242DBS247y

242DBS247y · Внешний вид изделия

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242DBS247y · Технический чертёж

Бренд
QIBR
Alternative brand
NSK
Rolling element type
Ball
Measurement system
Metric
Weight
47 kg
Outer diameter
456 mm
Inner diameter
242 mm
Total width
78 mm
External hole circle diameter
394.5 mm
Internal hole circle diameter
277 mm
Number of mounting holes of the inner ring
19
Number of mounting holes of the outer ring
12
Hole diameter at outer ring
M16 mm
Hole diameter at inner ring
21 mm
Distance at bottom outer ring/inner ring
13 mm
Width of inner ring
58 mm
Inner diameter of outer ring
335 mm
Outer diameter of inner ring
339 mm
Gear type
External gear
Module
6 mm
Number of teeth
74
Gear P.C.D
444 mm
Tooth width
56 mm
Tooth forces
43.5 kN
Basic static load rating (axial)
1.15 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

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Описание

The slewing bearing features an inner ring with toothed steps and utilizes a four-point contact structure, specifically designed for small and medium-sized cranes. This configuration ensures optimal load distribution and stability during operation, accommodating both radial and axial forces effectively. The toothed steps on the inner ring facilitate precise positioning and rotational control, essential for crane applications where accuracy and reliability are paramount. The bearing's robust construction and high-quality materials enhance durability, making it suitable for prolonged use in challenging environments. Its design supports smooth operation and minimal maintenance, contributing to efficient performance and extended service life in industrial settings.

QIBR - 242DBS247y Slewing Bearing Advantages and Applications

242DBS247y Slewing Bearing has strong anti-overturning ability and good high-speed performance.Inner diameter is 242 mm,Outer diameter is 456 mm,Total width is 78 mm,Weight is 47 kg. It is suitable for sand mixers, filling machines, belt feeders, graders, tunneling machines, and Ferris wheels, etc. and is the most widely used bearing in working conditions that need to withstand overturning moments.

QIBR - 242DBS247y Slewing Bearing Characteristics

242DBS247y Slewing Bearing, low cost, high safety, easy maintenance. 242DBS247y Slewing Bearing, can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment with high safety requirements.

242DBS247y 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 - 242DBS247y 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 - 242DBS247y 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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