90X135X35mm 81218 Wholesale Heavy Loads Factory Cylindrical Roller Thrust Bearing Thrust Load on Ball Bearing
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| Hardness: | HRC60--62 |
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A thrust cylindrical roller bearing is a type of rolling-element bearing specifically designed to carry axial loads-i.e. forces parallel to the axis of rotation-without providing radial load support. AEC+2FHDBearings+2
These bearings are generally composed of:
Shaft washer (inner race / shaft ring) - mounted on the rotating shaft. NBC Bearings+1
Housing washer (outer race / housing ring) - fixed in the machine housing; provides the mating surface for rollers. NBC Bearings+1
Cylindrical rollers - the rolling elements which transmit the thrust load. Their shape yields line contact, which allows higher load capacity than point-contact elements (like balls) under pure axial loads. NBC Bearings+2FHDBearings+2
Cage (separator) - holds and spaces the rollers uniformly to reduce skewing, friction, and uneven load distribution. NBC Bearings+1
Because of this design, thrust cylindrical roller bearings are usually separable: the washers, cage, and roller assembly can be mounted separately. NBC Bearings+1
Some common design variants include:
Single-direction vs double-direction thrust cylindrical roller bearings - i.e. whether they can support axial load in one direction or both. AEC+1
Single-row vs multi-row rollers. More rows generally increase capacity. AEC+2NBC Bearings+2
Thrust cylindrical roller bearings offer several advantages:
High axial load capacity - they can carry significantly more axial force than many thrust ball bearings of comparable size. NBC Bearings+1
High axial rigidity - due to line contact and the configuration of rollers. NBC Bearings+1
Compact design for axial support - good fit where axial space is constrained and where only axial load, but not radial, needs to be managed. NBC Bearings+1
However, there are trade-offs:
Lack of radial load support - these bearings are not designed to handle forces perpendicular to the shaft axis. If radial loads are present, they must be borne by other components. AEC
Speed limits - line-contact rollers generate more sliding at the roller ends and raceways; thus, at high rotational speeds, frictional losses and heat generation can be more problematic. ISK BEARINGS+1
Assembly and alignment sensitivity - proper mounting, correct alignment of washers and shaft/housing, and lubrication are important for bearing life. Misassembly or misalignment can lead to uneven load, increased wear, or premature failure. Yujie Machinery+1
Thrust cylindrical roller bearings are used in various heavy-duty and axial-load-dominated applications, such as:
Hydraulic machinery and pumps NBC Bearings
Gearboxes and transmissions where axial thrust forces are present FHDBearings+1
Large industrial machinery like steel mills, turbines, mining equipment NBC Bearings+2AEC+2
Wind turbines, compressors etc. when large thrust loads need support and radial loads are minimal or handled separately. NBC Bearings
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