NTN 5S-BNT209 angular contact ball bearing

NTN 5S-BNT209 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-BNT209 and any equivalents.

For machine tool spindles and other setups that combine radial and axial loads in one direction, NTN's BNT series angular contact ball bearings deliver the rigidity and running accuracy the job calls for. Their angular contact geometry supports tight fits and preload, which helps the assembly hold its precision over time. We supply these bearings to maintenance and purchasing teams across the United States and Latin America, quoting by part number through WhatsApp or email.

Reading a BNT part number starts with the prefix and suffix. Take 5S-BNT000 and 5S-BNT001: the 5S prefix signals special characteristics such as cage type or heat treatment, while the final digits separate sizes and configurations in the same family. The BNT2 group covers angular contact bearings with their own dimensions and capacities. Matching the number to the application and its load conditions is the first step in getting the right bearing.

You will find BNT bearings in metalworking, automotive, aerospace and machine tool work. Typical homes include milling machine spindles, grinding machines, machining centers and measuring equipment, plus high-pressure pumps, compressors and gearboxes that must take axial load in a single direction. High-speed running with preload suits them to jobs where dimensional precision is critical.

Selection comes down to three things: the direction of the axial load, the rotational speed and the rigidity required. Mounting follows the contact angle, usually in opposed pairs when axial loads act in both directions. Grease or oil lubrication, sealing against contaminants and accurate shaft-to-housing alignment all help the bearing reach its expected service life.

BNT series bearings can be replaced by equivalents from other makers that share the same dimensions and capacities, but tolerances and internal clearance can differ from one manufacturer to another. Always compare the complete part number and the technical specifications before substituting. If anything is unclear, send us the number and our team will help you confirm the equivalent.

To get a quote, message us on WhatsApp or by email with the exact part number. We reply promptly, suggest equivalents when needed and assist with selection and mounting so your equipment runs as intended.