21 0411 01 detail specifications:

21 0411 01 light series four point contact ball bearings features:

1. Provide exceptional moment, thrust, and radial load capacities.

2. Normal clearance, suitable for light to medium-duty arrangements which require lower accuracy.

3. Easy installation, with mounting holes on both inner and outer ring.

4. Light weight and thin section.

21 0411 01 slewing bearing installation instructions

1. Make sure the mounting surface is flat and clean, and free from burrs or

rough edge.

2. The unhardened zone is marked with an “S” on the slewing ring, it must be positioned outside the main load-carrying areas.

3. Commissioning of the slewing ring under sufficient load.

4. Adjust the backlash of gear and recheck it after final tightening of the bearing.

5. Fastening bolts. Place the bearing onto connecting structure and align the screw holes. Screw all the bolts in the holes first and follow the order as shown in diagram when tightening bolts in diagonally opposite sequence. Do not tighten bolts randomly.

6. Check the installation by rotating the assembled bearing arrangement. The torque should not show any excessive variation or “tight spots” during rotation.