NTN 5S-2LA-BNS917LLB angular contact ball bearing

NTN 5S-2LA-BNS917LLB is a reference of angular contact ball bearing, within Bearings. Request a quote for 5S-2LA-BNS917LLB via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN BNS series angular contact ball bearing is a precision component designed to support combined radial and axial loads in a single direction. It is used in applications requiring high rotational accuracy and rigidity, such as machine tool spindles, measuring equipment and positioning systems. Its construction with balls and oblique raceways allows angular contact that improves axial load capacity. MR Accesorios Industriales sells this line for the Argentine industrial market.

The BNS series designation is interpreted in blocks. The prefix 5S indicates that the bearing incorporates ceramic balls (silicon nitride), which reduces weight and improves high-speed behavior. The 2LA block refers to the seal or protection type: a low-friction seal on both sides. Then BNS appears as the identifier of the precision angular contact series. The number that follows —for example, in 5S-2LA-BNS009LLB or 5S-2LA-BNS016LLB— indicates the size within the series. The suffix LLB defines the seal type and factory lubrication. Thus, each part number combines ball material, seal and size.

These bearings are used in industries that demand precision and reliability. In Argentina, we find them in milling machine, grinding machine and machining center spindles, where dimensional accuracy is critical. They are also used in metrology equipment, rotary tables, industrial robots and high-speed transmission systems. Their ability to support axial loads in one direction makes them suitable for paired arrangements. MR Accesorios Industriales supplies this line to machining shops, automotive plants and machinery factories that need quality components for their production processes.

To correctly select a BNS bearing, take into account the axial load direction, rotational speed and environmental conditions. The 2LA seal protects against contaminants and retains lubricant, but if the environment is very aggressive an additional seal may be required. Internal clearance and preload are adjustable according to the mounting: in spindle applications, light preload is usually used to increase rigidity. Alignment between supports is essential to avoid parasitic stresses. Lubrication can be grease or oil, depending on speed and working temperature. Always follow the manufacturer's recommendations for mounting and commissioning.

Regarding interchange, precision angular contact bearings from other brands can replace NTN BNS if the main dimensions, contact angle, seal type and precision class match. However, diameter and width are not enough: load capacity, clearance and tolerances must be verified. If you have the part number of another brand, we can help you find the NTN equivalent or the compatible alternative. Interchangeability between manufacturers is not automatic; a technical verification prevents premature failures. Consult us with the application data and we'll advise you.

If you need an NTN BNS series angular contact bearing, write to us on WhatsApp with the complete part number or the dimensions of your application. At MR Accesorios Industriales we quote the exact reference and tell you the compatible alternative if applicable. Since 1945, we support Argentine industry with power transmission components and bearings from leading brands. Send your inquiry and we'll reply shortly.