NSK NAFW 457240 needle roller bearing

NSK NAFW 457240 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 NAFW 457240 and any equivalents.

For compact assemblies that still need to carry radial loads, NSK NAFW needle roller bearings provide a slim profile. The series covers sizes such as NAFW 102220, NAFW 254026, and NAFW 7010060. Because each part number has its own dimensions, always specify the complete code when requesting a quote.

Needle rollers are long and thin compared with standard cylindrical rollers. That design gives the bearing a high radial load capacity while keeping the radial cross-section small, which helps when housing height is limited. Typical applications include gearboxes, transmissions, pumps, machine tools, and other compact mechanisms.

Reading the NAFW code is straightforward once you know the pattern. The digits after NAFW usually split into three groups: bore, outside diameter, and width, all in millimeters. For example, NAFW 102220 breaks down as 10, 22, and 20; NAFW 254026 as 25, 40, and 26. In longer part numbers like NAFW 7010060, one group uses three digits.

Dimensions vary across the series, so bores and widths are not interchangeable. Before replacing a bearing, measure all three dimensions and compare them with both the old bearing and the housing. A poor fit shortens service life because needle roller bearings tolerate little misalignment.

The shaft or raceway surface that the needles run on must meet the hardness and finish specified by the manufacturer. If it does not, wear can accelerate. During mounting, avoid striking the cage or needles, keep the area clean, and lubricate according to speed and temperature.

To request a quote, send the full part number and quantity by WhatsApp or email. Our team replies promptly and can suggest equivalents or help you choose the right bearing.