1290DBS204y
- Brand
- QIBR
- Alternative brand
- NSK
- Rolling element type
- Ball
- Measurement system
- Metric
- Weight
- 375 kg
- Outer diameter
- 1560 mm
- Inner diameter
- 1290 mm
- Total width
- 115 mm
- External hole circle diameter
- 1470 mm
- Internal hole circle diameter
- 1330 mm
- Number of mounting holes of the inner ring
- 36
- Number of mounting holes of the outer ring
- 36
- Hole diameter at outer ring
- M20 mm
- Hole diameter at inner ring
- 22 mm
- Distance at bottom outer ring/inner ring
- 15 mm
- Width of inner ring
- 95 mm
- Inner diameter of outer ring
- 1412 mm
- Outer diameter of inner ring
- 1410 mm
- Gear type
- External gear
- Module
- 12 mm
- Number of teeth
- 128
- Gear P.C.D
- 1536 mm
- Tooth width
- 90 mm
- Tooth forces
- 65 kN
- Basic static load rating (axial)
- 5.45 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
- Cage material
- Nylon
Tell us your operating requirements and required quantity.
Description
The slewing bearing is characterized by an outer ring equipped with toothed gears and employs a four-point contact structure, tailored specifically for small and medium-sized cranes. This design ensures efficient load distribution and stability under varying operational conditions, effectively handling both radial and axial forces. The toothed gears on the outer ring enable precise positioning and controlled rotation, crucial for crane applications requiring accurate movement and synchronization. Built with durability in mind, the bearing utilizes high-quality materials and robust construction to withstand rigorous use in industrial environments. Its reliability promotes smooth operation and minimal downtime, contributing to enhanced productivity and prolonged service life in crane operations.
QIBR - 1290DBS204y Slewing Bearing Advantages and Applications
1290DBS204y Slewing Bearing has strong load-bearing capacity, great flexibility and high manufacturing precision.Inner diameter is 1290 mm，Outer diameter is 1560 mm，Total width is 115 mm，Weight is 375 kg. It is suitable for excavators, robots, solar brackets, wind turbines and grabbers, etc. and is the most widely used bearing in working conditions that require heavy loads.
QIBR - 1290DBS204y Slewing Bearing Characteristics
1290DBS204y Slewing Bearing, low maintenance cost, easy installation. 1290DBS204y Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment with high load-bearing capacity requirements.
1290DBS204y 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 - 1290DBS204y 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 - 1290DBS204y 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
Outer ring with toothed gears, four-point contact structure, used for small and medium-sized cranes.
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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