{"product_id":"p12-3-4-inch-shaft-diameter-eccentric-locking-collar-style-pillow-block-bearing","title":"P12 - 3\/4 Inch Shaft Diameter Eccentric Locking Collar Style PIllow Block Bearing","description":"\u003cp\u003eBuyers Products Eccentric Locking Collar Style Pillow Block Bearings are equipped to handle high-speed applications without risking drive shaft slippage.    The driveline-grade steel bearing is mounted in a cast iron housing, which helps make the pillow blocks rugged and durable. The included grease fitting ensures ease of maintenance for continual smooth operation. The simple 2 hole mounting design makes installation easy even in tight places. The eccentric locking collar means that the drive shaft will not slip, even at high RPMs.   The pillow block has a self-aligning design that allows for some shaft misalignment.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse; width:100%; font-size:14px;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBase Thickness\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e0.63\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBearing Insert Material\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBearing Insert Type\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eSelf Aligning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBolt Size\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e0.375\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBolt Slot Length\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e0.750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBolt Slot Width\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e0.500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eBore Diameter\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e0.750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eGreasable (y\/n)\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eHousing Finish\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003ePowder-Coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eHousing Material\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eCast Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eLocking Type\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eEccentric Locking Collar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eMounting Surface to Shaft Center\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e1.313\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eOverall Depth\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e1.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eOverall Height\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e2.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left; padding:6px 10px; border:1px solid #e5e7eb; background:#f9fafb;\"\u003eOverall Width\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e5.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAdvanced Technical Overview: 3\/4 Inch Shaft Diameter Eccentric Locking Collar Style Pillow Block Bearing\u003c\/h2\u003e\n\u003cp\u003eThis comprehensive technical description details the engineering, performance characteristics, and application suitability of the 3\/4 Inch Shaft Diameter Eccentric Locking Collar Style Pillow Block Bearing. Designed by Buyers Products, this bearing assembly represents a robust solution for demanding industrial applications requiring reliable shaft support, particularly in high-speed operational environments where drive shaft integrity is paramount.\u003c\/p\u003e\n\n\u003ch3\u003eArchitectural Design and Material Science\u003c\/h3\u003e\n\u003cp\u003eThe core of this pillow block bearing’s superior performance lies in its meticulously engineered components and selection of high-grade materials. The assembly comprises a self-aligning bearing insert securely housed within a durable cast steel housing, united by an eccentric locking collar mechanism. Each element is chosen to contribute to the overall resilience, operational efficiency, and extended service life of the unit.\u003c\/p\u003e\n\n\u003ch4\u003eHousing Construction: Cast Steel with Powder-Coat Finish\u003c\/h4\u003e\n\u003cp\u003eThe bearing housing, a critical component for structural integrity and load distribution, is fabricated from cast steel. Cast steel offers a superior combination of strength, ductility, and impact resistance compared to traditional cast iron, making it exceptionally well-suited for heavy-duty applications where shock loads or vibrational stresses may occur. Its inherent material properties ensure excellent dimensional stability and resistance to deformation under sustained operational forces. The housing's dimensions, including an Overall Height of 2.50 inches, an Overall Width of 5.00 inches, and an Overall Depth of 1.50 inches, are precisely engineered to provide robust support and ease of integration into various machinery frames.\u003c\/p\u003e\n\u003cp\u003eFurther enhancing its durability, the cast steel housing features a high-quality Powder-Coat finish. This protective coating provides an excellent barrier against environmental aggressors such as moisture, corrosive chemicals, and abrasive particles. The powder coat not only improves the aesthetic appeal of the bearing unit but, more importantly, significantly extends its lifespan by preventing rust and corrosion, which could otherwise compromise the housing's structural integrity and ultimately lead to premature failure. This finishing process ensures the bearing maintains its operational effectiveness even in challenging industrial conditions.\u003c\/p\u003e\n\n\u003ch4\u003eBearing Insert: Driveline-Grade Carbon Steel with Self-Aligning Capability\u003c\/h4\u003e\n\u003cp\u003eThe heart of the pillow block is its bearing insert, manufactured from driveline-grade carbon steel. Carbon steel is selected for its high hardness, wear resistance, and superior load-carrying capabilities. This specific grade is particularly crucial for driveline applications, where bearings are subjected to significant radial and axial forces, as well as torsional stresses from power transmission. The precision machining of the carbon steel races and rolling elements (typically deep groove ball bearings in this configuration) ensures minimal friction and efficient power transfer.\u003c\/p\u003e\n\u003cp\u003eA distinctive feature of this bearing insert is its Self Aligning design. This innovative characteristic allows the inner ring of the bearing to pivot slightly within the outer ring, accommodating a degree of angular misalignment between the shaft and the bearing housing support structure. While ideal shaft alignment is always recommended for optimal bearing life, the self-aligning feature is invaluable for compensating for:\u003c\/p\u003e\n\u003col\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInitial Installation Misalignment:\u003c\/strong\u003e Imperfections in machinery frames or mounting surfaces, or slight errors during assembly.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDynamic Misalignment:\u003c\/strong\u003e Flexing or settling of the machine frame during operation, thermal expansion\/contraction, or minor shaft deflections under load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe self-aligning capability significantly reduces edge loading on the rolling elements, mitigates premature wear, and prevents undue stress concentrations on the shaft and bearing components. This translates directly to enhanced reliability, reduced maintenance frequency, and a substantially longer operational lifespan for the entire driveline system. The bore diameter of 0.750 inches precisely matches the specified shaft diameter, ensuring a snug fit for optimal performance.\u003c\/p\u003e\n\n\u003ch3\u003eEccentric Locking Collar Mechanism: Unrivaled Shaft Retention\u003c\/h3\u003e\n\u003cp\u003eThe primary method of shaft attachment in this pillow block bearing is the Eccentric Locking Collar. This mechanism is a key differentiator, providing a secure and vibration-resistant grip on the shaft, particularly vital for \"high-speed applications without risking drive shaft slippage.\"\u003c\/p\u003e\n\u003cp\u003eThe eccentric locking collar operates on the principle of wedging. The inner ring of the bearing features an eccentric extension, while the locking collar has a corresponding eccentric bore. When the collar is rotated relative to the bearing's inner ring, the eccentric features engage, creating an interference fit that effectively clamps down on the shaft. A set screw, typically located on the collar, is then tightened to secure the collar's position, preventing it from loosening under dynamic loads or vibrations.\u003c\/p\u003e\n\u003cp\u003eThe advantages of an eccentric locking collar over other common locking methods (e.g., set screws directly into the shaft, or concentric collars with adapter sleeves) are substantial:\u003c\/p\u003e\n\u003col\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuperior Concentricity:\u003c\/strong\u003e Unlike set screws that can cause slight shaft deformation or imbalance, the eccentric locking collar provides a more uniform and concentric grip around the shaft. This is crucial for minimizing vibration and noise, especially at high RPMs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnhanced Holding Power:\u003c\/strong\u003e The wedging action distributes clamping forces more evenly and effectively over a larger surface area of the shaft, resulting in significantly higher resistance to slippage compared to single or double set screws. This direct engagement is paramount for maintaining phase and timing in power transmission systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eResistance to Vibration and Reversing Loads:\u003c\/strong\u003e The inherent mechanical advantage of the eccentric design makes it highly resistant to loosening under severe vibration or frequent changes in shaft direction. This ensures that the drive shaft maintains its position relative to the bearing, preserving alignment and operational integrity.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEase of Installation and Removal:\u003c\/strong\u003e While providing a robust lock, the eccentric collar mechanism is designed for relatively straightforward installation and removal, facilitating maintenance and component replacement.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe Locking Type being \"Eccentric Locking Collar\" is a direct testament to the product's design philosophy centered on maximum reliability and performance in demanding driveline applications where positive shaft retention is non-negotiable.\u003c\/p\u003e\n\n\u003ch3\u003eMaintenance and Longevity: Greasable Design\u003c\/h3\u003e\n\u003cp\u003eProactive maintenance is integral to maximizing the lifespan and efficiency of any rotating machinery component, and this pillow block bearing is engineered with this principle in mind. The designation \"Greasable (y\/n): Yes\" confirms the inclusion of a conveniently located grease fitting. This allows for the periodic replenishment of lubricant within the bearing assembly.\u003c\/p\u003e\n\u003cp\u003eProper lubrication performs several critical functions:\u003c\/p\u003e\n\u003col\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFriction Reduction:\u003c\/strong\u003e Creates a hydrodynamic film between the rolling elements and raceways, minimizing metal-on-metal contact and reducing energy loss due to friction.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHeat Dissipation:\u003c\/strong\u003e Carries away heat generated by friction, preventing thermal degradation of components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCorrosion Protection:\u003c\/strong\u003e Forms a protective barrier against moisture and contaminants, safeguarding the bearing surfaces.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eContaminant Exclusion:\u003c\/strong\u003e The positive pressure created by fresh grease helps flush out old lubricant and prevents the ingress of dust, dirt, and other environmental particles into the bearing chamber.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eRegular greasing, as per recommended schedules (which would typically depend on application speed, load, and environmental conditions), ensures continual smooth operation, minimizes wear, and prevents premature bearing failure. The ease of access to the grease fitting simplifies this essential maintenance task, contributing to a lower total cost of ownership over the bearing's service life.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation and Integration Features\u003c\/h3\u003e\n\u003cp\u003eEase of installation is a significant consideration in industrial design, impacting both initial setup time and long-term maintenance. This pillow block bearing is designed with a \"simple 2 hole mounting design,\" facilitating straightforward integration into various equipment frames and mounting plates. The physical dimensions supporting this are critical for designers and installers:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMounting Surface to Shaft Center:\u003c\/strong\u003e 1.313 inches, providing a standard reference for shaft height.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBase Thickness:\u003c\/strong\u003e 0.63 inches, ensuring a robust mounting platform.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBolt Size:\u003c\/strong\u003e 0.375 inches (3\/8 inch), indicating common fastener requirements.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBolt Slot Length:\u003c\/strong\u003e 0.750 inches.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBolt Slot Width:\u003c\/strong\u003e 0.500 inches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe inclusion of bolt slots rather than fixed holes offers a crucial advantage: adjustability. These slots allow for minor lateral adjustments during installation, accommodating slight variations in mounting hole centers or enabling precise alignment of multiple bearings supporting a single shaft. This flexibility reduces installation complexity and minimizes the risk of introducing additional stresses into the system due to misaligned mounting points. The standardized bolt size further simplifies hardware procurement and ensures compatibility with common industrial fasteners.\u003c\/p\u003e\n\u003cp\u003eThe compact yet robust design, with an Overall Depth of 1.50 inches, allows for effective placement \"even in tight places,\" a common challenge in industrial machinery design where space optimization is critical. The combination of easy mounting, self-aligning capability, and compact dimensions makes this bearing highly adaptable for a wide range of applications.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance Capabilities and Application Versatility\u003c\/h3\u003e\n\u003cp\u003eThis 3\/4 Inch Shaft Diameter Eccentric Locking Collar Style Pillow Block Bearing is engineered for a diverse array of industrial and mobile equipment applications where dependable shaft support and high-speed operation are non-negotiable. Its \"driveline-grade steel bearing\" and robust \"cast steel housing\" denote a construction capable of withstanding significant operational stresses.\u003c\/p\u003e\n\u003cp\u003eTypical applications include, but are not limited to:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConveyor Systems:\u003c\/strong\u003e Providing critical support for drive and idler shafts in various material handling applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAgricultural Machinery:\u003c\/strong\u003e Supporting power take-off (PTO) shafts, augers, and other rotating components in demanding outdoor environments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConstruction Equipment:\u003c\/strong\u003e Essential for supporting shafts in compactors, mixers, and other heavy-duty machinery.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackaging Machinery:\u003c\/strong\u003e Ensuring precise and reliable operation in high-speed automated lines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHVAC Systems:\u003c\/strong\u003e Supporting fan shafts and blower assemblies in industrial air handling units.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine and Automotive Auxiliary Systems:\u003c\/strong\u003e Where robustness against vibration and corrosion resistance are key.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe design ensures minimal operational runout and vibration, contributing to quieter operation and reduced fatigue on adjacent components. The ability to handle \"high-speed applications\" without \"drive shaft slippage\" is a direct benefit of the eccentric locking collar, making it suitable for systems where rotational speed is a primary performance parameter. Furthermore, the self-aligning feature significantly reduces the precision required for initial setup, providing tolerance for dynamic operating conditions and extending the bearing’s operational life.\u003c\/p\u003e\n\n\u003ch3\u003eConclusion\u003c\/h3\u003e\n\u003cp\u003eThe Buyers Products 3\/4 Inch Shaft Diameter Eccentric Locking Collar Style Pillow Block Bearing represents a high-performance, technically advanced solution for robust shaft support. Its combination of a driveline-grade carbon steel self-aligning bearing insert, a durable powder-coated cast steel housing, and the secure eccentric locking collar mechanism ensures exceptional reliability, prolonged service life, and efficient operation in challenging industrial environments. The integrated grease fitting facilitates straightforward maintenance, while the two-hole mounting design with slotted bolt holes simplifies installation and offers practical adjustability. This bearing is an optimal choice for engineers and procurement specialists seeking a dependable, high-integrity component for critical power transmission and rotational applications where performance under high speeds and resistance to shaft slippage are paramount considerations.\u003c\/p\u003e","brand":"buyersproductscompany","offers":[{"title":"Default Title","offer_id":62449338155379,"sku":"P12","price":14.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/9513\/9187\/files\/P16_front.jpg?v=1768594936","url":"https:\/\/titustrucksaccessories.com\/products\/p12-3-4-inch-shaft-diameter-eccentric-locking-collar-style-pillow-block-bearing","provider":"Titus Trucks Accessories ","version":"1.0","type":"link"}