XI 20 0720 N

XI 20 0720 N · Product image

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XI 20 0720 N · Technical drawing

Brand
QIBR
Alternative brand
INA
Rolling element type
Roller
Measurement system
Metric
Weight
84 kg
Outer diameter
812 mm
Inner diameter
584 mm
Total width
58 mm
External hole circle diameter
780 mm
Internal hole circle diameter
660 mm
Number of mounting holes of the inner ring
40
Number of mounting holes of the outer ring
40
Hole diameter at inner ring
18 mm
Hole diameter at outer ring
18 mm
Outer diameter of inner ring
719 mm
Inner diameter of outer ring
721 mm
Width of outer ring
51 mm
Width of inner ring
51 mm
Step diameter inner ring
717 mm
Width1
2.5 mm
Step diameter outer ring
810 mm
Width2
8 mm
Gear P.C.D
600 mm
Module
8 mm
Number of teeth
75
Gear type
Internal gear
Tooth width
51 mm
Max. radial load (fixing screws)
260 kN
Normal permissible tooth forces
39.1 kN
Max. permissible tooth forces
56.9 kN
Basic static load rating (axial)
1060 kN
Basic dynamic load rating (axial)
500 kN
Basic static load rating (radial)
520 kN
Basic dynamic load rating (radial)
315 kN
Temperature
-30 ℃ to +80 ℃
Bearing type
Cross roller slewing ring bearing
Ring material
42CrMo or 50Mn
Sealing material
NBR
Seal type
Closed type

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Description

The crossed roller bearing with internal gear teeth is preloaded, sealed, and features a lubrication nipple on the circumference of the ring without teeth. This configuration ensures precise rotational control and efficient power transmission, making it suitable for applications requiring high accuracy and reliability. The preloaded design minimizes internal clearance, reducing vibration and improving positional accuracy during operation. Sealing protects against contaminants, prolonging bearing life in harsh environments. The lubrication nipple allows for easy maintenance, ensuring optimal lubrication for smooth and reliable performance over time. This bearing type is ideal for robotics, machine tools, and other industrial applications where precision and durability are critical.

QIBR - XI 20 0720 N Slewing Bearing Advantages and Applications

XI 20 0720 N Slewing Bearing has strong stability and high precision. Inner diameter is 584 mm,Outer diameter is 812 mm,Total width is 58 mm,Weight is 84 kg. It is suitable for graders, dynamic tamping machines, oxygen blowing devices, and palletizing robots, etc. and is the most widely used bearing in working conditions requiring high precision.

QIBR - XI 20 0720 N Slewing Bearing Characteristics

XI 20 0720 N Slewing Bearing, strong durability, high cost performance, can adapt to harsh environments. XI 20 0720 N Slewing Bearing, can simultaneously bear radial load, axial load and overturning moment, suitable for mechanical equipment with strict precision requirements.

XI 20 0720 N Slewing Bearing Features and Advantages

Compact design: Compact structure, it can be installed in space-constrained environments, and has a wider range of applications.

High load capacity: It can withstand axial, radial and overturning moments at the same time, suitable for heavy-duty applications.

Superior precision: Maintain high precision during use and reduce errors in equipment operation.

High temperature and wear resistance: Made of high-temperature bearing steel, with good wear resistance and strength.

Application: Widely used in lifting machinery, engineering machinery, transportation machinery, mining machinery, metallurgical machinery, medical equipment, ships, warships, radar, wind power generation and other fields.

QIBR - XI 20 0720 N Slewing Bearing Optimization

Grease replacement: Replace grease with other greases such as SFK, Mobil, Krupp, etc. to optimize the working performance and use conditions of the bearing.

Coating optimization: Provide other coatings such as zinc plating or nickel plating to enhance corrosion resistance and wear resistance and extend its service life in harsh environments.

Process optimization: Optimize the bearing production process, increase the bearing operating temperature range, and improve the bearing accuracy and stability.

More customization: QIBR can optimize the bearing structure design according to customers’ drawings or equipment requirements to meet equipment needs.

QIBR - XI 20 0720 N Slewing support bearing quality control

Dimension measurement: Use a variety of professional high-precision instruments to measure multiple dimensions of the bearing, with the highest accuracy up to 0.01mm.

Rotation accuracy: Use a dial indicator to measure small flaws or deviations on the bearing surface, with a measurement accuracy of up to 0.01mm.

Hardness measurement: Use a Leeb hardness tester to measure the bearing surface hardness, with a measurement accuracy of ±6HLD.

Metallographic analysis: Use a professional metallographic microscope to analyze the internal metallographic structure of the metal.

Geometric tolerance: Use a roundness meter to measure the bearing geometry and relative position.

Noise monitoring: Use a vibration meter to monitor the vibration during operation and obtain noise data.

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