Lock washer BGL MB9A

BGL MB9A is a lock washer reference, within Bushings and sleeves. Request a quote for MB9A via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The BGL MB…A lock washer is a locking accessory placed over the KM nut to prevent it from loosening on adapter sleeves. Its design with a straight internal tab fits into the shaft groove and is bent over the nut, blocking rotation. It is made of carbon steel, with a stainless steel option, and is ideal for mountings where vibrations or variable loads could compromise the fit.

The MB…A designation identifies the MB series lock washers with a straight internal tab. The number that replaces the # symbol indicates the size: MB1A, MB2A, MB3A and so on up to MB8A. Each size corresponds to a specific shaft diameter and KM nut. The A suffix distinguishes this variant from others such as MBL or MBA, which share the same principle but may differ in width or tab type. To select the correct one, the code must be cross-referenced with the KM nut and the adapter sleeve used.

These washers are used in a wide variety of industrial equipment in Argentina. They are found in gearboxes, pumps, fans, conveyors and agricultural machinery, where adapter sleeves with KM nuts are common. They also appear on machine tool spindles and rolling mill shafts. Their function is critical in applications with vibration or dynamic loads, since they prevent the nut from loosening and guarantee that the bearing stays in position.

For correct mounting, first thread the KM nut onto the adapter sleeve and tighten it with the appropriate wrench. Then place the MB…A washer so that its internal tab fits into the shaft groove. Finally, bend one of the outer tabs over one face of the nut to immobilize it. It is important to verify that the washer seats well and that the bend does not interfere with other parts. In corrosive environments, it is best to choose the stainless steel version to extend service life.

BGL MB…A lock washers are interchangeable with those of other brands that follow the KM nut standard. When requesting a quote, it is enough to indicate the full code or the shaft and nut dimensions. If the customer brings in an unidentified washer, at MR Accesorios Industriales we compare it with the MB, MBL, MBA or AW series to offer the equivalent. Interchangeability depends on diameter, width and tab type, so it is always best to confirm these data.

To secure the mounting of your equipment, choose the appropriate BGL MB…A lock washer. At MR Accesorios Industriales we quote the exact code you need via WhatsApp. Send us your KM nut model or the shaft dimensions and we will reply shortly with the option that best suits your application.

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