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THK LB 304768 AJ bearing

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THK LB 304768 AJ Bearing Details:
Bearing NameLB 304768 AJ
New ModelLB304768AJ
Old ModelLB304768AJ bearing
product ModelLB304768AJ
CategoryLinear Motion Bearing
BrandTHK Bearing
Inner Diameter d ( mm ) 30
Outer Diameter D ( mm )47
Thickness B ( mm )68
THK LB 304768 AJ Bearing   Bearing Size and Drawing:
LB 304768 AJ
THK LB 304768 AJ Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
IKO LB304768OP Bearing304768IKOLinear Motion Bearing
EASE LB304768AJ Bearing304768EASELinear Motion Bearing
IKO LB 304768 Bearing304768IKOLinear Motion Bearing
IKO LB304768AJ Bearing304768IKOLinear Motion Bearing
EASE LB 304768 AJ Bearing304768EASELinear Motion Bearing
IKO LB 304768O P Bearing304768IKOLinear Motion Bearing
THK LB 304768 Bearing304768THKLinear Motion Bearing
IKO LB 304768 AJ Bearing304768IKOLinear Motion Bearing
EASE LB304768 Bearing304768EASELinear Motion Bearing
EASE LB 304768 Bearing304768EASELinear Motion Bearing

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What are the structural components and design advantages of linear motion bearings?
 
Linear motion bearings consist of an outer sleeve, balls or rollers, a cage, and a circulation channel. The steel balls roll between the slider and the guide rail, achieving infinite linear motion through the circulation channel. They offer advantages such as extremely low friction coefficient, smooth motion, high precision, low starting resistance, and the ability to withstand loads in all directions.
 
What are the advantages of linear motion bearings compared to other similar bearings?
 
Compared to sliding guides, the friction coefficient of linear motion bearings is only 1/20 to 1/50, resulting in smoother motion, lower power consumption, and less heat generation. Compared to crossed roller guides, their stroke is unlimited, enabling infinitely long linear motion. Compared to air-bearing guides, they have higher load-bearing capacity, lower requirements for the installation environment, and are more economical.
 
What are the applicable occasions and typical applications of linear motion bearings?
 
These bearings are suitable for automated precision applications requiring high-precision linear guidance, reciprocating motion, and high stability of movement. Typical applications include industrial robot guideways, CNC machine tool feed axes, 3D printer motion mechanisms, medical testing equipment, automated handling devices, precision measuring instruments, and semiconductor manufacturing equipment.

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