131.25.500 634mm 3 Rows Roller Slewing Bearings with External Gear

• Standard or Nonstandard：Standard
• Feature：High Speed, Antimagnetic, Cold-Resistant, Corrosion-Resistant, Heat-Resistant
• Sealing Gland：Sealed On Both Sides
• Rolling-Element Number：Multiple-Column
• Roller Type：Deep Groove Raceway
• Material：Bearing Steel

=== Base Info ===

• Model NO.：131.25.500
• Type：External Gear
• Transport Package：Cloth
• Specification：Customized
• Trademark：HBB
• Origin：Luoyang, China
• Production Capacity：30000 PCS Yearly

=== Description ===

Basic Info.

Model NO. 131.25.500 Type External Gear Transport Package Cloth Specification Customized Trademark HBB Origin Luoyang, China Production Capacity 30000 PCS Yearly

Product Description

HBB High Performance Triple Rows Roller Bearings with External Gear
Normally, Slewing Bearings are large-size rolling bearings that can accommodate axial,radial and moment loads acting either singly or in combination and in any direction. They can perform both slewing (oscillating) movements as well as rotational movements.

Triple row roller slewing bearings are an excellent choice for heavily loaded applications. They provide the highest load ratings possible and can accommodate very heavy loads and high tilting moments. These bearings are combined cylindrical roller radial/thrust bearings. They consist of one one-piece and one two-piece ring as well as two roller sets to accommodate axial loads, and one roller set to accommodate radial loads. Polyamide cages separate the axially loaded rollers. The bearings are not preloaded and have integral lip seals.
Triple row roller slewing bearings can be manufactured:
• without a gear
• with an internal gear
• with an external gear
Triple row roller slewing bearings are sensitive to the deflections of associated components.
As a result, an extremely stiff and accurately manufactured support structure is required if the bearing is to achieve maximum service life.






Basically, a slewing bearing consists of an inner ring (a), an outer ring (b) and rolling elements − balls (c) or cylindrical rollers − that are separated by polyamide spacers (d). The rings, one of which usually incorporates a gear (e), are provided with holes (f) to accommodate attachment bolts. The holes may be threaded. Generally, only the raceways in the rings (h) are hardened and precision-ground. Integral seals (g) made of acrylonitrile-butadiene rubber (NBR) keep the lubricant in, and contaminants out of the bearing. Slewing bearings are re-lubricated Slewing bearings through grease fittings (i) to reduce maintenance and operating costs.



Compared to traditional pivot arrangements, slewing bearing arrangements provide many design and performance advantages. The compactness and large inner diameter simplify the design of the bearing arrangement and its associated components.

The low sectional height of these bearings means that the pinion lever can be kept short. In most cases only flat surfaces on the associated components are needed.
Slewing bearings were originally designed to be mounted only on horizontal support structures, but can now be used successfully in vertical bearing arrangements. The forces and load distribution in slewing bearings, when subjected to axial, radial and moment loads.

Technical Speficiations:



Slewing bearings perform extremely well in a variety of applications such as:
access platforms; bucket wheel excavators; conveyor booms; cranes of all types, small, medium and large excavators; indexing tables; ladle turrets; offshore applications; robots; railway bogies; rotary platforms; stackers; solar mirrors; tunnel boring machines; wind turbines; radar antenna


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