Nook Industries, Cleveland, Ohio, introduced a caged ball profile rail for linear guidance.

Caged ball chains provide reduced friction, lower noise levels, prevent the bearings from making incidental contact and offer lubrication advantages such as a patented reinforcement plate and an overall dust-proof design.

The lubrication design adds no additional length to the runner block, and the pad contacts directly with the ball bearings. The lubrication storage pad can save enough lubricant to ensure long-term effects while conforming to environmental protection needs and lowering overall maintenance costs. Lubrication port fittings can be placed on the top, bottom or sides of the runner block, and O-ring seals ensure easy and clean lubrication.

The two stainless-steel reinforcement plates on either end of the runner block increase rigidity. With a clearance of less than 0.3mm, the plate can remove items such as iron filings from the rail and increase x-axis direction force capacity and increase operating speed.

The dust-proof design is accomplished through the plate design and several other advances. Newly designed inner seals slant inward at 45 degrees, protecting against foreign objects and reducing friction. A full-sealing bottom seal reduces oil usage by preventing lubrication leaks.

Nook Industries, Inc.