021.40.1250

021.40.1250 · Product image

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021.40.1250 · Technical drawing

Brand
QIBR
Rolling element type
Ball
Measurement system
Metric
Outer diameter
1426 mm
Inner diameter
1074 mm
Total width
160 mm
External hole circle diameter
1374 mm
Internal hole circle diameter
1126 mm
Number of holes
40
Diameter of through holes
26 mm
Bolt size
M24 mm
Depth
48 mm
Number of grease holes
5
Distance at top outer ring/inner ring
39 mm
Width of outer ring
150 mm
Tip diameter
1497.6 mm
Module
12 mm
Number of teeth
122
Tooth width
90 mm
Gear type
External gear
Temperature
-20 ℃ to +100 ℃
Bearing type
Double-row ball slewing bearing with different ball diameters
Ring material
42CrMo or 50Mn
Sealing material
NBR
Seal type
Closed type

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Description

The externally toothed double-row ball slewing bearing is characterized by its relatively large axial and radial dimensions, making it well-suited for applications requiring robust load-bearing capabilities. This design is particularly advantageous for open assembly setups, facilitating straightforward installation and maintenance in various industrial contexts. The external teeth enable efficient power transmission and precise rotational control, essential for equipment such as cranes, excavators, and wind turbines. This bearing configuration ensures reliable performance under heavy loads and harsh operating conditions, emphasizing durability and operational flexibility in demanding environments.

QIBR - 021.40.1250 Slewing Bearing Advantages and Applications

021.40.1250 Slewing Bearing has strong load-bearing capacity and strong vibration resistance. Inner diameter is 1074 mm,Outer diameter is 1426 mm,Total width is 160 mm. It is suitable for cranes, radar systems, quenching machine tools, tanks, park amusement machines, and wind turbines, etc.It is the most widely used bearing in working conditions that require stable operation.

QIBR - 021.40.1250 Slewing Bearing Characteristics

021.40.1250 Slewing Bearing, high cost performance, low cost, large space utilization. 021.40.1250 Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment requiring high stability.

021.40.1250 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 - 021.40.1250 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 - 021.40.1250 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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