Application and application of cylindrical roller bearings
A lot of cylindrical roller bearing Luoyang Longma Bearing Co. Ltd. cylindrical roller bearing type, according to the structure, N, NF, NJ, NU, NUP, NCL, RN and RNU. There are normal and reinforced cylindrical roller bearings to be distinguished by load capacity. The shape dimension of reinforced cylindrical roller bearings is identical with that of the common type, but the roller diameter, length and quantity are increased, so the load capacity is increased. Single column and multi column cylindrical roller bearings are distinguished by the number of columns in cylindrical roller. Cylindrical roller bearing is divided into four row cylindrical roller and cylindrical roller radial, high bearing capacity, but can not bear the axial force, radial small size, high speed limit, because without inner ring ribs can be installed so that the inner and outer components respectively (with a full set of roller and cage). This kind of bearing has many advantages such as large radial bearing capacity, high rotating accuracy, easy installation and disassembly. The utility model is suitable for working rolls or supporting rolls of various hot and cold mills, blank mills, etc.
The swing of the load or non directional load third load, load ring radial load synthesis direction is uncertain, it is characterized by the synthesis of cyclic radial load vector raceway role, in a certain area within the impact load, vibration, load, its direction is swinging, and to take a certain area, or load effect in the bearing, load change frequently. To bear the bearing swing, the outer ring and the circumferential bearing shall be in close cooperation with each other. The usual methods for adjusting the radial gap of full cylindrical roller bearings are as follows: 1. The gap between the cylindrical and elliptical bearings can be adjusted by hand grinding or by adding the cushion in the bearing and turning and repairing. 2, the cylindrical and oval bearings of the top gap, can be used by hand scraping or when circumstances permit, in the bearing in the surface plus pad method adjustment. 3, for multi oil wedge type bearing bush, in principle, it is not allowed to repair and adjust the bearing clearance. When the gap is not suitable, the new tile should be replaced. 4, the wedge tilting bushing of oil is not allowed, shaving pad is not appropriate, the gap should be replaced in due course. Pad with adjustable thickness, can adjust block behind the tile and stainless steel pad, or thinning adjustment method of block thickness adjusting tile volume. Pay attention to the wedge tilting bushing of oil, the same group of tile thickness error should be less than 0.01mm.
Cylindrical roller bearings can be classified as PO, P6, P5, P4 and P2. according to their accuracy levels, ranging from low to high in order of magnitude.Method for adjusting radial clearance of cylindrical roller bearing:The selection of cylindrical roller bearings and easy automation selection Daquan can provide a fixed load, radial load on the synthesis load from the local ring raceway of the fixed ring is exposed, and transmitted to the shaft or bearing the corresponding local. This load is characterized by radial load vectors that are relatively static synthetic and ring. Withstand load rings can be used relatively loose. The rotary load is full cylindrical roller bearing ring radial load on the synthesis of drum rotation along the circumferential direction of the rotating parts, such as rotation, the burden, it is a combination of vector ring radial load to bear rotation. In close cooperation with the rotating ring load, under special circumstances, such as load, low speed is elected, light or heavy loads, only occasionally ring, bearing with hard material and high surface roughness, the rotating load bearing ring can also be used to loose.
