Select the appropriate bearing type.

Metallurgical gearbox bearings generally use a double row roller bearing assembly to meet the heavy load and high-power power transmission needs. Roller bearings tapered roller bearings, cylindrical roller bearings, aligning roller bearings mainly. Metallurgy gearbox characteristics of the decision of what type of bearing should gear shaft force conditions and various types of bearings. Double row tapered roller bearings have a good radial and axial composite payload capacity, bearing internal clearance adjustable, but also helps to enhance the transmission system rigid, tapered roller bearing is a bearing type metallurgy gear box design priority. Tapered Roller Bearings inadequacies, such as higher prices and do not have self-aligning and anti eccentric ability metallurgical gearbox is also a large selection of other types of bearings, such as aligning or cylindrical roller bearings.

Metallurgical gearbox often mixes different types of bearings in order to achieve the purpose of optimal design. And taper roller bearings compared to lower cost of self-aligning roller bearings, under specific stress conditions, the bearings can withstand axial and radial composite load. Spherical roller bearing the biggest advantages with self-aligning capability, in the eccentric conditions. Bearing similar exterior dimensions, the choice of double row cylindrical roller bearings can achieve higher radial load capacity, but this type of bearing can not withstand the axial load. Compound in the radial and axial load conditions are usually selected cylindrical roller bearings, thrust bearing or other types of bearings to withstand the axial load.

 double row tapered roller bearing combination

A double row tapered roller bearing assembly, one end bearing is usually set to "fixed end" bearing inner ring face are the top tight without leaving any gap, played the axial position and withstand the axial load is applied; the other end of the bearing to floating side, used to absorb the gear axis thermal expansion and accumulation of tolerances. The "floating side bearing to support radial load bearing outer face and the bearing end cap and retaining shoulder should allow sufficient clearance to offset the thermal expansion of the gear shaft axial displacement occurs, the detailed structure shown in Figure 1. In order to improve the delivery torque, a large number of metallurgical gearbox use helical gears meshing manner. Overload conditions, the helical gear is not easy to produce shock and vibration noise, smooth operation and carrying capacity, helical gear in the overloaded transmission conditions better than the direct gear drive.