With Vertical Outer Spherical Ball Bearing

# Brief Introduction to Radial Outer Spherical Ball Bearings with Stand Mounting Radial Outer Spherical Ball Bearings with Stand Mounting are integrated units that combine outer spherical ball bearings with stand-type bearing housings. Their core advantages include easy installation and low requirements for shaft alignment. They are mainly used in general mechanical applications with low rotational speeds and medium loads. Its core structure consists of two parts and has clear functions. The outer spherical ball bearing body includes an inner ring fixed to the shaft, an outer ring with a spherical design that fits the seat body, steel balls, a cage, and seals. It mainly withstands radial loads and also accommodates a small amount of axial loads. The spherical design of the outer ring can also achieve the function of self-aligning; vertical bearing housings are mostly made of gray cast iron or stamped steel plates, and they have installation holes for fixing on the frame, ball holes for fitting the bearings, and some models also have lubrication holes, mainly serving to fix the bearings, protect the internal components, and transfer loads. In terms of key advantages, this type of bearing has low installation difficulty. The housing body comes with built-in installation holes, eliminating the need for high-precision processing of the base. It also simplifies the design of the shaft. It has self-aligning capability, allowing an angle deviation of 2° - 3°, which can compensate for deviations such as shaft bending and installation misalignment. Maintenance is convenient. The housing body and the bearing itself come with built-in seals, effectively preventing impurities from entering. Some models with lubrication holes can be regularly replenished with lubricating grease. It has strong interchangeability, following international or industry standards. Products of different brands of the same model can be directly interchanged. It offers high cost-effectiveness. The integrated design reduces the cost of separately purchasing bearings and processing the housing body, and the strength of the housing body can meet the usage requirements.

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Product Introduction

The vertical external spherical ball bearing is a standardized rolling bearing unit that integrates an external spherical ball bearing with a vertical bearing housing. Through the innovative design of "bearing body + integrated housing", it achieves integrated functions of support, positioning, and protection. It is widely applicable to industrial scenarios with low rotational speed and medium load, and is a general mechanical core component that balances installation convenience and adaptability to working conditions.

I. Product Structure and Core Components

This product consists of two core components: the external spherical ball bearing body and the vertical bearing housing. The components work together to achieve stable bearing capacity and flexible adaptation:

External spherical ball bearing body: As the core of bearing support, it includes the inner ring, outer ring, rolling elements, cage, and seals. The inner ring often has conical holes or is paired with a locking sleeve for a firm connection with the shaft; the outer surface of the outer ring is designed as a spherical structure, which can form a precise fit with the housing; the rolling elements are high-strength steel balls, responsible for load transmission; the cage effectively separates the steel balls to reduce friction loss; the mainstream sealing configuration is double-sided adhesive seal (2RS) or iron seal (ZZ), and some high-end models use triple-lip seals, which can effectively prevent dust, water vapor intrusion, and lubricant leakage.

Vertical bearing housing: Mainly cast from gray cast iron (HT200/HT250), some lightweight models use stamped steel plates, and a few special scenarios are adapted to engineering plastic materials. The bottom of the housing has standardized installation holes, which can be directly fixed to the frame through bolts; the interior is equipped with ball holes matching the outer ring of the bearing, providing a foundation for the self-aligning function; some models are reserved for lubrication holes and equipped with oil nozzle structures, facilitating regular lubricant replenishment.

II. Core Performance and Advantages

(1) Precise self-aligning, adaptable to installation deviations

The spherical surface of the bearing outer ring and the spherical surface of the housing form a spherical fit, allowing the bearing to freely deflect within a 2° - 3° angle range. This can effectively compensate for misalignment caused by shaft bending, frame deformation, or assembly errors, avoiding local stress concentration that leads to early failure. For example, in old conveyor belt equipment, installing this product can significantly reduce jitter and noise caused by installation deviations.

(2) Convenient installation, reduced base requirements

The housing adopts an integrated design, requiring no high-precision boring processing of the installation base, and can be fixed directly through bottom bolts; the inner ring of the bearing is connected to the shaft through a locking sleeve or conical hole, without the need for additional shaft shoulders for positioning, significantly simplifying the design and processing of the shaft. During installation, only the pre-assembly of the bearing and housing, shaft positioning, and bolt tightening need to be completed according to specifications, to achieve stable installation.

(3) Strong environmental adaptability, extended service life

Relying on the dual protective structure of "housing protection + multiple seals", the product can adapt to harsh working conditions such as high dust, high humidity, and moderate vibration. In crushing machines, agricultural harvesters, and other equipment, facing high temperatures (some models can withstand 250°C), heavy dust, and high vibration environments, the service life can be increased by more than 5 times compared to ordinary bearings. In some cases, it can maintain stable performance for half a year of continuous operation.

(4) Standardized design, excellent interchangeability

The product dimensions and installation methods strictly follow international and industry standards such as ISO, JIS, and GB. Mainstream models such as UC series, UK series, and UCPK series have the same specifications of products, which can be directly interchanged between different brands, eliminating the need to modify the base structure during maintenance, greatly improving maintenance efficiency.

(5) Reliable bearing capacity, adaptable to various loads

It mainly withstands radial loads and can also accommodate a small amount of axial loads. Different models correspond to clear rated load parameters. For example, the UCP218HT2-TR model can withstand a dynamic load of 95900N and a static load of 71500N, sufficient for heavy-load scenarios in construction machinery, mining equipment, etc. The smaller models such as UCP201HT2-TR have a rated load of 6650N and are suitable for scenarios such as light conveying equipment.

III. Model Specification System
The product model is composed of letters and numbers, clearly indicating key information such as structural type and size parameters. The mainstream model system is as follows:
UC Series: Basic type spherical ball bearing combined with vertical housing, with inner diameters ranging from 12mm to 140mm, such as UC201 (inner diameter 12mm), UC328 (inner diameter 140mm), suitable for general industrial scenarios;
UK Series: Enhanced type with locking rings, such as UKP205+H2305 (inner diameter 25mm, outer diameter 52mm, width 28mm), suitable for scenarios where the shaft diameter needs to be flexibly adjusted;
UCPK Series: High-precision compatible type, such as UCPK213 (inner diameter 65mm, outer diameter 120mm, width 48mm), meeting the precision requirements of equipment such as machine tools;
Special function models: such as HCP205~FSB series eccentric lock type, through the eccentric ring structure to enhance the connection stability between the shaft and the bearing; UCP.HT2-TR series high-temperature resistant type, capable of withstanding 250℃ high-temperature environment, suitable for high-temperature operating equipment.
Note: The bearing housing with the model (such as UCP201HT2-TR) has a clearance fit for the spherical ball surface tolerance, while the other models have a transition fit. When selecting, it is necessary to confirm the assembly accuracy requirements.
IV. Application Scenarios
Thanks to its diverse performance advantages, the product has been widely applied in key equipment of multiple industries:
Agricultural machinery: transmission systems of tractors, conveyor devices of combine harvesters, etc., capable of adapting to the deformation of shafts caused by uneven terrain in the field and resisting soil and moisture erosion;
Food processing equipment: conveyor belts, mixing devices, etc., through good sealing to prevent lubricant leakage from polluting food, low maintenance characteristics to reduce production interruptions;
Construction engineering machinery: concrete mixers, tower cranes, etc., high load-bearing capacity and seismic performance can cope with heavy loads and frequent vibration and impact;
General industrial equipment: main shaft support of machine tools, conveyor drums, fans, mining crushers, etc., covering various working conditions such as light, medium, and heavy loads, multiple dust, and moderate temperatures.

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