NSK 7018A5TRSULP3

NSK Super Precision Angular Contact Ball Bearing 7018A5TRSULP3

Description

The NSK 7018A5TRSULP3 is a high-performance, super precision angular contact ball bearing from the NSKHPS series. Engineered for applications demanding high accuracy and speed, such as machine tool spindles, this bearing provides exceptional rotational precision and rigidity. Its universal design allows for flexible pairing and mounting configurations.

Specifications

• Bore Diameter: 90 mm
• Outer Diameter: 140 mm
• Width: 24 mm
• Contact Angle: 25 degrees (A5 Suffix)
• Precision: P3 (ISO Class 3)
• Cage Material: PEEK Resin (TR Suffix)
• Arrangement: Single Universal (SU Suffix)
• Preload: Light Preload (L Suffix)
• Series: NSKHPS (High Performance Standard)

Label Info

• Brand: NSK
• Model: 7018A5TRSULP3
• Production Code: EJ207837

Application

This bearing is ideal for main spindles of machine tools, high-speed motors, precision measuring instruments, and other equipment requiring high rotational accuracy at high speeds.

Country of Origin

Made in England.

CO2 Impact

Choosing this reused bearing over a new one prevents the emission of approximately 2.5 kg of CO2, which is comparable to the emissions from driving a standard car for 12.5 kilometers.

Availability

This item is in stock and ready for immediate dispatch. It is new old stock (NOS), in its original sealed packaging. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does the ‘SU’ designation in 7018A5TRSULP3 mean?

The ‘SU’ suffix indicates a ‘Single Universal’ arrangement. This means the bearing is manufactured to such tight tolerances that it can be mounted in any arrangement (back-to-back, face-to-face, or tandem) with another ‘SU’ bearing without requiring specific matching.

Why is a PEEK (TR) cage used in this bearing instead of a standard steel or brass cage?

A PEEK (Polyetheretherketone) cage, designated by ‘TR’ in NSK’s nomenclature, is used for its excellent thermal stability, chemical resistance, and low friction properties. This makes it ideal for high-speed applications, as it reduces heat generation and allows for higher rotational speeds compared to metallic cages.

What is the significance of the P3 precision class for this bearing?

P3 is a high-precision class according to ISO 492 (equivalent to ABEC 7). It specifies very tight tolerances for the bearing’s dimensions, run-out, and geometry. This level of precision is critical for applications like machine tool spindles, where accuracy and rigidity directly impact the quality of the finished workpiece.

Friday, March 13, 2026

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