Radial shaft seal SKF 50X58X4 HM4 R

SKF 50X58X4 HM4 R is a radial shaft seal reference, within Seals. Request a quote for 50X58X4 HM4 R via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

SKF HM R series radial shaft seals are lip seals designed for rotating shafts. Their function is to retain lubricant and exclude contaminants in gearboxes, pumps, electric motors and reducers. The HM designation indicates a single lip profile with spring, and the final R indicates the outer diameter with coating. They are available in standardized metric sizes, with inner diameters from 6 mm to 15 mm and cross-sections from 2 to 3 mm. They are ideal for confined spaces and moderate speeds.

The designation of these seals follows the format d x D x b followed by HM and a number indicating the lip type, plus the letter R. For example, 6X12X2 HM3 R corresponds to a seal with an inner diameter of 6 mm, an outer diameter of 12 mm and a width of 2 mm, with HM3 lip and R coating. The HM suffix identifies a rubber lip with steel spring, and the associated number (3, 4) indicates variants in the lip geometry. The final R indicates that the outer diameter has a coating layer to improve sealing in the housing.

These seals are used in applications where axial space is limited and reliable sealing is required. In Argentina, they are common in low-power electric motors, small centrifugal pumps, speed reducers, machine tools and transmission equipment. They also appear in household appliances, power tools and centralized lubrication systems. Their compact size makes them suitable for small-diameter shafts, such as those of fans, agitators and precision mechanisms.

To select the correct seal, verify that the shaft and housing diameters match the designation. The lip must rest on a ground and lubricated surface; if the shaft is worn, evaluate a repair sleeve. Lubricating the lip with compatible grease before assembly prevents damage at startup. Alignment between shaft and housing is critical: a misalignment greater than 0.1 mm accelerates wear. The spring maintains contact pressure; do not remove or deform it during installation.

Regarding equivalences, SKF HM R series seals can be interchanged with other manufacturers offering equivalent standardized sizes, such as DIN 3760 or ISO 6194 profiles. However, not all lips are identical: verify the elastomer type (NBR, FKM) and the temperature range before replacing. Dimensional interchangeability does not always guarantee the same performance. If in doubt, consult with the supplier or send a photo of the original part.

To request a quote, send the complete part number via WhatsApp to MR Accesorios Industriales. If you don't have it on hand, provide the shaft, housing and width measurements, and we will help you identify it. We work with the SKF line and other alternatives so you can find the right solution for your equipment.

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