Lock washer SKF W 21

SKF W 21 is a lock washer reference, within Bushings and sleeves. Request a quote for W 21 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The SKF lock washer W series is a locking component placed between the adjustment nut and the bearing to prevent the nut from loosening due to vibration. Its design with an inner and outer tab allows locking the nut in the desired position. It is used in bearing assemblies mounted on shafts, where tightening safety is critical.

The W series designation is read as W followed by a two-digit number indicating the size. For example, W 00, W 02, W 03, etc. Each part number corresponds to a specific combination of inner diameter and thickness, intended for nuts with different threads. The numeric suffix does not indicate the diameter directly; you must consult the dimension table for each case. At MR we provide the exact equivalence according to the part number you send us.

These washers are used in industries such as food, cement, mining and in maintenance workshops for rotating equipment. They are common in gearboxes, pumps, fans and conveyors, where bearings work under load and vibration. They are also seen in machine tools and continuous process equipment. In Argentina, they are frequently requested for repairs of imported equipment that uses SKF bearings.

To select the correct washer, take into account the shaft diameter, the nut thread and the available space. The inner tab must fit into the shaft groove and the outer tab must be bent over one face of the nut. It is important that the washer has the appropriate thickness so that the nut seats properly. During mounting, verify that the tab is not damaged and that the bend is firm but not excessive. Lubrication of the assembly also influences service life.

Regarding equivalences, other brands manufacture lock washers with similar designations, but they are not always interchangeable. The critical dimensions are the inner diameter, outer diameter and thickness, as well as the position of the tabs. If you need to replace a washer, it is best to compare with the original part or consult with us. We ask for the SKF part number or the measurements to give you the correct option.

If you already have the part number for your SKF lock washer, send it via WhatsApp to MR Accesorios Industriales and we will quote you. If you do not have it, send us the shaft and nut measurements and we will help you identify it. We work with the SKF line and can advise you so that the mounting is secure.

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