Angular contact ball bearings are essential components for various machinery, designed to handle significant axial loads alongside radial loads due to their unique contact angle. This makes them particularly valuable in equipment manufacturing, where efficiency and performance are paramount.

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Characteristics and Advantages:

• High Quality Steel - Manufactured with ultra-clean steel that can prolong bearing life by up to 80%.
• Advanced Grease Technology - Utilizing NSK lubricants that enhance grease lifespan and performance.
• High Grade Balls - Ensures a silent and smooth operation, even at elevated speeds.
• Super Finished Raceways - Skillfully honed to reduce noise and optimize lubricant distribution.
• Contact Angles - Available in angles of 15, 25, 30, and 40 degrees.
• Patented Seals - These seals provide excellent resistance against contamination in challenging environments.
• Cages - Offered in a variety of materials such as Polyamide, steel, and brass.
• Quality Assured - Each product undergoes 100% testing to guarantee quality.

The NSK range of Angular Contact Ball Bearings encompasses various types, including double row angular contact ball bearings, four point contact ball bearings, single row angular contact ball bearings, sealed angular contact ball bearings, duplex angular contact ball bearings.

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Angular contact ball bearings, often referred to as spindle bearings, are specifically designed with relieved inner and/or outer ring shoulders. This unique design allows for a larger ball complement, thereby enhancing load capacity, speed, and durability.

The capacity to carry axial loads increases with wider contact angles. This angle is defined as the measurement between the line connecting the ball and raceway contact points and a line perpendicular to the bearing axis.

Key Benefits of Angular Contact Ball Bearings

These bearings support higher operational speeds and better durability. Relieved outer ring shoulders extend the bearing's offset during assembly, allowing for a larger ball complement and stronger cages. As a result, they can operate at higher speeds while maintaining endurance.

For detailed information about retainers and cages, refer to the relevant section in the GRW catalogue.

GRW Angular Contact (Spindle) Bearings

Typically, GRW angular contact (spindle) bearings are single-row ball bearings featuring a shoulder reduction in either the inner or outer ring. They offer nominal contact angles of 15° (C) or 25° (E), adaptable according to required axial loads. Proper orientation of axial load is denoted by a 'V' marking on the outer ring.

These bearings are ideal for precision applications, especially in environments where high loads and speeds are present, such as high-speed machining spindles.

Note: It's crucial to apply the axial load in the indicated direction.

Key Features of GRW Angular Contact (Spindle) Ball Bearings:

• Manufactured with ISO P4 (or ABEC7) quality or better.

• Crafted from corrosion-resistant SV 30 high-grade steel.

• Available with steel or ceramic balls for applications with centrifugal forces.

• Solid retainers made from high-strength materials for enhanced performance.

• Standard contact angles of 15° (C) or 25° (E), with other specifications available as needed.

• Bearings can be matched and ground to specific preload classes (Light, Medium, Strong) or tailored to customer specifications.

• Available with oil, grease, or specialized lubricants.

• Options for open and shielded versions are available.

Matched Bearing Arrangements (also see

duplex bearings

)

• Face to Face    > <       Less stiff (suitable for misalignments)

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• Back to Back   < > <      Stiff (ideal for stability)

• Tandem              < <          Higher axial loads in single direction

Shielded Angular Contact (Spindle) Ball Bearings:

• Non-contact shields do not generate additional torque.

• Standard non-contact shields are Z pressed steel (VZ) combining Viton rubber and steel for durability.

• The small sealing gap between the shield and ring protects against dust contamination.

Open Angular Contact (Spindle) Ball Bearings:

• Standard design features large balls for efficiency and a solid retainer for enhanced capacity.

• The outer ring retains a partial shoulder to hold the bearing in place.

• Retainer with low-profile cross-section is suited for oil injection or mist lubrication.

Handling Angular Contact (Spindle) Ball Bearings

• Keep the bearing in its original packaging until ready for use.

• Ensure extreme cleanliness during assembly.

• Avoid dropping or impacting the bearing.

• These bearings are intended for axial loads in one direction only. The 'V' marking indicates the axial load direction.

• Utilizing appropriate assembly tools will prevent damage to the bearings.

• Duplex bearings with labels (DB), (DF), or (DT) are always packaged in pairs for specified configurations.

• Universally ground duplex bearings can be configured interchangeably and are sold individually for versatility.

• A run-in period at high speeds is suggested for optimal lubricant distribution before application.

For further details on handling GRW precision ball bearings, refer to our precision bearing handling guide.

If you seek comprehensive guidance on GRW angular contact (spindle) bearing specifications, load ratings, and speed limits, consult the latest GRW catalogue or reach out to us directly.

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