Has two inner rings, the two inner rings are connected together by the clamping ring, can not be separated, the outer ring has a middle guard, can bear two-way axial load, used as a positioning bearing. Due to the large distance between the two rows of rollers, it can also withstand the overturning moment. The outer ring surface has two stop slots, which can be positioned axially. The bearing is equipped with contact sealing rings on both sides and is loaded with lithium grease. The operating temperature is limited to -40℃ ~ +80℃. Under certain conditions, this type of bearing does not need maintenance, but when there is water vapor or pollution in operation, and often at medium or high speed, lubrication must be supplemented. In the use of oil lubrication, it is necessary to remove the sealing ring, and clean the grease in the bearing, the use of oil lubrication when the rotary increase by 30%.
NNC/SL01 series full loaded cylindrical roller bearings
NNC/SL01 series fully loaded cylindrical roller bearings, for the non-sealed bearing, the outer ring is a whole split type, and by the connection lock plate fixed together, so the outer ring can not bear the axial load, the outer ring is exactly the same after the split, each with a guard, can be used for two directions of axial positioning. The inner ring has three guards. The outer ring has an oil groove and three lubricating holes. This series of bearings are usually lubricated by oil.
NNCL/SL02 series full loaded cylindrical roller bearings
NNCL/SL02 series full cylinder roller bearing, no seal bearing, outer ring without guard, with oil groove and three lubrication holes. The inner ring has three guards. A fixed ring is installed in the center of the outer ring between the two rows of rollers, which can prevent the roller from falling out and keep the bearing as one. This series of bearings can allow a certain axial displacement between the shaft and the bearing seat to occur in the bearing. Because can be used as a floating end bearing.
NCF... Type V/SL18 full cylindrical roller bearing
NCF... V/SL18 full-loaded cylindrical roller bearing, the outer ring has a single guard, no guard side has a lock ring, can be one-way positioning of the shaft, bearing internal axial clearance "S" to ensure that the shaft relative to the bearing box axial positioning shift.
NJ... Type V/SL19 full cylindrical roller bearing
NJ... V/SL19 full-loaded cylindrical roller bearing, used for extremely heavy load and low speed occasions, with self-locking roller group, even if the inner ring is removed, the roller will not be scattered, so the bearing is easy to install and disassemble, can bear one-way axial load, one-way positioning. Full cylindrical roller bearings shall have dimensional tolerances and geometric deviations in accordance with GB/T307.1-94(ISO492-1994) class P0 tolerance and normal original radial clearance CO, or bearings with C2 to C4 original radial clearance may be required. However, the corresponding suffix should be added after the bearing code when ordering. The rubber and plastic screw extruder generally uses C3 group clearance. Fit tolerance can refer to the selection principle of bearing seat tolerance and shaft tolerance limit selection principle. The bearing is allowed to bear a certain axial load. Adequate lubrication is a prerequisite for bearing axial loads. Unidirectional positioning bearings and retaining edges of positioning bearings bearing axial loads must be fully supported. Installation and disassembly, when installing or removing cylindrical roller bearings must pay special attention, installation or disassembly force can not be directly through the cylindrical roller and ring guard edge to transfer