LM8UU Linear Ball Bushing
The lm8uu is a simple model of a linear bearing with an inner diameter of 8mm. This bearing is used on a shaft or rod of the same size. The LM8UU offers a very reasonable price for creating a linear motion.
The following picture shows dimensions for a regular LM8UU:
In the past, rotational bearings were used, but with the need for linear motion, linear bearings were developed. This type of bearing performs back-and-forth motion by sitting on a shaft. Due to the curved surface of the bearing, at least two rods and two bearings are required to create linear motion.
The following image demonstrates the dimensions for different sizes of simple closed linear bearings LM series including LM5UU, LM6UU, LM8UU, LM10UU, etc.:
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