Needle roller bearing NTN 7E-HMK4020

NTN 7E-HMK4020 is a needle roller bearing reference, within Bearings. Request a quote for 7E-HMK4020 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NTN HMK series needle roller bearing is a radial needle roller bearing with cage, designed to withstand high radial loads in very tight spaces. Its compact construction allows it to be mounted directly on hardened and ground shafts, without the need for additional inner rings. It is used in applications where the available radial section is limited and high load capacity is required, such as gearboxes, pumps, compressors and textile machinery. MR Accesorios Industriales sells the HMK series in Buenos Aires, Argentina, with more than 80 years of experience in bearings and power transmission.

The HMK series designation is read as follows: the letters HMK identify the series of needle roller bearings with steel cage, without inner ring. The numbers that follow indicate dimensions: the first two digits correspond to the bore diameter (in millimeters) and the last two to the total width. For example, the 7E-HMK2616 has a 26 mm bore and a 16 mm width; the 7E-HMK3220, 32 mm bore and 20 mm width; the 7E-HMK4025, 40 mm bore and 25 mm width. The 7E prefix indicates a standard execution variant from NTN.

These bearings are used in Argentine industries such as automotive, metallurgy, food and textile. They are common in gearboxes, water and oil pumps, compressors, machine tools and transmission equipment. Their ability to withstand high radial loads with a thin profile makes them ideal for confined spaces. On the local market, they are found in equipment from recognized brands and as spare parts for imported machinery.

To correctly select an HMK bearing, take into account the shaft diameter and the available width. Since they do not have an inner ring, the shaft must have adequate surface hardness and controlled roughness to serve as a raceway. Lubrication can be with grease or oil, depending on the speed and working temperature. It is essential to ensure precise alignment between the shaft and the housing to avoid parasitic axial loads. Mounting is done by pressure or with suitable tools, without directly hammering the rollers.

As for equivalents, NTN HMK series needle roller bearings can be interchanged with products from other brands that follow the same dimensional nomenclature, such as SKF, FAG or NSK, as long as the bore, outer diameter and width dimensions match. However, verify the tolerances and the cage type, since they may vary between manufacturers. For safe interchangeability, it is advisable to consult a specialist and provide the complete part number of the original part.

If you need an NTN HMK series needle roller bearing, at MR Accesorios Industriales we'll quote it for you. Send us the part number or dimensions on WhatsApp and we'll reply shortly. We can also advise you on the proper lubrication and mounting for your application.

This description provides guidance on the product type. Check the configuration and dimensions of this reference.