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Assembly process of crossed roller bearings

Crossed roller bearings are designed to handle high radial and axial loads while maintaining a compact design. As such, they are widely used in a variety of industrial applications. In this article, we’ll take a closer look at the assembly process of crossed roller bearings, including the tools and techniques required for successful assembly.

Tools and equipment for assembly of crossed roller bearings

crossed roller bearings

Before you begin assembling your crossed roller bearing, it’s important to ensure that you have the right tools and equipment on hand. Here are some of the tools you’ll need:

  1. Arbor press: An arbor press is used to apply pressure to the bearing components during assembly. This tool should be chosen based on the size and type of bearing you are assembling.
  2. Clean workspace: Ensure that your workspace is clean, free of debris, and well-lit, with plenty of space to work around the bearing components.
  3. Grease: Choose a high-quality, purpose-specific grease suitable for your crossed roller bearing application and operating conditions.
  4. Nitrile gloves: Wear nitrile gloves to avoid getting grease on your hands or transferring dirt and other contaminants to the bearing components.
  5. Plastic or rubber mallet: A plastic or rubber mallet may be necessary to tap the components into place during assembly.
  6. Small screwdriver: A small screwdriver is useful for aligning and fitting the bearing components together.
  7. Torque wrench: A torque wrench may be necessary to ensure that the bolts holding the bearing components together are tightened to the correct specification.

The assembly process of crossed roller bearings

The following steps outline the assembly process for a crossed roller bearing:

  1. Clean the components: Make sure that all the bearing components are clean and free of dirt, debris, and other contaminants. If necessary, use a cleaning solution and a clean, dry cloth to remove any dirt or debris from the components before assembly.
  2. Apply grease: Apply a thin layer of grease to the interior and exterior surfaces of the bearing components. Note that different types of crossed roller bearings may require different grease application methods, so be sure to refer to the manufacturer’s instructions for specific guidance.
  3. Press the bearings: Use an arbor press to seat the raceways and rollers into the bearing housing. Add or remove shims to adjust the bearing’s preload to the desired level.
  4. Insert and secure the spacer: Insert the spacer between the two crossed roller bearings, making sure that it is positioned correctly. Tighten the bolts to the specified torque using a torque wrench.
  5. Align the retaining rings: Align the retaining rings with the slots in the bearing housing, ensuring that they are seated correctly. Use a small screwdriver to adjust as necessary.
  6. Install the end caps: Install the end caps and tighten the bolts to the specified torque using a torque wrench.
  7. Perform a final inspection: Inspect the assembled crossed roller bearing for any signs of damage, misalignment, or other issues. Correct any problems before putting the bearing into service.


Assembling crossed roller bearings requires careful attention to detail and a commitment to using the right tools and techniques for the job. By following best practices for assembly, including the steps outlined in this article, you can help to ensure that your crossed roller bearings will perform reliably and efficiently in your application.

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