NTN 5S-7907ADLLB angular contact ball bearing

NTN 5S-7907ADLLB belongs to angular contact ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 5S-7907ADLLB and any equivalents.

The NTN 5S-79 LLB series is a line of angular contact ball bearings built to handle combined radial and axial loads in one direction. With a high-speed design and LLB sealing, they suit machine tool spindles, high-frequency motors and other equipment where rigidity and accuracy matter. MR Industrial Accessories LLC supplies this series to industrial users across the United States and in several Latin American countries.

Reading the series code helps you confirm the right variant. The 5S prefix denotes low-friction seals, the 79 indicates the extra-thin section dimensional series, and LLB identifies the non-metallic seal type. The numeric code sets the size. Depending on the variant, the contact angle is 15° or 25°, which supports high speeds with good axial load capacity.

Typical applications include milling, grinding and machining center spindles, along with high-frequency electric motors, measuring instruments and optical equipment. These are environments where precision and speed are critical, and where the bearing's rigidity and accuracy are put to the test.

Selection should account for axial and radial load, rotational speed and internal clearance. The LLB seal keeps contaminants out and lubricant in, but you should verify its compatibility with the operating environment. Because these bearings are often mounted in pairs, alignment and preload must be set precisely. High-speed grease or oil lubrication is essential to reach the expected service life.

The series follows standard dimensional nomenclature, so equivalents from other brands can be used when tolerances and contact angle match. When replacing, check the complete part number and the mounting conditions. If anything is unclear, our team can help you compare options.

To request a quote, send the complete part number or the dimensions via WhatsApp or email. We reply promptly and can suggest equivalents and help you choose the correct variant for your application.