UCFL Series

UCFL Series Pillow Block Bearings - Dual-Bolt Flange Configuration

The UCFL Series of pillow block bearings features a cast iron housing and a spherical outer ring on the bearing insert, designed for applications requiring alignment accommodation and robust mounting. The UCFL series incorporates a dual-bolt flange configuration, providing stability and load distribution in a compact form factor. The bearing insert is secured within the housing with a setscrew lock. This product is engineered to meet industrial standards, offering a reliable solution for power transmission systems.

Product Features

• Dual-Bolt Flange Housing: The UCFL housing is cast from high-grade iron, providing structural integrity and resistance to deformation under load. The two-bolt mounting pattern facilitates secure and straightforward installation on equipment frames.
• Spherical Outer Ring: The bearing insert has a spherical outer diameter, which allows for initial misalignment of the shaft during mounting. This feature accommodates static angular misalignment up to 2° without compromising performance.
• Setscrew Locking Mechanism: The inner ring of the bearing is secured to the shaft using two setscrews positioned at a 120° angle. This locking method ensures a firm grip on the shaft, preventing slippage and maintaining concentricity under operational loads.
• Pre-Lubricated and Sealed: Each bearing is pre-lubricated with a standard grease for immediate use and is equipped with contact seals to prevent contamination ingress and retain lubricant, extending service life in various operating environments.

Application Areas

This product is a technical component for use in the following mechanical systems and equipment:

• Conveyor systems and material handling equipment.
• Agricultural machinery, including tillage and harvesting implements.
• Packaging and bottling lines.
• Textile manufacturing machinery.
• HVAC fans and industrial blowers.

Common Procurement Inquiries

1. What is the difference between UCFL and UCF pillow block bearings, and when should I select one over the other?

The primary difference is the mounting configuration. The UCFL series features a two-bolt, elliptical flange housing, whereas the UCF series uses a four-bolt, square flange housing. The UCFL is typically used in applications where mounting space is restricted or where a two-bolt pattern is sufficient for the load requirements, such as on vertical surfaces or machinery frames. Conversely, the UCF series provides a more stable, higher-load capacity mounting due to its four-bolt pattern. Selection should be based on the specific load requirements and available mounting space of your design. For a detailed load analysis, our technical support team can assist in selecting the appropriate series and bearing size.

2. How do I determine the correct bearing size for my shaft and prevent premature failure due to misalignment or vibration?

Selecting the correct bearing size, specifically the bore diameter (ID), is critical to ensuring proper fit on the shaft. This prevents common issues like bearing creep or shaft damage. Premature failure due to misalignment is mitigated by the UCFL bearing's spherical outer ring, which accommodates minor initial static misalignment. However, excessive dynamic misalignment or vibration beyond the bearing's design capacity can lead to reduced service life. To prevent this, calculate the application's actual load, operating speed, and temperature. You should also verify that the shaft tolerance and housing bore are within specified limits. For complex applications or to validate your calculations, consult the bearing's load rating tables or request a consultation with one of our application engineers.