Needle roller bearing SKF BK 1212

SKF BK 1212 is a needle roller bearing reference, within Bearings. Request a quote for BK 1212 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The SKF BK series needle roller bearing is a radial bearing with a steel cage and a very small cross-section, designed for spaces where a ball bearing will not fit. It is used in transmissions, pumps, machine tools and low-speed equipment with high radial loads. Because it has no inner ring, the raceway is ground directly on the shaft, which simplifies the assembly and saves space. MR Accesorios Industriales supplies this line with technical advice so you can choose the right size.

The BK series designation reads as a size code: the letters identify the design type and the numbers that follow indicate dimensions in millimeters. For example, BK 1212 corresponds to a bearing with 12 mm bore needles and 12 mm width. The numeric suffix is not an arbitrary serial number: the first pair of digits gives the shaft diameter and the second gives the overall width. For other sizes in the same category, the logic holds, so the code lets you anticipate whether it will fit in the housing.

This type of bearing is found in gearboxes, oil pumps, compressors, textile machines, packaging equipment and chain or belt drives. In Argentina it is seen in maintenance of older machines and in new builds where radial space is critical. It also appears in power tools, conveyor rollers and agricultural equipment. Its ability to withstand high radial loads with a small outside diameter makes it useful when bushings must be replaced or when the shaft cannot be machined for a bearing with an inner ring.

To select correctly, check that the hardness and roughness of the shaft are suitable, because the raceway is the shaft itself. Mounting is done with a light interference fit in the housing and controlled radial clearance; press cold or with moderate heating, and never strike the needles. Lubrication can be grease or oil depending on the closure: if the bearing has no seals, external radial shaft seals must be provided. Alignment between shaft and housing must be careful so as not to load the edges of the needles.

As for equivalents, needle roller bearings are identified by their main dimensions: bore, outside diameter and width. Different brands may use their own prefixes or suffixes, but if those three dimensions match, interchange is possible. It is not enough for the code to be similar: tolerances, cage type and whether or not it has an inner ring must be compared. If in doubt, send us the shaft and housing dimensions and we will help you find the equivalent reference.

MR Accesorios Industriales supplies SKF bearings and other power transmission lines. If you need the BK 1212 or want to confirm the equivalent from another brand, write to us on WhatsApp with the code or the dimensions. We will reply with the alternative and the corresponding quote.

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