Pillow block bearings are widely used, especially in situations where high requirements are placed on equipment cost and installation convenience. Its core advantages lie in its compact structure, convenient loading and unloading, and most importantly – the automatic self-aligning function, which can effectively compensate for the centering error during installation or the deflection deformation of the shaft
Its main application scenarios can be summarized into the following four major fields, and each field has typical equipment examples:
First: Agricultural machinery: Coping with harsh environments and vibrations
Application reason: Good sealing performance: With sealing rings on both sides, it can effectively prevent dirt, water and pesticides from entering. Impact resistance and self-aligning: Capable of withstanding severe vibration and misalignment of the shaft.
Specific examples: combine harvesters, threshers and straw returning machines
Second: Conveying system: Suitable for long shafts and continuous operation
Conveying systems (such as conveyor belts) usually require very long shafts, and the shaft bodies are prone to bending and deformation during operation due to their own weight and load. Applicable reasons:
Compensation for deflection: The spherical self-aligning function of the bearing can perfectly compensate for the deflection deformation of the long shaft during operation.
Easy installation: The modular design makes installation and maintenance very quick, reducing downtime.
For specific examples
Automatic production line conveyor belt: Logistics sorting system
Third: Textile and light industry machinery: Suitable for high speed and anti-entanglement
Textile machinery (such as spinning machines and weaving machinery) has high requirements for the rotational speed, noise and prevention of fiber entanglement of bearings.
Applicable reasons:
Pre-installed grease: An appropriate amount of grease has been filled at the factory. No cleaning is required before installation, and maintenance is simple.
Compact structure: It can be installed in narrow Spaces.
Specific examples: weaving machinery and blown film machines, pharmaceutical packaging machinery
Fourth. Construction and mining machinery: Capable of withstanding heavy loads and impacts
This type of equipment operates under the harshest conditions, often accompanied by high loads, strong impacts and difficulties in shaft alignment.
Applicable reasons:
Strong load-bearing capacity: It can withstand combined radial and axial loads mainly consisting of radial loads.
Durable and sturdy: Typically heavy-duty series (such as the UC300 series) and cast iron bearing housings are used, featuring high structural strength.
Specific examples: excavators and mining screening equipment; Tower crane supplement: Common forms of bearing housings
To adapt to different installation positions, it has various bearing housing forms, the most common of which are:
Vertical seat (P) : Most commonly used, suitable for horizontally installed shafts.
Square flange seat (F) : Installed on the side wall or frame of the equipment with 4 bolts.
Rhombic flange seat (FL) : such as UCFL210, installed in narrow corners with two bolts.
Slider seat (T) : It can be used in belt tensioning devices to adjust the tightness of the belt.
Overall, as long as the equipment needs to simplify the installation structure, allow a certain installation error, or operate in a dusty or vibrating environment, the mounted spherical plain bearing is a highly cost-effective choice.
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