Full Complement Cylindrical Roller Bearings: The torque calculation formula for TIMKEN cylindrical roller bearings is given below. The coefficients depend on the bearing series and are listed in the table below: M= f1 FB dm + 10-7 f0 (v x n)2 /3 dm3 if (vx n) 2000f1 FB dm +160x 10-7 f0 dm3 if (vxn)< 2000 Note that the unit of viscosity is centiStokes. The load (FB) depends on the bearing type, as follows: Radial cylindrical roller bearing: FB = MAX0.8Fa cot domain Fr Table 22. Factors for torque calculation formula bearing type dimension series f0f1. Torque Torque Torque-M Bearing resistance to rolling depends on load, speed, lubrication conditions and inherent characteristics of the bearing. The following formula can similarly calculate the bearing torsion torque. These formulas apply to oil lubricated bearings. Bearing torques for grease or oil mist lubrication are generally lower, although the torque for grease lubrication also depends on the amount and viscosity of the grease. In addition, the formula is based on the assumption that the torsional torque of the bearing has stabilized after the running-in period. Stamped steel cage. The stamped steel cage of TIMKEN cylindrical roller bearings is made of mild steel, and has undergone a series of cutting, forming and perforating processes. This cage has a variety of designs and is suitable for general use of cylindrical roller bearings. The S-type cage of the cylindrical roller bearing is a special design, which is mounted on and guided by the outer ring rib. The beams of this cage are concave, they evenly cut off the rolling elements and keep them on the outer ring. Stamped steel cages can be easily mass-produced and can be used at high temperatures where adequate lubrication is not possible. Machined cage. Machined cages are an option for small cylindrical bearings, sometimes made of brass. The machined cage scheme of full complement cylindrical roller bearings can provide double good performance in severe service. Cages are available in one-piece or two-piece plans. A one-piece plan can be a finger cage as shown in Figure 4, or a standard cage with well ground pockets. - One-piece finger plan and two-piece window cage are found more in the specification of cylindrical roller bearings. They are both roller-guided programs. The one-piece pocket scheme is a good cage for EMA series bearings. Different from the traditional cylindrical roller bow | guide cage, it is an outer ring guide cage, which can reduce the drag on the rolling elements as much as possible, thereby reducing the heat generation and prolonging the service life of the bearing. This one-piece cage also reduces heat and wear by increasing the mobility of the lubricant compared to two-piece designs. Pin cage. The pin cage of the full complement cylindrical roller bearing consists of two metal rings and a set of pins passing through the middle of the rolling elements. This cage is used for large diameter cylindrical roller bearings that cannot be machined with I brass cages. When this scheme is used, the number of cylindrical rollers can usually be increased to improve the bearing capacity.
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