TIMKEN SK-8523 adapter sleeve

TIMKEN SK-8523 belongs to adapter sleeve, part of our Bushings and sleeves range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for SK-8523 and any equivalents.

For maintenance teams that need to seat a tapered bore bearing on a cylindrical shaft, the Timken SK adapter sleeve provides the mounting interface. The assembly combines a split tapered sleeve with a lock nut and lock washer; tightening the nut creates the interference fit that holds the bearing and carries the load. This approach avoids machining a taper directly onto the shaft, which keeps installation and removal straightforward.

Reading the code helps when ordering. The SK- prefix identifies the series, and the digits that follow indicate the size: SK-4023, SK-4523 and SK-5023 are three examples, with larger digits corresponding to larger diameters. Because the suffix is not the shaft diameter itself, use the equivalence table to confirm the sleeve that matches both your bearing and your shaft. These sleeves are commonly paired with tapered bore bearings in the 222K and 223K series, among others.

In US plants, SK adapter sleeves show up in power transmission drives, mills, conveyors, pumps and industrial fans. Food processing, cement, mining and oil operations rely on them where bearings must go onto shafts without special machining. Agricultural equipment and continuous-process lines also use them when periodic inspection and disassembly are part of the maintenance routine. MR Industrial Accessories supplies this line to maintenance departments and project teams across the United States and in several Latin American countries.

Selection comes down to three inputs: shaft diameter, the bearing's tapered bore and the fixing style. During mounting, clean the mating surfaces, apply the correct lubricant and tighten the nut with the lock washer following the recommended procedure. Alignment and tightening torque matter because they prevent the assembly from loosening. On equipment exposed to vibration or heavy loads, verify compatibility with the bearing and consider additional seals to shield the fixing area.

Adapter sleeves made by Timken can be exchanged with sleeves from other manufacturers that share the same dimensional standard. When identifying a replacement, compare the complete part number, the shaft diameter and the nut thread. Sleeves carrying the same number are not always identical across brands, so critical dimensions should be validated. MR can help you confirm the right equivalent and steer clear of mounting errors that might harm the bearing or the shaft.