{"product_id":"73162-h7-series-slip-yoke-7-8-inch-hex-bore","title":"73162 - H7 Series Slip Yoke 7\/8 Inch Hex Bore","description":"\u003cp\u003eBuyers Products H7 Series Slip Yoke is a strong, durable component for your flexible coupling needs. The yoke works best with other driveline components from Buyers Products and is compatible with medium duty driveline components from other major manufacturers. It comes in a variety of bore sizes and shapes to work with your system. The slip yoke is made of forged steel to provide strength and durability. It works with the NB7A U-Joint to provide smooth and continuous torque transfer. The H7 Series End Yoke is perfect for medium duty applications with the ability to handle up to 800 inch pounds of torque at 1,000 RPM (12 HP).\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;\"\u003eBore Dia\/Width (in.)\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e7\/8\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 Type\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eHex\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;\"\u003eCenter Line to End of Hub\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e5.000\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;\"\u003eFinish\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003ePlain\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;\"\u003eHub Diameter\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e1.563\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;\"\u003eKeyway Size (in.)\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e-\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;\"\u003eLubricator at\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e3\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;\"\u003eLubricator Thread\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003e1\/4-28 TAPERED\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;\"\u003eMaterial\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;\"\u003eSeries\u003c\/th\u003e\n\u003ctd style=\"padding:6px 10px; border:1px solid #e5e7eb;\"\u003eH7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTechnical Overview: Buyers Products H7 Series Slip Yoke with 7\/8 Inch Hex Bore\u003c\/h2\u003e\n\u003cp\u003eThe Buyers Products H7 Series Slip Yoke, featuring a precisely engineered 7\/8 inch hex bore, represents a critical component in the intricate architecture of power transmission systems. Designed for applications demanding robust performance in medium-duty environments, this slip yoke facilitates the essential function of accommodating dynamic driveline length variations while ensuring seamless and continuous torque transfer. Its designation within the H7 Series underscores a commitment to specific performance parameters and compatibility standards, making it an indispensable element for various industrial, commercial, and utility vehicle applications. The technical specifications of this component, including its specific bore dimensions, material composition, and performance ratings, highlight its suitability for systems requiring both flexibility and unwavering mechanical integrity.\u003c\/p\u003e\n\u003ch3\u003eThe Fundamental Role of a Slip Yoke in Driveline Dynamics\u003c\/h3\u003e\n\u003cp\u003eA driveline system, at its core, is tasked with transmitting rotational power from a prime mover (such as an engine or motor) to a driven component (like an axle or pump). In many dynamic systems, particularly those involving suspension travel, frame flex, or variations in relative component positioning, the distance between the input and output shafts is not constant. This is where the slip yoke becomes paramount. Unlike a fixed coupling, a slip yoke is specifically designed to permit axial movement along its mating shaft, thereby compensating for these length changes without inducing detrimental stress on bearings, universal joints (U-joints), or other driveline components. Without the ability to \"slip\" or telescope, a rigid driveshaft would either bind and potentially fracture under compression or pull apart under tension, leading to catastrophic system failure.\u003c\/p\u003e\n\u003cp\u003eThe H7 Series Slip Yoke is engineered to provide this crucial axial freedom. Its hub, which integrates the 7\/8 inch hex bore, slides along a corresponding hex-shaped shaft, effectively extending or contracting the overall length of the driveshaft assembly. This axial compensation mechanism is vital for maintaining the correct operating angles of the universal joints within the system, preventing excessive wear, vibration, and premature failure. The careful design of the slip mechanism ensures low friction during axial movement, critical for maintaining power transmission efficiency and preventing undesirable noise or heat generation. The synergy between the slip yoke and the universal joints is fundamental: the U-joints accommodate angular misalignment, while the slip yoke manages linear displacement, together forming a comprehensive solution for flexible power transfer.\u003c\/p\u003e\n\u003ch3\u003ePrecision Engineering: The 7\/8 Inch Hex Bore Advantage\u003c\/h3\u003e\n\u003cp\u003eThe selection of a 7\/8 inch hex bore for this H7 Series Slip Yoke is a deliberate engineering choice, offering distinct advantages in specific medium-duty power transmission contexts. Unlike splined or keyed bore designs, a hex bore provides a uniquely robust and efficient method for transmitting torsional loads. The hexagonal geometry inherently offers six points of contact between the yoke and its mating shaft, distributing stress more evenly across a larger surface area than a single keyway or even multiple splines in some configurations. This distribution significantly reduces localized stress concentrations, which are common failure points in highly stressed applications, thereby enhancing the component's fatigue life and overall durability.\u003c\/p\u003e\n\u003cp\u003eThe precision manufacturing of the 7\/8 inch hex bore ensures a tight, controlled fit with a corresponding hex shaft. This tight tolerance minimizes backlash, which is the amount of rotational play between mating components. Excessive backlash can lead to impact loading, noise, accelerated wear, and diminished control over the driven system. By maintaining minimal backlash, the H7 Series Slip Yoke facilitates precise and responsive torque transfer, crucial for applications where accurate power delivery is essential. Furthermore, the hex bore design simplifies assembly and disassembly processes. Alignment is inherently straightforward due to the distinct geometry, reducing installation time and potential for error in the field. The absence of complex spline cutting or keyway machining requirements can also contribute to the overall cost-effectiveness and reliability of the system in which it is integrated. The 7\/8 inch dimension indicates a standard size compatible with a broad range of medium-duty industrial and automotive hexagonal shafts, ensuring broad applicability and ease of sourcing mating components.\u003c\/p\u003e\n\u003ch3\u003eMaterial Science: The Strength of Cast Steel in Driveline Components\u003c\/h3\u003e\n\u003cp\u003eThe H7 Series Slip Yoke is constructed from high-quality Cast Steel, a material chosen for its exceptional balance of strength, ductility, and machinability, critical properties for components subjected to dynamic torsional and axial stresses. While some driveline components utilize forged steel for maximum grain alignment and ultimate strength, cast steel, when properly alloyed and heat-treated, offers comparable performance characteristics suitable for the specified medium-duty applications, often at a more economical production cost. The casting process allows for the creation of complex geometries with integrated features, such as the precise internal hex bore and the external U-joint ears, in a single manufacturing step, optimizing material distribution for strength and weight.\u003c\/p\u003e\n\u003cp\u003eThe specific grade of cast steel employed for the H7 Series Slip Yoke is selected to exhibit a high tensile strength, indicating its resistance to breaking under tension, and a superior yield strength, which defines the point at which the material begins to deform permanently. Equally important is its fatigue resistance, the ability to withstand repeated stress cycles without failure, a common mode of failure in rotating machinery components. The microstructure of the chosen cast steel provides excellent toughness, allowing it to absorb impact energy without fracturing, an essential attribute for driveline components that can experience sudden load changes. Furthermore, the inherent damping properties of steel help to attenuate vibrations, contributing to smoother operation and reduced noise levels throughout the driveline. The \"Plain\" finish indicates a raw material surface, ready for specific coatings or surface treatments as dictated by the operational environment, or perfectly suitable for applications where aesthetics are secondary to raw mechanical performance and where protection is provided by other means or is not critical.\u003c\/p\u003e\n\u003ch3\u003ePerformance Envelope: Torque, RPM, and Medium-Duty Classification\u003c\/h3\u003e\n\u003cp\u003eThe H7 Series Slip Yoke is rated to handle up to 800 inch-pounds of torque at 1,000 RPM, translating to approximately 12 horsepower (HP). These specifications are crucial in defining its operational envelope and classifying it squarely within the medium-duty application range. Torque is the rotational force applied, and 800 inch-pounds represents a significant capability for moving substantial loads or operating moderately powerful equipment. The rotational speed, 1,000 RPM, is a common operating speed for many industrial and vehicle power take-off (PTO) systems, auxiliary drives, and light to medium equipment powertrains. The derived horsepower rating of 12 HP provides a practical measure of the power this component can reliably transmit under continuous operation.\u003c\/p\u003e\n\u003cp\u003eUnderstanding these ratings is paramount for engineers and system integrators. Exceeding the specified torque or RPM limits can lead to material fatigue, deformation, or catastrophic failure, whereas under-specifying the component can result in inefficient power transfer or over-engineered costs. The \"medium duty\" classification implies that this slip yoke is designed for applications that experience moderate cyclical loads, occasional shock loads, and sustained operation within the specified parameters, rather than continuous heavy-duty operation or intermittent extreme peak loads typical of heavy industrial or off-highway machinery. This precise rating allows for confident integration into systems such as agricultural implements, specialized utility vehicles, material handling equipment, and certain industrial pump drives, where consistent performance under predictable load conditions is expected.\u003c\/p\u003e\n\u003ch3\u003eSystem Integration and Universal Joint Compatibility (NB7A)\u003c\/h3\u003e\n\u003cp\u003eOptimal performance of any driveline component is contingent upon its seamless integration within a holistic system. The H7 Series Slip Yoke is specifically designed for compatibility with Buyers Products' driveline components, ensuring a harmonious fit and functional synergy. Moreover, its design adheres to industry standards, rendering it compatible with medium-duty driveline components from other major manufacturers. This cross-compatibility is invaluable for repair, maintenance, and custom system builds, offering flexibility in component sourcing without compromising performance or safety.\u003c\/p\u003e\n\u003cp\u003eA key aspect of this compatibility is its intended pairing with the NB7A U-Joint. The universal joint is a pivotal component in any driveshaft assembly, accommodating angular misalignment between shafts. The NB7A designation refers to a specific series or size standard for universal joints. This precise pairing is critical for maintaining the kinematic properties of the driveline. Using a U-joint that is either under-specified or over-specified for the yoke can lead to premature wear of the U-joint bearings, increased vibration, or even failure of the yoke ears themselves. The H7 Series Slip Yoke's design, including its Center Line to End of Hub dimension of 5.000 inches and Hub Diameter of 1.563 inches, is precisely engineered to mate with the NB7A U-Joint, ensuring proper bearing cap retention, lubrication, and overall rotational balance. This precision in mating components is foundational to achieving smooth, continuous torque transfer and minimizing driveline oscillations, which are detrimental to both component longevity and overall system efficiency.\u003c\/p\u003e\n\u003ch3\u003eMaintenance, Lubrication, and Longevity\u003c\/h3\u003e\n\u003cp\u003eThe longevity and reliable operation of the H7 Series Slip Yoke are significantly influenced by appropriate maintenance practices, particularly lubrication. The specification includes a \"Lubricator at 3\" position and a \"1\/4-28 TAPERED\" lubricator thread, indicating the presence of a grease zerk (fitting) for easy lubrication access. The number \"3\" likely refers to the clock position (e.g., 3 o'clock) of the grease fitting on the hub, ensuring it is accessible after installation for routine servicing.\u003c\/p\u003e\n\u003cp\u003eLubrication plays a multi-faceted role in the performance of a slip yoke. Firstly, it minimizes friction between the internal surface of the hex bore and the mating hex shaft, facilitating smooth axial movement and preventing galling or binding, especially under load or during rapid changes in driveline length. Secondly, the lubricant creates a protective film that helps to prevent wear on the mating surfaces, extending the operational life of both the yoke and the shaft. Thirdly, a properly sealed and lubricated slip yoke helps to prevent the ingress of contaminants such as dirt, dust, and moisture, which can accelerate wear and corrosion. Fourthly, it assists in dissipating heat generated by friction, maintaining optimal operating temperatures for the component. Regular greasing with a compatible, high-quality chassis grease is essential to replenish the lubricant supply, flush out old grease and contaminants, and ensure the continuous protection of the critical sliding surfaces. Neglecting lubrication can lead to stiffening of the slip mechanism, increased friction, power loss, and eventually premature component failure, undermining the entire driveline's integrity. Adherence to manufacturer-recommended lubrication schedules and using specified lubricant types are critical for maximizing the service life of the H7 Series Slip Yoke.\u003c\/p\u003e\n\u003ch3\u003eDimensional Precision and Manufacturing Excellence\u003c\/h3\u003e\n\u003cp\u003eThe listed specifications, such as a Center Line to End of Hub of 5.000 inches and a Hub Diameter of 1.563 inches, are not merely arbitrary numbers but are critical design parameters that define the form, fit, and function of the H7 Series Slip Yoke. The \"Center Line to End of Hub\" measurement is crucial for driveshaft length calculations, ensuring proper engagement depth with the transmission or transfer case output shaft, and maintaining correct U-joint phasing and operating angles. This dimension dictates the minimum and maximum operational lengths of the driveshaft assembly and must be precisely matched to the overall driveline design to prevent binding or over-extension.\u003c\/p\u003e\n\u003cp\u003eThe \"Hub Diameter\" of 1.563 inches is another vital dimension, directly influencing the strength and rigidity of the yoke hub and its ability to house the hex bore and provide structural support around the sliding mechanism. These precise dimensions are a testament to the meticulous manufacturing processes employed by Buyers Products. Advanced manufacturing techniques, including precision casting, machining, and quality control procedures, are utilized to ensure that each H7 Series Slip Yoke conforms to strict dimensional tolerances. This adherence to tight tolerances is indispensable for preventing vibration, ensuring optimal alignment, and maximizing the lifespan of the entire driveline system. The engineering behind these dimensions considers factors such as stress distribution under various loads, material properties, and thermal expansion, all contributing to a product that performs reliably under demanding conditions. Furthermore, the absence of a \"Keyway Size\" entry reinforces the hex bore's inherent design advantage, eliminating a potential point of weakness or stress concentration often associated with traditional keyway interfaces in high-torque applications.\u003c\/p\u003e\n\u003ch3\u003eApplications and Versatility of the H7 Series Slip Yoke\u003c\/h3\u003e\n\u003cp\u003eGiven its robust design, medium-duty rating, and specific 7\/8 inch hex bore configuration, the H7 Series Slip Yoke finds extensive application across a diverse range of machinery and vehicles. Its primary utility lies in systems where power must be transmitted reliably while accommodating dynamic changes in driveline length. Typical applications include:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAgricultural Equipment:\u003c\/strong\u003e Used in PTO (Power Take-Off) drives for various implements such as tillers, mowers, spreaders, and small balers, where the implement's position relative to the tractor can change during operation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUtility and Municipal Vehicles:\u003c\/strong\u003e Incorporated into drivelines for auxiliary equipment on utility trucks, service vehicles, and municipal maintenance vehicles, such as booms, winches, or specialized attachments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLight Industrial Machinery:\u003c\/strong\u003e Employed in conveyor systems, pump drives, small generators, and other industrial equipment where the driven component may have slight translational movement or requires modular assembly.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConstruction Equipment (Medium Duty):\u003c\/strong\u003e Found in smaller excavators, skid steers, and compact loaders for auxiliary drives or specific implement attachments that require flexible power transmission.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpecialized Off-Highway Vehicles:\u003c\/strong\u003e Utilized in custom-built vehicles or those designed for challenging terrains where chassis flex and suspension travel necessitate a robust slip mechanism.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe versatility of the H7 Series Slip Yoke is further enhanced by its compatibility with a range of bore sizes and shapes within the series, as mentioned in the initial description. This adaptability ensures that designers and engineers can select the most appropriate slip yoke configuration for their specific driveline requirements, maintaining component standardization while meeting diverse application demands. The 7\/8 inch hex bore variant, specifically, caters to systems designed around hexagonal shafting, which is often favored for its positive engagement, ease of assembly, and resistance to rotational slip.\u003c\/p\u003e\n\u003ch3\u003eConclusion: A Foundation of Reliability for Medium-Duty Drivelines\u003c\/h3\u003e\n\u003cp\u003eThe Buyers Products H7 Series Slip Yoke with a 7\/8 inch hex bore stands as a testament to precision engineering and robust material selection. Its design meticulously addresses the inherent challenges of dynamic power transmission systems by providing essential axial compensation while maintaining consistent and efficient torque transfer. From its high-strength cast steel construction to its precisely dimensioned hex bore and compatibility with the NB7A U-Joint, every aspect of this component is geared towards maximizing reliability and longevity in demanding medium-duty applications.\u003c\/p\u003e\n\u003cp\u003eThe capability to manage 800 inch-pounds of torque at 1,000 RPM (12 HP) firmly establishes its performance credentials, assuring users of its ability to withstand the rigors of sustained operation. Furthermore, the inclusion of a readily accessible lubricator fitting with a 1\/4-28 tapered thread underscores a design philosophy centered on maintainability and extended service life. By integrating the H7 Series Slip Yoke into appropriate driveline systems, engineers and operators can achieve optimal performance, minimize wear and tear on adjacent components, and ensure the smooth, uninterrupted operation of their machinery. This product is not merely a part; it is a critical enabler of mechanical motion, embodying the quality and durability expected from Buyers Products.\u003c\/p\u003e","brand":"buyersproductscompany","offers":[{"title":"Default Title","offer_id":62449333141875,"sku":"73162","price":35.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/9513\/9187\/files\/H7_20Series_20Slip_20Yoke_profile_5f55b877-3a4f-461f-b95a-b38c7f5c06f9.jpg?v=1768594884","url":"https:\/\/titustrucksaccessories.com\/products\/73162-h7-series-slip-yoke-7-8-inch-hex-bore","provider":"Titus Trucks Accessories ","version":"1.0","type":"link"}