Custom Bearings and Linear Motion Systems

Custom Carriages and their Benefits

These specialized or custom products have been used in a wide range of applications including general industrial applications and government agencies, saltwater environments and submarines, aerospace and outer space. Parts have been supplied for clean room applications, operating rooms, high tech robotics, and automated pick and place equipment.

One way that PBC Linear achieves improved performance through customization is by streamlining the features and requirements into its carriage designs. Two ways this can be accomplished is by either modifying the standard available carriage, or by creating a completely new carriage through incorporation of the application parts.

• Modified Standard: The modified standard option offers several additional machining features to enhance application fit. Our engineers and machinists can customize standard carriages through extended lengths, additional or repositioned tapped holes, or added machined features for alignment and reference. These optional features are made possible by our 24/7 flexible machining centers, 30-plus CNC turning and milling machines, shaft grinding and straightening processes — all completed in house.
• Complete Custom: For this option, PBC Linear engineers work directly with the customer design teams to create new, more integrated carriage solutions that combine design features with PBC Linear products. The result is a streamlined assembly that reduces extra pieces and saves on total installed cost. This is typically done by eliminating machining plates and fasteners. Additionally, it reduces the number of machining vendors by using our on-site capabilities for high volume production.

Custom linear rails and their benefits

Standard linear rail components meet the demands of most industrial applications, but in some instances, a customized rail solution can offer advantages and benefits for the designer. Here are some beneficial reasons to consider a custom linear rail solution.

• Personalized Look — Often linear rails and slides are hidden within a machine, but in other cases, they are clearly seen. One way an equipment manufacturer can separate their brand is to customize a rail to give it their own look. Color and machined features are two examples of eye appeal that can be seen in exercise equipment and open kiosk retail systems.
• Cost Savings — While extra machining does add cost to components, often there are hidden costs in an overall system that can be cut or eliminated when using custom rails. Savings in installation time, fewer components, and shipment weight are just a few of the cost considerations.
• Cleanability — Slots, weep holes, and other features can be added to a linear rail to ensure the maximum performance in a washdown environment. To learn more about the best practices in washdowns, please read the white paper: Linear Motion Design for Washdown Applications.
• Ease of Assembly and Installation — Features such as a reference edges, locating pins, mounting tabs, and connectors can be integrated directly into the rail design, shortening assembly time and ensuring alignment at installation.
• Reduced Weight — The number one benefit of custom machined linear rails is the amount of weight saved. This is especially critical to the aerospace industry, but can also be an advantage within a range of medical, ergonomic, and industrial equipment.

Another example of customization has been demonstrated in the wood working industry. For this particular wood working industry example, a manufacturer was using a commercial wood sander for fast sanding of large furniture. The roller bearings that had been fitted into the oscillating mechanism of the sander were failing weekly. The PBC Linear solution was to design an optimized bearing assembly that would rock along with the motion of the cam system, completely eliminating misalignment issues. We used an internal, periodic lubrication system to facilitate smooth oscillating motion. This extended the life of the system from one week to over a year!

Read more on this in our application story about Simplicity linear bearings in the woodworking industry, or find out more about more about customization by downloading the custom linear bearings data sheet.