THK SFB Power Linear Bushing Shaft SFB8 1/2" OD x 24" Length (Pack of 5)

The balls in the loaded area of the nut are in point contact with the LM shaft. This allows straight motion with minimal friction resistance and achieves highly accurate and smooth motion despite the small permissible load. The nut uses high-carbon chromium bearing steel and its outer and inner surfaces are ground after being heat-treated. The Linear Bushing is used in a broad array of applications, such as slide units of precision equipment, including measuring instruments, multi-spindle drilling machines, tool grinders, printing machines, and food packaging machines. Model LM Linear Bushings come standard with end seals. Utilize Model SF Series Bushing Shafts with Model LM Bushings. THKs Power Linear Bushing is engineered with cages of a synthetic resin that continually lubricate the rolling elements. The Power Linear Bush also has a uniquely designed, hardened steel ball plate featuring a precisely ground groove that is slightly larger than the ball. This results in an increased contact area between the balls and the ball plate. THKs Power Linear Bushing has extremely smooth and quiet motion due to a uniquely designed ball retainer and outer sleeve. They are constructed of synthetic polymer, which is lightweight, low friction and highly wear-resistant. These characteristics enable moving parts to have rapid motion while requiring lower driving power thereby reducing energy costs. The convex shape of the ball plate provides a pivot point at the center which allows a self-adjustment capability up to 0.5 degrees. This self-adjustment capability eliminates any possibility of edge pressure caused by inaccurate machining, errors in mounting, or shaft deflection. Self-adjustment capability can compensate for inaccuracies in base machining, reducing installation time and costs. The Power Linear Bush ball plates are designated to float in the outer sleeve. This allows clearance between the balls and shaft to be adjusted according to application.

• Fully interchangeable with conventional linear bushings
• Heat Treated and Ground
• Used in combination with a cylindrical LM shaft to perform infinite straight motion
• Highly Accurate Linear Motion
• Utilize Model SFB Bushing Shafts with Model LMB Power Linear Bushings