How to replace a Rothe Erde slewing bearing？

Replacing a Rothe Erde slewing bearing requires careful operation and precautions. Here are the replacement steps and instructions on how to replace it with an FH slewing bearing:

I. Steps to replace a Rothe Erde slewing bearing

Confirm the model and specifications:

Check the model, size (inner diameter, outer diameter, thickness), hole distribution, installation method and other parameters of the existing Rothe Erde slewing bearing.

Confirm the compatibility of the parameters of the FH slewing bearing with the original equipment.

Some models:

Check tools and equipment:

Prepare lifting equipment, wrenches, bolt tensioners, torque wrenches and other tools.

Prepare lubricants and cleaning agents if necessary.

Safety protection measures:

Ensure that the replacement site is stable and shut down the power supply.

Ensure that the equipment is stationary to avoid accidental movement.

2. Disassemble the old slewing bearing

Remove the connector:

Loosen the fixing bolts and unload gradually.
Note symmetrical unloading to avoid damage caused by tilting the bearing.

Lift the old bearing:

Use a sling to fix the bearing to ensure uniform force.
Carefully remove the old bearing from the equipment to avoid damaging adjacent components.

Clean the mounting surface:

Remove oil, rust and residue from the mounting base.
Check that the mounting base is flat.

3. Install the new slewing bearing

Align the holes:

Align the FH slewing bearing with the mounting holes on the equipment.
Confirm that the marking direction of the slewing bearing (such as oil holes, locating pins, etc.) meets the installation requirements.

Install the bolts:

Tighten the bolts in stages in diagonal order.
Use a torque wrench to tighten to the torque value recommended by the manufacturer.

Lubrication:

Fill the grease according to the instructions.
Turn the slewing bearing to check whether it is evenly lubricated.

Test run:

Start the equipment, run at low speed, and observe whether it runs smoothly.
Confirm that there is no abnormal noise or jamming.

4. Precautions for replacing the FH slewing bearing

Parameter matching:

Check whether the size and parameters of the FH slewing bearing are exactly the same as those of the Roth slewing bearing or have been verified to be compatible.

Quality certification:

Make sure the FH slewing bearing comes from a reliable supplier and has the corresponding quality certification (such as ISO standards).

Technical support:

Contact the FH bearing manufacturer’s technical team for installation guidance and technical support when needed.

Long-term maintenance:

Regularly check the bolt tightening status and lubrication to ensure the long-term performance of the bearing.
If you need further assistance or customized installation solutions, you can provide specific equipment and application scenario information, and I will develop a detailed plan for you!