XI 12 0321 V
- Brand
- QIBR
- Alternative brand
- INA
- Rolling element type
- Roller
- Measurement system
- Metric
- Weight
- 15 kg
- Outer diameter
- 383 mm
- Inner diameter
- 257.2 mm
- Total width
- 38 mm
- External hole circle diameter
- 357 mm
- Internal hole circle diameter
- 287 mm
- Number of mounting holes of the inner ring
- 20
- Number of mounting holes of the outer ring
- 20
- Hole diameter at inner ring
- /
- Hole diameter at outer ring
- /
- Outer diameter of inner ring
- 320 mm
- Inner diameter of outer ring
- 322 mm
- Width of outer ring
- 33 mm
- Width of inner ring
- 34 mm
- Step diameter inner ring
- /
- Width1
- 2.5 mm
- Step diameter outer ring
- /
- Width2
- /
- Gear P.C.D
- 261 mm
- Module
- 3 mm
- Number of teeth
- 87
- Gear type
- Internal gear
- Tooth width
- 34 mm
- Max. radial load (fixing screws)
- 56 kN
- Normal permissible tooth forces
- 8 kN
- Max. permissible tooth forces
- 11.8 kN
- Basic static load rating (axial)
- 320 kN
- Basic dynamic load rating (axial)
- 163 kN
- Basic static load rating (radial)
- 157 kN
- Basic dynamic load rating (radial)
- 104 kN
- Temperature
- -30 ℃ to +80 ℃
- Bearing type
- Cross roller slewing ring bearing
- Ring material
- 42CrMo or 50Mn
- Sealing material
- NBR
- Seal type
- Closed type
Tell us your operating requirements and required quantity.
Description
The crossed roller bearing with internal gear teeth is preloaded, sealed, and features a lubrication nipple on the circumference of the ring without teeth. This configuration ensures precise rotational control and efficient power transmission, making it suitable for applications requiring high accuracy and reliability. The preloaded design minimizes internal clearance, reducing vibration and improving positional accuracy during operation. Sealing protects against contaminants, prolonging bearing life in harsh environments. The lubrication nipple allows for easy maintenance, ensuring optimal lubrication for smooth and reliable performance over time. This bearing type is ideal for robotics, machine tools, and other industrial applications where precision and durability are critical.
QIBR - XI 12 0321 V Slewing Bearing Advantages and Applications
XI 12 0321 V Slewing Bearing has strong stability and high precision. Inner diameter is 257.2 mm,Outer diameter is 383 mm,Total width is 38 mm,Weight is 15 kg. It is suitable for graders, dynamic tamping machines, oxygen blowing devices, and palletizing robots, etc. and is the most widely used bearing in working conditions requiring high precision.
QIBR - XI 12 0321 V Slewing Bearing Characteristics
XI 12 0321 V Slewing Bearing, strong durability, high cost performance, can adapt to harsh environments. XI 12 0321 V Slewing Bearing, can simultaneously bear radial load, axial load and overturning moment, suitable for mechanical equipment with strict precision requirements.
XI 12 0321 V 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 - XI 12 0321 V 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 - XI 12 0321 V 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
Crossed teller bearing, internal gear teeth, preloaded, sealed, lubrication nipple on circumference of ring without teeth.
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
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