NTN 7E-HMK2215C needle roller bearing

NTN 7E-HMK2215C is a reference of needle roller bearing, within Bearings. Request a quote for 7E-HMK2215C via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN HMK series needle roller bearing is a compact radial bearing with a very small cross-section, designed to carry high radial loads in spaces where a ball bearing or cylindrical roller bearing will not fit. It is used in applications with oscillating or rotating motion and requires a shaft with suitable hardness and roughness to act as the inner raceway. MR Accesorios Industriales sells the HMK series in Buenos Aires, Argentina.

The HMK series designation is read as a roller and cage assembly without an inner ring: the letters HMK identify the family, and the numbers that follow indicate the shaft diameter and the width in millimeters. For example, 7E-HMK1215C corresponds to a bearing for a 12 mm shaft and 15 mm width; 7E-HMK2215C for a 22 mm shaft and 15 mm width; 7E-HMK2530C for a 25 mm shaft and 30 mm width; and 7E-HMK2830C for a 28 mm shaft and 30 mm width. The C suffix indicates a design variant within the series.

These bearings are used in industries such as automotive, machine tools, transmission equipment, pumps, compressors and agricultural machinery. In Argentina they are commonly found in gearboxes, camshafts, hydraulic pumps and linear guide systems. Their low profile makes it possible to reduce the size of the assembly and increase radial load capacity in a minimal space, which is why they are a common solution when the design calls for high rigidity and little volume.

To correctly select an HMK bearing, take into account the shaft diameter and tolerance, since the shaft acts as the inner raceway: it must have suitable surface hardness and a fine surface finish to prevent premature wear. Lubrication can be grease or oil, and sealing of the assembly is handled by the housing design. Ensuring precise alignment between the shaft and the support is essential, since these bearings are sensitive to angular misalignment.

As for equivalents, NTN HMK series needle roller bearings can be interchanged with references from other manufacturers that follow the same dimensional nomenclature, such as the HK series or similar. It is always advisable to verify tolerances and cage type before replacing a part, because small differences in design can affect performance. If you have another brand's part number, at MR Accesorios Industriales we can tell you the compatible alternative.

To request a quote for the NTN HMK series needle roller bearing you need, send us the full part number via WhatsApp, for example 7E-HMK1215C or 7E-HMK2830C. At MR Accesorios Industriales we reply promptly with the quote and advise you so you can choose the correct variant for your application. We can also help you if you have questions about the designation or the suffix.