121.40.4750.990.41.1502

121.40.4750.990.41.1502 · Product image

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121.40.4750.990.41.1502 · Technical drawing

Brand
QIBR
Alternative brand
Rothe erde
Rolling element type
Ball and roller combined
Measurement system
Metric
Weight
3796 kg
Outer diameter
5016 mm
Inner diameter
4526 mm
Total width
183 mm
External hole circle diameter
4852 mm
Internal hole circle diameter
4598 mm
Number of holes
76
Bolt hole diameter
36 mm
Bolt size
M33 mm
Number of grease holes
14
Outer diameter of inner ring
4806 mm
Inner diameter of outer ring
4700 mm
Width of outer ring
133 mm
Width of inner ring
167 mm
Distance at bottom outer ring/inner ring
16 mm
Distance at top outer ring/inner ring
50 mm
Gear P.C.D
4960 mm
Module
20 mm
Number of teeth
248
Addendum modification
+10 mm
Addendum reduction
-2.0 mm
Tooth width
133 mm
Permissible tangential forces normal
231.3 kN
Permissible tangential forces Max.
462.6 kN
Gear type
External gear
Temperature
-20 ℃ to +100 ℃
Seal type
Closed type

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Description

Double-row slewing rings with roller/ball combination bearings are available in configurations without gears, as well as with external gears or internal gears. This design integrates both roller and ball elements to efficiently manage axial and radial loads. It is well-suited for various industrial applications, offering precise rotational control and robust performance in machinery such as cranes, excavators, and wind turbines. The option of external or internal gears enhances versatility, accommodating specific operational requirements for power transmission and operational efficiency.

QIBR - 121.40.4750.990.41.1502 Slewing Bearing Advantages and Applications

121.40.4750.990.41.1502 Slewing Bearing, strong load capacity, high precision, Inner diameter is 4526 mm,Outer diameter is 5016 mm,Total width is 183 mm,Weight is 3796 kg, suitable for cranes, wind turbines, excavators, etc., is a widely used bearing in the machinery industry

QIBR - 121.40.4750.990.41.1502 Slewing Bearing Characteristics

121.40.4750.990.41.1502 Slewing Bearing, high durability, low wear, long life, simple maintenance. 121.40.4750.990.41.1502 Slewing Bearing, can withstand high radial loads, axial loads and large overturning moments, suitable for applications that require heavy loads.

121.40.4750.990.41.1502 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 - 121.40.4750.990.41.1502 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 - 121.40.4750.990.41.1502 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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