Introduction TIMKEN SPHERICAL ROLLER BEARINGS
Timken spherical roller bearings exceed industry standards for superior quality and performance and are designed to manage high radial loads, even when misalignment, marginal lubrication, contamination, extreme speeds, or critical application stresses are present. That’s why industries such as power generation, oilfi eld, steel, aggregate, cement, mining and power transmission turn to Timken for a complete line of high-performance spherical roller bearings. Through expertly designed critical dimensions, such as roller and raceway contact geometry and topography, our spherical roller bearings are helping customers increase productivity by reducing downtime and extending maintenance cycles. PRODUCT BREADTH
Timken offers a complete line of spherical roller bearing designs ranging from 25 to 1500 millimeter bore (0.98 to 59.06 inches). Included in this broad portfolio are two fundamental design types: the Type CJ style and Type YM/YMB design.Available in 25 to 200 millimeter bore (0.98 to 7.87 inches), Type CJ-style bearings offer higher load ratings for longer life and incorporate a stamped steel window-type cage. Similar to all spherical roller bearings, the CJ design compensates for dynamic and static misalignment and allows customers to use weldments for housing frames instead of complex castings.Type YM bearings feature precision-machined, roller-riding brass cages and are designed for harsh industrial environments. These bearings offer higher load ratings for longer life. For larger bore sizes, the Type YMB design incorporates an inner-ring, land-riding cage. The YM/YMB design is produced in sizes ranging from 30 to 1500 millimeter bore (1.18 to 59.06 inches). In addition to the CJ and YM/YMB designs, Timken spherical roller bearings can be ordered with several enhancements and modifi cations to extend life and improve performance in specifi c applications. For example, large-bore spherical bearings sometimes operate below the bearing’s published speed rating, causing the cage to push a non-rotating roller across the raceways. This sliding action breaks down lubrication fi lm and can ultimately damage the bearing. To help protect the bearing components, our engineered surfaces coating minimizes skidding and sliding damage, while withstanding small-particle contamination. In some cases, engineered surfaces can extend bearing life by up to fi ve times standard designs, especially in demanding applications like paper and rolling mills. SPHERICAL ROLLER BEARING CATALOG 7 179761_003-1907 7/19/079:15:39PM