RKS.21 0741

RKS.21 0741 · Product image

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RKS.21 0741 · Technical drawing

Brand
QIBR
Alternative brand
SKF
Rolling element type
Ball
Measurement system
Metric
Weight
60 kg
Outer diameter
840 mm
Inner diameter
698 mm
Total width
56 mm
External hole circle diameter
785 mm
Internal hole circle diameter
662 mm
Raceway diameter
741 mm
Number of mounting holes of the inner ring
16
Number of mounting holes of the outer ring
18
Hole diameter at outer ring
M12 mm
Hole diameter at inner ring
18 mm
Outer diameter of inner ring
739.5 mm
Inner diameter of outer ring
742.5 mm
Width of outer ring
46 mm
Width of inner ring
46 mm
Flange diameter
634 mm
Gear type
External gear
Module
6 mm
Number of teeth
138
Gear P.C.D
828 mm
Normal permissible tooth forces
16 kN
Max. permissible tooth forces
54 kN
Basic static load rating
524 kN
Basic dynamic load rating
211 kN
Temperature
-20 ℃ to +100 ℃
Bearing type
Four-point contact slewing bearing with flange
Ring material
42CrMo or 50Mn
Sealing material
NBR
Seal type
Closed type
Ball material
AISI 52100

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Description

The four-point contact ball slewing bearing with an outer ring mounting hole as a threaded hole and an inner ring flange structure is engineered for applications requiring secure and precise mounting. The threaded hole in the outer ring facilitates straightforward installation onto machinery or structures using bolts, ensuring robust fixation and alignment. Meanwhile, the inner ring's flange structure enhances stability and supports axial and radial loads, as well as moment loads from various directions. This design is particularly advantageous in equipment such as cranes, excavators, and industrial machinery where reliable rotation and load-bearing capabilities are essential.

QIBR - RKS.21 0741 Slewing Bearing Advantages and Applications

RKS.21 0741 Slewing Bearing has high positioning accuracy, good rotation performance and smooth operation. Inner diameter is 698 mm,Outer diameter is 840 mm,Weight is 60 kg. It is suitable for solar power generation equipment, earth-moving machinery, excavators, dismantling machines and stackers and reclaimers, etc. It is the most widely used bearing in working conditions requiring high precision.

QIBR - RKS.21 0741 Slewing Bearing Characteristics

RKS.21 0741 Slewing Bearing, adapts to harsh environments, has long service life and low production cost. RKS.21 0741 Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment requiring high precision.

RKS.21 0741 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 - RKS.21 0741 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 - RKS.21 0741 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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