VSA 20 0844 N

VSA 20 0844 N · Product image

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VSA 20 0844 N · Technical drawing

Brand
QIBR
Alternative brand
INA
Rolling element type
Ball
Measurement system
Metric
Weight
71 kg
Outer diameter
950.1 mm
Inner diameter
772 mm
Total width
56 mm
External hole circle diameter
885 mm
Internal hole circle diameter
798 mm
Number of mounting holes of the outer ring
36
Number of mounting holes of the inner ring
40
Hole diameter at outer ring
M12 mm
Hole diameter at inner ring
14 mm
Outer diameter of inner ring
842.5 (0 , -0.6) mm
Inner diameter of outer ring
845.5 (+0.6 , 0) mm
Width of outer ring
44.5 mm
Width of inner ring
44.5 mm
Gear type
External gear
Module
8 mm
Number of teeth
117
Gear P.C.D
936 mm
Max. radial load (fixing screws)
148.7 kN
Normal permissible tooth forces
28.3 kN
Max. permissible tooth forces
42 kN
Basic static load rating (axial)
1150 kN
Basic dynamic load rating (axial)
222 kN
Basic static load rating (radial)
510 kN
Basic dynamic load rating (radial)
145 kN
Temperature
-20 ℃ to +100 ℃
Bearing type
Four point contact ball slewing ring bearing
Ring material
42CrMo or 50Mn
Sealing material
NBR
Seal type
Closed type
Ball material
AISI 52100

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Description

The gear system is equipped with external gear teeth for efficient power transmission. It offers selectable internal clearance, allowing customization for specific application requirements. The unit is sealed to protect against environmental contaminants, ensuring reliable operation in harsh conditions. A notable feature is the lubrication nipple located on the periphery of the toothless ring, facilitating easy access for maintenance without compromising the sealing integrity. This design enhances durability, minimizes downtime, and supports consistent performance in industrial settings where precision and reliability are paramount.

QIBR - VSA 20 0844 N Slewing Bearing Advantages and Applications

VSA 20 0844 N Slewing Bearing, with high rigidity and strong anti-overturning ability,Inner diameter is 772 mm，Outer diameter is 950.1 mm，Weight is 71 kg, suitable for filling machines, belt-type concrete spreaders, road rollers and self-propelled aerial work platforms, etc., and is the most widely used bearing in harsh working conditions.

QIBR - VSA 20 0844 N Slewing Bearing Characteristics

VSA 20 0844 N Slewing Bearing, easy to install, long service life. VSA 20 0844 N Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment with good performance.

VSA 20 0844 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 - VSA 20 0844 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 - VSA 20 0844 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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