TIMKEN MB4 lock washer

TIMKEN MB4 is a reference of lock washer, within Bushings and sleeves. Request a quote for MB4 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The TIMKEN MB series lock washer is a locking component placed on the shaft to axially secure bearings and other machine elements. Its design with an inner and outer tab works together with a lock nut to prevent unwanted movement. It is used in equipment where mounting precision and safety are critical, such as gearboxes, pumps and process machinery. MR Accesorios Industriales sells it in Buenos Aires, Argentina.

The MB series designation is read as a sequential numeric code. Each number indicates a different size within the family, and the washer is chosen according to the shaft diameter and the bearing to be secured. It has no additional suffixes in this series: the number alone defines the size. To select the correct one, the code must be cross-referenced with the assembly dimensions.

These washers are used in industries such as food, petrochemical, steel and mining, where bearings work under loads and vibration. They also appear in power transmission equipment, such as gearboxes and couplings, and in machine tools. In Argentina, they are commonly found in plant maintenance and in the repair of imported equipment requiring specific spare parts.

For correct mounting, check that the inner tab of the washer matches the shaft groove and that the outer tab is bent over one face of the lock nut. This ensures the mechanical lock. Lubrication of the assembly and cleanliness of the contact surfaces are key to avoiding premature wear. If the shaft has burrs or wear, it should be repaired before fitting the washer.

Lock washers are standardized components, so equivalents may exist between different brands. However, the critical dimensions — bore diameter, thickness and tab location — must match the original bearing and nut. When requesting a quote, provide the full part number and, if possible, the shaft and bearing dimensions. That way we can tell you the compatible alternative or quote it to measure if necessary.

If you need TIMKEN MB series lock washers, write to us on WhatsApp with the part number or model you are looking for. At MR Accesorios Industriales we will quote it shortly and advise you so the part is the correct one. We can also help you with other locking components and bearings.