VSA 25 1055 N

Inner diameter:: 955 mm

Outer diameter:: 1198 mm

Width:: 56 mm

Mass:: 171 kg

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Rolling element type : Ball

Measurement system : Metric

Weight : 171 kg

Outer diameter (Da) : 1198 mm

Inner diameter (di) : 955 mm

Step diameter-inner ring (di ZT+IT8) : 957 mm

Internal diameter on outer ring (Di) : 1053 mm

Step diameter-outer ring (Di ZT+IT8) : 1055 mm

External bolt circle diameter (La) : 1116 mm

Internal bolt circle diameter (Li) : 995 mm

Number of bolt holes at outer/internal ring (nB) : 30

MAX radial load (frictional contact) : 363.0 KN

Gear P.C.D. : 1180 mm

Module : 10 mm

Number of teeth (z) : 118

Nominal tooth force (Fz norm) : 61 KN

MAX permissible tooth force : 89 KN

Axial dynamic capacities : 520 KN

Axial static capacities : 3150 KN

Radial dynamic load : 340 KN

Radial static load : 1410 KN

Gear type : External Gear

Temperature : -20℃ to +120℃

Seal type : Closed Type

QIBR - VSA 25 1055 N Advantages and Applications

VSA 25 1055 N , with high rigidity and strong anti-overturning ability,Inner diameter (di) is 955 mm，Outer diameter (Da) is 1198 mm，Weight is 171 kg, suitable for filling machines, belt-type concrete spreaders, road rollers and self-propelled aerial work platforms, etc., and is the most widely used bearing in harsh working conditions.

QIBR - VSA 25 1055 N Characteristics

VSA 25 1055 N , easy to install, long service life. VSA 25 1055 N , can bear radial load, axial load and overturning moment at the same time, suitable for mechanical equipment with good performance.

VSA 25 1055 N 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 - VSA 25 1055 N 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 - VSA 25 1055 N 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

The slewing bearing consists of five essential components: the inner ring, which rotates; the outer ring, which remains stationary; rolling elements that facilitate movement; spacers for even distribution; and seals that protect against contaminants and retain lubrication.

A:Outer Ring

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.

B:Inner ring

The inner 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.

C:Rolling element

Rollers and balls are both types of rolling elements, which are the most crucial components of rotary support bearings and the most commonly used rolling elements in the bearing industry.

D:Spacer

It is located between the outer raceway, inner raceway, and rollers/balls of the bearing. It is a isolator block that serves as a cage.

E:Seal

Its role serves two purposes: Firstly, to prevent the loss of lubricating grease or oil inside the bearing, ensuring proper lubrication. Secondly, to shield the bearing from external dust or harmful gases, thus preventing damage.

F:Grease

To ensure the smooth operation of the bearing, it is necessary to inject lubricating grease or oil between the inner and outer rings of the bearing. The function of lubricating grease or oil is to reduce friction coefficient and wear, minimize bearing heat and friction losses, and enhance bearing lifespan.