NTN NA5912 needle roller bearing

NTN NA5912 belongs to needle roller 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 NA5912 and any equivalents.

Needle roller bearings in the NTN NA series are built for radial duty where mounting space is tight. Each unit includes an inner ring, and the needles are guided by a cage. Because of that design, the bearing can sit directly on a machined shaft and still handle considerable radial force. Machine tools, pumps, transmission assemblies and similar industrial equipment commonly use these bearings when the outside diameter cannot grow. MR Industrial Accessories LLC supplies this series to maintenance and purchasing teams in the United States and Latin America.

Reading an NA code is straightforward. The letters NA mean needle roller bearing with inner ring; the digits that follow identify the size and dimension series. NA59/22, for instance, is an NA59 series bearing with a 22 mm bore. NA497 and NA499 belong to the NA49 series in different sizes, while NA4822, NA4824 and NA4826 come from the NA48 series. Suffixes, when present, point to sealing, cage or tolerance variations. The most reliable way to match a bearing is to provide the full code.

Selection starts with three measurements: bore, outer diameter and width. Confirm them against the code before ordering. Next, decide between open and sealed versions. Open bearings suit oil lubrication; sealed versions hold grease in and keep contaminants out. The cage material, steel or polyamide, affects the permissible speed. During mounting, alignment and shaft fit are critical, and the inner ring needs an interference fit. Use the grease or oil specified for the application, and do not subject the bearing to purely axial loads.

These bearings interchange with other brands that follow the same dimensional designation, including SKF, FAG, NSK and KOYO. What matters is keeping bore, outer diameter, width and cage type consistent. If a competitor's code does not line up exactly, the equivalent can usually be identified from the dimensions or the original part number. Send the data and we will confirm the match.

Typical uses include machine tool spindles, gearboxes, gear pumps, compressors, lifting equipment and agricultural machinery. Support rollers and cam systems also rely on this bearing type. The combination of a low profile and high radial capacity makes it a practical choice wherever axial and radial space is limited.

To request a quote, send the complete bearing code or the shaft and housing dimensions by WhatsApp or email. The team responds promptly, suggests equivalents when needed, and can advise on installation and lubrication for your equipment.