B241103 - B1310 Series End Yoke 1-1/4 Inch Round Bore With No Keyway

Buyers Products B1310 Series End Yoke works seamlessly with heavy duty PTO driveline components in order to deliver reliable flexible coupling. The yoke is compatible with other major manufacturers' heavy duty driveline components. It comes in a variety of bore sizes and shapes to work with your system. The yoke is made of forged steel for strength and durability. It works with the Buyers Products 5153XBA U-joints to provide smooth and continuous torque transfer. The B1310 Series End Yoke is perfect for heavy duty applications with the ability to handle up to 1560 inch pounds of torque at 1000 RPM continuous duty (approximately 25 HP).

Specifications

The Buyers Products B1310 Series End Yoke, featuring a 1-1/4 Inch Round Bore without a Keyway, represents a critical component in heavy-duty Power Take-Off (PTO) driveline systems, engineered for the rigorous demands of industrial and commercial applications. This specialized end yoke is designed to facilitate robust and reliable power transmission from a power source to an auxiliary implement, ensuring operational continuity and efficiency in challenging environments. Its construction and precise specifications position it as a superior choice for mechanical power transfer where durability, strength, and system integration are paramount.

At the core of the B1310 Series End Yoke’s design is its foundational role in flexible coupling. As an integral part of a universal joint (U-joint) assembly, the end yoke connects to a shaft, typically from a gearbox or PTO output, and provides the attachment points for the U-joint’s cross and bearings. This connection allows for angular misalignment between rotating shafts while transmitting torque smoothly and continuously. The B1310 series is specifically optimized for heavy-duty applications, where substantial power outputs and dynamic loads are common. Its compatibility extends across a wide spectrum of major manufacturers' heavy-duty driveline components, offering unparalleled versatility and ease of integration into existing or new systems, thereby streamlining inventory management and facilitating repairs.

The critical distinguishing feature of this particular B1310 Series End Yoke is its 1-1/4 inch (1.250 in.) round bore and the explicit absence of a keyway or set screw mechanism for shaft retention. This bore configuration necessitates a precise, interference fit (e.g., press fit) or a permanent joining method such as welding to secure the yoke to the shaft. For applications employing an interference fit, the shaft must be machined to exacting tolerances to ensure a secure, slip-free rotational engagement capable of transmitting the specified torque without fretting corrosion or rotational slippage. Alternatively, in scenarios where a permanent connection is desired and permissible, welding the yoke to the shaft offers an extremely robust and fail-safe attachment. The selection of the attachment method should be carefully considered based on the application's specific requirements for serviceability, load conditions, and environmental factors. Precision engineering in the shaft preparation is paramount for ensuring the integrity and longevity of the driveline connection, irrespective of the chosen attachment technique. The specified 1.250-inch bore diameter indicates a common shaft size in many heavy-duty machinery configurations, ensuring broad applicability.

Material science plays a pivotal role in the performance characteristics of the B1310 Series End Yoke. Fabricated from forged steel, this component exemplifies superior material integrity and mechanical properties. The forging process, which involves shaping solid metal through localized compressive forces using hammers or presses, significantly refines the grain structure of the steel. Unlike cast components that can suffer from internal voids, porosity, and inconsistent grain structure, forged steel exhibits a continuous grain flow that aligns with the shape of the part, effectively enhancing its strength, toughness, and fatigue resistance. This optimized microstructure provides exceptional resistance to torsional stress, bending moments, and impact loads, which are inherent in heavy-duty driveline operations. The inherent ductility of forged steel also allows it to absorb energy without catastrophic failure, providing an added layer of safety in demanding applications. The "Plain" finish implies that the forged steel is left in its raw state, without additional surface coatings or treatments, ready for installation or subsequent finishing processes as dictated by the end-user’s specific requirements for corrosion resistance or aesthetics.

Performance specifications for the B1310 Series End Yoke underscore its heavy-duty classification. It is engineered to handle up to 1560 inch-pounds of torque at 1000 RPM under continuous duty cycles, which approximates 25 horsepower. This continuous duty rating signifies the yoke’s ability to sustain these load conditions over extended operational periods without premature wear or failure, making it suitable for applications requiring prolonged power transmission. To provide a broader perspective, 1560 inch-pounds is equivalent to approximately 176.2 Newton-meters (Nm), and 25 horsepower translates to roughly 18.6 kilowatts (kW). These metrics highlight the yoke's capability to transmit significant rotational power, crucial for driving hydraulic pumps, compressors, agricultural implements, and other power-intensive auxiliary equipment. Understanding the distinction between continuous and intermittent duty ratings is vital; while this yoke excels in continuous operation, it also possesses a substantial reserve capacity for peak loads encountered during intermittent, high-stress phases of operation.

The compatibility with Buyers Products 5153XBA U-joints is a key design consideration. The U-joint is the crucial flexible link that accommodates angular changes between shafts. The precise machining of the yoke’s ears ensures a proper fit for the U-joint cross and bearing caps, minimizing play and maximizing the transfer of torque. The specified "Joint Angle" of 15 degrees typically refers to the maximum recommended operating angle for optimal performance and longevity of the universal joint assembly. Operating a U-joint within or below its recommended maximum angle is critical for minimizing wear, reducing vibrations, and preserving the kinematic integrity of the driveline. Exceeding this angle can lead to increased friction, accelerated wear of bearing components, generation of parasitic heat, and significant dynamic imbalances that can propagate throughout the entire driveline, potentially causing damage to connected machinery. Therefore, proper driveline design and alignment, respecting the 15-degree joint angle specification, are essential for reliable operation.

Delving deeper into the physical dimensions provided in the specifications table offers further insight into the yoke's engineering. The "Center Line to End of Hub" measurement of 2.56 inches is a critical parameter for driveline designers and installers. This dimension defines the distance from the centerline of the U-joint bearing journals to the axial end of the yoke’s hub. It is essential for determining the overall length of the driveline assembly, ensuring proper shaft engagement, and calculating clearance within the machinery’s housing. The "Hub Diameter" of 2.000 inches indicates the robust outer dimension of the yoke's hub section, providing substantial material thickness around the bore for structural integrity and preventing deformation under high torsional loads. This robust hub design contributes significantly to the yoke’s overall strength and stability, particularly important when considering the absence of a keyway or set screw, placing higher demands on the material surrounding the bore for torque transmission.

The specification "End of Hub to Centerline of Set Screw Hole: 0.625 inches" is an interesting point of discussion for a product explicitly labeled as having "No Keyway" and with both "Set Screw At" and "Set Screw Size" listed as "-". In the context of this specific B1310 Series End Yoke variant, this dimension should be interpreted as a potential design reference from a broader product family specification, rather than indicating the presence of a functional set screw hole on this particular model. For this precise configuration, devoid of both a keyway and a set screw, the primary methods of securing the yoke to the shaft rely on high-precision interference fits or welding, as previously discussed. This ensures that the entire robust design of the hub is dedicated to maintaining the integrity of the shaft connection through material friction or metallurgical bond, maximizing the torsional resistance of the 1.250-inch round bore.

Installation and maintenance considerations for the B1310 Series End Yoke are crucial for achieving its designed operational lifespan and performance. When employing an interference fit, proper shaft preparation, including precise diameter machining and surface finish, is non-negotiable. Techniques such as thermal shrinking or hydraulic mounting may be utilized to achieve the required fit, ensuring that the yoke is seated firmly and concentrically on the shaft. For welded connections, adherence to industry-standard welding procedures and material compatibility is vital to prevent metallurgical defects and ensure structural integrity. Regardless of the attachment method, correct alignment of the driveline is paramount. Misalignment can introduce excessive dynamic loads, vibrations, and premature wear on the U-joints and connected components. Regular inspection of the driveline for signs of wear, corrosion, or damage, along with timely lubrication of the U-joints (if applicable to the specific U-joint model), will significantly contribute to the overall reliability and longevity of the power transmission system.

The B1310 Series End Yoke exemplifies Buyers Products' commitment to engineering excellence and manufacturing quality. Every aspect, from the selection of forged steel to the precise dimensional control, is geared towards delivering a component that can withstand the harshest operating conditions. Its integration into heavy-duty PTO driveline systems in diverse sectors such as agriculture (tractors, harvesters), construction (excavators, loaders), vocational trucks (dump trucks, utility vehicles), and various industrial machinery underscores its versatility and robust performance. By choosing this end yoke, operators and engineers are investing in a reliable link that ensures efficient power transfer, minimizes downtime, and contributes to the overall operational efficiency and safety of their equipment.

In summary, the Buyers Products B1310 Series End Yoke with its 1-1/4 inch round bore and no keyway or set screw is an expertly engineered component tailored for demanding heavy-duty power transmission applications. Its forged steel construction, precise manufacturing tolerances, and high torque capacity make it an ideal choice for connecting shafts where a robust, high-integrity connection method like an interference fit or welding is employed. Its compatibility with standard heavy-duty U-joints, particularly the Buyers Products 5153XBA, ensures seamless integration and reliable performance within a variety of driveline architectures. This end yoke is not merely a component; it is a foundational element for dependable power transfer in machinery where continuous operation and resilience under load are critical.