021.50.2240
- Brand
- QIBR
- Rolling element type
- Ball
- Measurement system
- Metric
- Outer diameter
- 2455 mm
- Inner diameter
- 2025 mm
- Total width
- 190 mm
- External hole circle diameter
- 2389 mm
- Internal hole circle diameter
- 2091 mm
- Number of holes
- 48
- Diameter of through holes
- 33 mm
- Bolt size
- M30 mm
- Depth
- 60 mm
- Number of grease holes
- 8
- Distance at top outer ring/inner ring
- 47 mm
- Width of outer ring
- 178 mm
- Tip diameter
- 2540.8 mm
- Module
- 16 mm
- Number of teeth
- 156
- Tooth width
- 120 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
Tell us your operating requirements and required quantity.
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 - 021.50.2240 Slewing Bearing Advantages and Applications
021.50.2240 Slewing Bearing has strong load-bearing capacity and strong vibration resistance. Inner diameter is 2025 mm,Outer diameter is 2455 mm,Total width is 190 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 - 021.50.2240 Slewing Bearing Characteristics
021.50.2240 Slewing Bearing, high cost performance, low cost, large space utilization. 021.50.2240 Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment requiring high stability.
021.50.2240 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 - 021.50.2240 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 - 021.50.2240 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.
Features & benefits
The externally toothed double-row ball slewing bearing has relatively large axial and radial dimensions, and is very convenient for open assembly.
The outer ring has excellent mechanical performance, with high strength and toughness. After quenching and tempering (Q+T), it exhibits fatigue resistance, impact resistance, and excellent low-temperature impact toughness.
Downloads
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Bearing condition questionnaire
Bearing Condition Questionnaire
Agency document
Agent Application Form
Product brochure
Slewing & Cross Roller Bearing Catalog
Product brochure
Bearing Unit Catalog
Showing 4 of 7
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