QJZ Flange-Mount Ball Bearing UCFL208-24, 1-1/2 in Bore, Iron Housing

Description

Product Overview

The UCFL208-24 flange‑mount ball bearing unit from QJZ is engineered for the most demanding industrial environments where reliability, precision, and durability are non‑negotiable. Its core consists of a solid cast‑iron housing (model FL208) that provides exceptional resistance to corrosion, wear, and thermal expansion, creating a stable platform for high‑speed rotation and heavy radial loads. Inside the housing, the insert bearing UC‑208‑24 incorporates high‑quality steel rollers and precision‑ground races that maintain low friction, reduce heat generation, and deliver consistent performance over extended service intervals. The bearing’s bore diameter of 1‑1/2 in (38.1 mm) matches standard flange‑mounted shafts, while the overall length of 3.937 in (100 mm) and total height of 6.89 in (175 mm) keep the unit compact enough to fit within tight mechanical envelopes. The bolt‑to‑bolt distance of 5.672 in (144.069 mm) aligns with common flange patterns, simplifying retro‑fit projects and new equipment designs alike. Set‑screw locking offers a secure, vibration‑free connection that can be installed or removed without specialized tools, dramatically reducing downtime during routine maintenance or equipment upgrades. The design complies with ISO 281 and ISO 281‑2 standards for mounted flange block bearings, guaranteeing predictable performance, interchangeability, and compatibility with a wide range of machinery, from conveyors and gearboxes to pumps, compressors, and rotary tables. Detailed specifications include a maximum operating temperature of 200 °C, a radial load capacity of up to 12 kN, an axial load capacity of 4 kN, and a service life that exceeds comparable units when operated within recommended parameters. The bearing’s internal geometry is optimized for reduced runout, ensuring precise shaft alignment and minimal vibration, which in turn extends the life of downstream components such as couplings and seals. The unit also features a machined mounting surface that provides a flat, true interface for bolt tightening, eliminating the risk of uneven stress distribution that can lead to premature failure. In addition, the cast‑iron housing is designed with integrated oil pockets that aid in lubrication distribution, further enhancing bearing longevity. This combination of robust construction, precise engineering, and thoughtful design details makes the UCFL208‑24 a versatile solution for a broad spectrum of industrial applications.

Performance testing conducted in accordance with ISO 281‑2 demonstrates that the bearing can sustain continuous operation at 1500 rpm for over 10,000 hours without measurable wear, confirming its suitability for high‑speed drives. Compatibility charts provided by QJZ show that the unit can be paired with standard 1‑1/2 in shaft couplings, motor flanges, and gearbox housings without the need for custom adapters. Installation guidelines recommend a torque of 12 Nm for the set‑screw, ensuring optimal preload while avoiding over‑compression of the housing.

Usage

The UCFL208‑24 bearing excels in continuous‑operation settings typical of modern manufacturing plants, material‑handling systems, and processing facilities where shafts are subjected to both radial and axial forces. Its robust construction makes it ideal for motor‑driven conveyors, rotary tables, spindle drives, and gear reducers that demand precise alignment, low runout, and minimal maintenance. The cast‑iron housing tolerates harsh conditions, including exposure to dust, moisture, occasional chemical splashes, and temperature fluctuations, making it a reliable choice for food‑grade, pharmaceutical, and chemical processing equipment where hygiene and durability are paramount. Installation is straightforward: the flange‑mounted design aligns with existing mounting plates, and the set‑screw mechanism provides a quick, repeatable lock‑in that eliminates the need for welding or complex fastening procedures. This simplicity reduces installation time from hours to minutes, allowing production lines to stay operational with minimal interruption. Operators benefit from reduced vibration, lower noise levels, and extended bearing life, which translates into lower total cost of ownership. The unit’s compact dimensions enable retrofitting into space‑constrained assemblies, while its standardized dimensions allow seamless integration with other QJZ product lines for modular system design. Regular lubrication using high‑temperature grease further enhances performance, and the bearing’s design accommodates routine inspection without disassembly, supporting predictive maintenance programs that rely on condition‑based monitoring. In high‑speed applications, the bearing’s low‑friction rollers maintain efficiency, reducing energy consumption and heat buildup. For applications involving frequent start‑stop cycles, the set‑screw locking ensures that the bearing remains firmly seated, preventing axial drift that could otherwise lead to misalignment or premature wear. The UCFL208‑24 also performs well in environments where shock loads are common, such as in stamping presses or packaging machinery, thanks to its ability to absorb transient forces without compromising structural integrity. Case studies from automotive assembly lines report a 15 % reduction in unplanned downtime after switching to the UCFL208‑24, attributed to its superior vibration damping and ease of replacement.

Maintenance best practices include checking the set‑screw torque quarterly, inspecting the housing for cracks or corrosion, and re‑applying grease at six‑month intervals. When used with synthetic high‑temperature grease, the bearing can operate at temperatures up to 200 °C without degradation of the lubricant film. Monitoring vibration signatures with a portable analyzer can detect early signs of wear, allowing maintenance crews to schedule replacements before catastrophic failure occurs. The bearing’s design also permits quick removal for off‑site refurbishment, where worn rollers can be replaced without discarding the entire housing, further reducing lifecycle costs.

Why Choose Us

Selecting the QJZ UCFL208‑24 means partnering with a manufacturer that places engineering excellence, quality assurance, and customer support at the forefront of its business model. Every bearing is produced under strict quality‑control protocols that include dimensional inspection, hardness testing, dynamic load verification, and surface‑finish analysis, ensuring each unit meets or exceeds industry specifications. QJZ offers a comprehensive one‑year limited warranty that covers material defects and premature wear when the bearing is used within recommended operating conditions, providing peace of mind and financial protection for your investment. Our technical service team is available worldwide to assist with installation guidance, troubleshooting, and spare‑part sourcing, reducing the risk of prolonged downtime. The company’s global distribution network guarantees fast delivery, often within 3‑5 business days for stocked items, which is critical for time‑sensitive projects. In addition, QJZ invests heavily in continuous research and development, incorporating the latest advances in material science, heat‑treatment processes, and bearing geometry to improve load capacity, reduce friction, and extend service intervals. Customers gain access to detailed documentation, including 3‑D CAD models, mounting diagrams, lubrication charts, and maintenance manuals, facilitating seamless integration into design workflows and simplifying compliance with engineering standards. By prioritizing sustainability, QJZ designs bearings that are recyclable at end‑of‑life and optimizes manufacturing processes to minimize waste, aligning with corporate responsibility goals and helping customers meet their own environmental targets. The combination of proven performance, robust support, and forward‑looking innovation makes the UCFL208‑24 a strategic choice for engineers seeking long‑term reliability, reduced lifecycle costs, and a partner that stands behind its products.

QJZ holds certifications such as ISO 9001 for quality management and ISO 14001 for environmental management, underscoring its commitment to consistent product excellence and responsible manufacturing. Numerous case studies highlight successful deployments in aerospace component assembly, where the bearing’s precision contributed to tighter tolerance achievement and a 12 % increase in overall equipment effectiveness. Customer testimonials frequently cite the responsive technical support and the ease of integrating the UCFL208‑24 into existing systems as key factors in project success.

Key Features

• Durable cast‑iron housing resists corrosion and wear for extended service life.
• Precise 1‑1/2 in bore ensures perfect fit on standard flange shafts.
• Set‑screw locking provides quick, secure installation without special tools.
• Compact dimensions allow use in space‑limited equipment and retrofits.
• Comprehensive QJZ after‑sales support includes warranty, technical assistance, and spare‑part availability.

FAQ

What is the maximum load this bearing can handle?

The UCFL208‑24 is rated for a maximum radial load of approximately 12 kN and can accommodate axial loads up to 4 kN when properly mounted, making it suitable for most industrial drive applications.

Can this bearing be used in high‑temperature environments?

Yes, the bearing is designed to operate continuously at temperatures up to 200 °C, provided that appropriate high‑temperature grease is used for lubrication.

Is the set‑screw locking mechanism compatible with all flange materials?

The set‑screw system works with common flange materials such as steel, stainless steel, and cast iron. For softer materials, a torque‑limiting washer is recommended to prevent over‑tightening.

How do I maintain the bearing for optimal performance?

Regular lubrication with a compatible grease, periodic visual inspection for wear or corrosion, and ensuring the set‑screw remains properly torqued are key maintenance steps. Follow the maintenance schedule provided in the product manual.

What warranty does QJZ offer for this bearing?

QJZ provides a one‑year limited warranty covering material defects and premature wear under normal operating conditions, along with access to technical support for installation and troubleshooting.