Cylindrical roller and raceway line contact bearings.Large load capacity, mainly bear radial load.Small friction between the rolling body and the rim of the ring, suitable for high-speed rotation.According to whether the ring has retaining edge or not, it can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N and NF, and double row cylindrical roller bearings such as NNU and NN.The bearing is a separable structure with inner ring and outer ring.Need 1208KTV FAG roller bearing, click here
The rolling body is the centripetal rolling bearing of cylindrical roller.The internal structure of cylindrical roller bearing adopts parallel arrangement of rollers, and spacer retainer or isolation block is installed between rollers, which can prevent the inclination of rollers or mutual friction between rollers and effectively prevent the increase of rotating torque.
The cylindrical roller bearing with inner ring or outer ring without retaining edge, the inner ring and outer ring can move relative to each other in axial direction, so it can be used as free end bearing.One side of the inner ring and outer ring has a double retaining edge, the other side of the ring has a single retaining edge of the cylindrical roller bearings, can withstand a certain degree of axial load in one direction.Generally use steel plate stamping cage, or copper alloy car body cage.But some also use polyamide forming cages.
Cylindrical roller bearings can be divided into single row, double row and multi-row cylindrical roller bearings according to the number of columns of the rolling body.The bearing of different structure is also shown in the position design of retaining edge.Among them, the commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: single row cylindrical roller bearings are separable bearings for easy installation and disassembly. Both rings can be fitted tightly. Modified contact lines between rollers and raceway can reduce stress concentration.Double-row cylindrical roller bearing: the double-row cylindrical roller bearing belongs to the swimming bearing, and its separability makes the installation and disassembly very convenient.Both rings can be fitted tightly.Two - row cylindrical roller bearings are almost not allowed to have inclination Angle.
NNF bearings are sealed by contact on both sides.The bearing is filled with grease, the working temperature of the grease is from -50℃ to +110℃, but due to the limitation of the sealing material, the working temperature of the bearing is limited to -40℃ to +80℃.In good working condition, NNF bearing with seal does not need to be maintained. If the bearing is in water vapor or pollution for a long time and runs at medium or high speed, the bearing can be supplemented with lubricating oil groove and lubricating oil hole on the outer ring.
SKF cylindrical roller bearings uses in Large and medium-sized motor, rolling stock, machine tool spindle, internal combustion engine, generator, gas turbine, reducer, rolling mill, vibrating screen and hoisting and transportation machinery
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