The right fit can be loose or tight or somewhere in between, depending on the application.
Linear bushings and shafts were practically made for each other, and often times they are. Together, they are commonly used in motion control and linear motion devices for the smooth motion and accuracy they can provide. The fact they are also relatively inexpensive and durable adds to their appeal. But engineers and designer can run into difficulties when looking for shaft and linear bushings that will work together to provide the performance needed for specific applications.
Download this guide and review Basics of Getting the Right Fit between Linear Bushings and Shafts, sponsored by NB Corp. who is Achieving Greater Linear Motion Accuracy for Less.