RKS.21 0941
- Brand
- QIBR
- Alternative brand
- SKF
- Rolling element type
- Ball
- Measurement system
- Metric
- Weight
- 76 kg
- Outer diameter
- 1046 mm
- Inner diameter
- 898 mm
- Total width
- 56 mm
- External hole circle diameter
- 985 mm
- Internal hole circle diameter
- 862 mm
- Raceway diameter
- 941 mm
- Number of mounting holes of the inner ring
- 20
- Number of mounting holes of the outer ring
- 20
- Hole diameter at outer ring
- M12 mm
- Hole diameter at inner ring
- 18 mm
- Outer diameter of inner ring
- 939.5 mm
- Inner diameter of outer ring
- 942.5 mm
- Width of outer ring
- 46 mm
- Width of inner ring
- 46 mm
- Flange diameter
- 834 mm
- Gear type
- External gear
- Module
- 8 mm
- Number of teeth
- 129
- Gear P.C.D
- 1032 mm
- Normal permissible tooth forces
- 21 kN
- Max. permissible tooth forces
- 72 kN
- Basic static load rating
- 664 kN
- Basic dynamic load rating
- 231 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
Tell us your operating requirements and required quantity.
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 0941 Slewing Bearing Advantages and Applications
RKS.21 0941 Slewing Bearing has high positioning accuracy, good rotation performance and smooth operation. Inner diameter is 898 mm,Outer diameter is 1046 mm,Weight is 76 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 0941 Slewing Bearing Characteristics
RKS.21 0941 Slewing Bearing, adapts to harsh environments, has long service life and low production cost. RKS.21 0941 Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment requiring high precision.
RKS.21 0941 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 0941 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 0941 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
Four-point contact ball slewing bearing, outer ring mounting hole is threaded hole, inner ring flange structure.
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
Showing 4 of 7
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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