NSK 7920A5TRDULP3 (2pcs)

<h2>Product Details</h2> <h3>Description</h3> <p>The NSK 7920A5TRDULP3 is a super precision, single-row angular contact ball bearing from the NSKHPS (High Performance Standard) series. It is engineered for high-speed, high-precision applications such as machine tool spindles, where running accuracy and rigidity are critical. This bearing features a 25-degree contact angle for combined radial and axial load support and is universally ground for easy mounting in pairs.</p> <h3>Specifications</h3> <ul> <li>Manufacturer: NSK</li> <li>Part Number: 7920A5TRDULP3</li> <li>Type: Angular Contact Ball Bearing</li> <li>Series: NSKHPS</li> <li>Bore Diameter: 100 mm</li> <li>Outside Diameter: 140 mm</li> <li>Width: 20 mm</li> <li>Contact Angle: 25 degrees</li> <li>Cage Material: Phenolic Resin</li> <li>Precision Class: P3</li> <li>Arrangement: Universal Duplex with Light Preload</li> </ul> <h3>Label Info</h3> <ul> <li>Model: 7920A5TRDULP3</li> <li>Batch Code A: FG206566A</li> <li>Batch Code B: FG206566B</li> </ul> <h3>Application</h3> <p>Designed for use in high-precision machinery including machine tool main spindles, high-frequency motors, and other high-speed rotating equipment.</p> <h3>Country of Origin</h3> <p>Made in England.</p> <h3>CO2 Impact</h3> <p>By choosing this reused component, you avoid the emission of approximately 1.8 kg of CO2, which is associated with the production of a new steel bearing. This is a sustainable choice for your operations.</p> <h3>Availability</h3> <p>This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.</p> <h3>FAQ</h3> <strong>What does the ‘DUL’ suffix in 7920A5TRDULP3 signify?</strong><br><p>The ‘DU’ indicates a Duplex Universal arrangement, meaning the bearings are matched for mounting in pairs in either back-to-back (DB), face-to-face (DF), or tandem (DT) configurations. The ‘L’ specifies a Light preload for the pair.</p> <strong>What are the handling and installation best practices for a P3 precision class bearing like this?</strong><br><p>P3 (ISO Class 3) is a high-precision class. It is crucial to work in a clean environment, use proper bearing heaters for mounting (do not apply force to the outer ring), and ensure the shaft and housing meet the specified tolerance requirements. Use only clean, specified lubricants.</p> <strong>The cage material is listed as ‘TR’ (Phenolic Resin). What are the advantages and limitations of this material?</strong><br><p>A phenolic resin cage is lightweight, has low friction, and is excellent for high-speed applications as it generates less heat. However, it has a lower operating temperature limit (typically around 120 deg C) compared to steel cages and requires careful handling as it can be more brittle.</p> <p><em>spareparts2day is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.</em></p> <p>Last Update: Friday, March 13, 2026</p>