumps.

The BM designation indicates a machined brass cage, offering superior strength, heat resistance, and stability at high rotational speeds. Compared to steel or polymer cages, the brass version ensures better durability, precise ball guidance, and improved lubrication distribution.

With an inner diameter of 75 mm, outer diameter of 130 mm, and width of 25 mm, this model delivers exceptional running accuracy and reduced friction, even in demanding industrial conditions. Manufactured by NAF, this bearing combines reliability, mechanical strength, and precision manufacturing, making it a trusted component in industrial automation, energy systems, and heavy-duty machinery.

The bearing’s raceways and rolling elements are made of hardened bearing steel, guaranteeing long service life and high load-bearing capacity. It can be used individually or in pairs (O, X, or tandem arrangements) depending on the required load direction and stiffness of the assembly.

Applications

• CNC machine spindles and precision tools

• Industrial gearboxes and reducers

• Electric motors and pumps

• Compressors and blowers

• Agricultural and transport machinery

• General industrial automation systems

This bearing ensures long-term reliability, low vibration, and consistent performance in all these applications.

Technical Specifications

Product Advantages

• ⚙️ High axial load capacity due to 40° angular contact design

• 🛡️ Brass cage (BM) ensures strength and thermal stability

• 🔧 Low friction and high rotational precision - ideal for spindles

• 🧱 Hardened steel raceways for long service life

• 💨 Suitable for high-speed and high-temperature environments

• 🌍 Can be mounted in O, X, or tandem configurations for custom load distribution

FAQ

1. What does “BM” mean in 7215 BM NAF?
It stands for a machined brass cage, offering superior stability and heat resistance.

2. Is the bearing suitable for high-speed spindles?
Yes. Its angular contact design and brass cage make it ideal for high-speed precision applications.

3. Can it handle both radial and axial loads?
Yes. It supports combined loads, with particularly strong axial load capability in one direction.

4. Does it come pre-lubricated?
No, the open design allows flexible lubrication with grease or oil depending on the setup.

5. Can multiple bearings be mounted together?
Yes. It can be used in pairs (O, X, or tandem) for increased rigidity or bidirectional axial load handling.