Double Row Cylindrical Roller Bearing NNU4952/W33
Double Row Cylindrical Roller Bearing
Part No.: NNU4952/W33
Inner Ring: 260.000mm
Outer Ring: 360.000mm
Width: 100.000mm
Outside Diameter of Inner Ring: 289.000mm
Chamfer: 2.1
Basic Dynamic Load Rating: 981.75KN
Basic Static Load Rating: 2310KN
Limited Speed (rpm): 1512(grease)/2016(oil)
Gross Weight: 29.2kg
Brass Cage, With An Oil Groove and Lubricating Holes
Double row cylindrical roller bearings are divided into bearings with cylindrical bore and tapered bore (add K behind bearing type). This type of roller bearings have compact structure, good rigidity, heavy load carrying capacity, and little distortion under loads. Because of their second row of rollers, double row cylindrical roller bearings are suitable for heavy radial loads. Double row cylindrical roller bearings are applicable for the machine tool spindle. Tapered inner bore could fine adjust clearance, simplify positioning fixture and be convenient to mount and dismount.
Depending on the existence of ribs on their rings, double row cylindrical roller bearings are classified into NN, NNU types.
Type NN double row cylindrical roller bearings have two integral flanges on the inner ring, a flangeless outer ring and a center flange in the middle. Double-row cylindrical roller bearings permit axial displacement in double directions of the housing relative to the shaft.
Type NNU double row cylindrical roller bearings have two integral flanges on the outer ring, a non-contacting inner ring and a center flange in the middle. Double row cylindrical roller bearings permit axial displacement in double directions of the housing relative to the shaft. Therefore, this type of bearing is suitable to be used as non-locating bearings.
- Material: 100Cr6, SKF3, GCr15, SKF3S; - Technical: Seamless , Process: Piercing, Cold Drawing, Spheroidizing Annealing, Annealing etc.; - Size Range: OD 10 ~ 160 mm, Wall thickness: 1~ 25 mm; Length: Customized; - Delivery Condition: (1) +C No heat treatment after the final cold drawing process, (2) +LC After the final heat treatment there is a suitable drawing pass,(3) +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere, (4) +A After the final cold drawing process the tubes are annealed in a controlled atmosphere, (5) +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere; - Application: Widely Used in Bearing Industry and Automotive Parts, such as Hydraulic Cylinder Pipe, Steel ball, roller and collar of large machinery bearing, axis of rotation, blade, stator pump, profiling, sleeve, mandril, etc.; - Features: High and uniform hardness and wear resistance, and high elastic limit.
Airatrex Has Rapidly Established Itself As A Strong, Reliable And Trustworthy Supplier For Wide Range Of Bearings. Ideally Suited To The Engineering, Maintenance And Manufacturing Markets Ball Screw Support Barrel Roller Bearings Cam And Roller Follower Crossed Roller Bearings Cylindrical Roller Bearing Deep Groove | Radial Ball Bearings Double Row Angular Contact Double Row Self Aligning Linear Bearings Plummer Blocks
Bearings for Automotive and Industrial use
PRice - Rs.7.5 Piece Minimum Order Quantity: 50000 Piece Size/Diameter : upto 25mm Inner Diameter : 5 mm Usage/Application : Industrial Shape : Round/Circular Outer Diameter : 20 mm Bush Length : 20mm Finish : Polished Country of Origin Made in India
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Spherical roller bearings have two roller is mainly exposed to the diameter of a load, but also can withstand the axial load any direction. High radial load capacity, especially suitable for the work overload or vibration loads, but can not afford pure axial load. Kind of bearing outer ring raceway is spherical, so the good performance of aligning, can compensate concentricity error. Spherical roller bearings have two rows of symmetrical spherical roller, a common spherical outer raceway, inner ring raceway two bearing axis is tilted at an angle, aligning performance, when the axis of the force bearings can still be used normally when curved or install a different mind-mind with the bearing dimension series generally permissible aligning angle is 1 to 2.5 degrees, the load bearing capacity of the type, in addition to radial loads the outer bearing can withstand two-way axial load, with good impact resistance, in general, self-aligning roller bearings that allow the work of low speed. Neutral industrial packaging
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