Q_Goest said:Absolutely! They're called "http://www.google.com/search?hl=en&...vTIEJpZCgBLvDvdoLAAAAqgQFT9D7lIA&safe=active"" and service life can be calculated the same basic way it's calculated for rotating bearings.
I've used http://www.thomsonlinear.com/website/com/eng/products/linear_guides/linear_bearings.php" (now Danaher Motion), but there are many reputable manufacturers out there.
I'd suggest going to http://www.thomasnet.com/products/linear-bearings-4111209-1.html"to find suppliers in the US.
There are several types of straight mechanisms commonly used in industrial machines, including linear guides, ball screws, rack and pinion systems, belt drives, and chain drives.
A linear guide is a type of straight mechanism that uses rolling elements, such as balls or rollers, to guide and support the motion of a machine component in a linear direction. The rolling elements are housed within a rail and carriage system, allowing for smooth and precise movement.
Ball screws use a combination of a screw and ball bearings to convert rotary motion into linear motion. This allows for efficient and precise movement, making them often used in applications that require high accuracy and repeatability.
Rack and pinion systems are popular in industrial machines due to their ability to provide high-speed and high-torque motion. They are also relatively simple and easy to maintain, making them a cost-effective option.
Belt and chain drives use a flexible belt or chain to transmit power and motion between two shafts. They are commonly used in applications that require high-speed and smooth operation, such as conveyor systems, because they have low friction and can handle heavy loads.