Buyers Products R38D Series Control Cable with 5 Inch Travel features a corrosion resistant stainless steel core to ensure long life. The cable has 5 in. of total travel with no neutral detent. The cable is available in lengths ranging from 6 ft to 30 ft to fit a variety of jobs, and can be easily customized by cutting conduit and core wire. It includes a small clamp to secure the output end for added stability, and a 2 in. control knob.
Specifications
| Cable Series | R38D Series |
| Total Travel (in.) | 5.00 " |
| Cable Dia (in.) | 0.088 " |
| End Type | Plain |
| Rod End Thread Size | - " |
| Mount Thread Size (in.) | 1/2-20 " |
| Cable Length (ft.) | 6.00 ' |
| Bulkhead Thread Size | - " |
| Conduit Diameter | 0.375 " |
| Cable Core Material | Stainless Steel |
| Conduit Material | PVC |
| Knob Material | Polymer |
| Knob Thread Size | 3/8-24 " |
Advanced Technical Overview: Buyers Products R38D Series 6 Foot Stainless Steel Core Control Cable
The Buyers Products R38D Series Control Cable, specifically the 6-foot variant, represents a robust and versatile solution for a multitude of mechanical control applications requiring precise linear actuation. Engineered for durability and consistent performance, this control cable system leverages a stainless steel core, encased within a high-quality PVC conduit, to deliver reliable operation even in challenging environmental conditions. This detailed technical description delves into the design principles, material specifications, operational characteristics, and application suitability of the R38D Series cable, emphasizing its value proposition for professional installations.
Design and Construction Principles
The fundamental design of the R38D Series control cable revolves around a push-pull mechanism, optimized for efficient transmission of manual input over a specified distance. At its heart is the "6 Foot Stainless Steel Core Wire," a critical component that defines the cable's strength, corrosion resistance, and operational longevity. The overall architecture comprises three primary elements: the core wire, the conduit, and the terminal components (control knob and output end).
Core Wire: The Foundation of Reliability
The core wire, with a specified diameter of 0.088 inches (approximately 2.235 mm), is manufactured from high-grade stainless steel. The selection of stainless steel for the core material is a deliberate engineering choice, offering several key advantages over alternative materials such as carbon steel or galvanized steel. Foremost among these is its exceptional corrosion resistance. Stainless steel forms a passive chromium-rich oxide layer on its surface, which self-repairs when scratched, thereby preventing rust and degradation even when exposed to moisture, chemicals, road salts, or other corrosive agents common in industrial, marine, and automotive environments. This inherent resistance directly contributes to the "long life" specified in the product description.
Beyond corrosion resistance, stainless steel offers superior tensile strength and fatigue resistance. These mechanical properties are crucial for a control cable that undergoes repetitive push-pull cycles. The core wire must withstand significant axial loads without yielding, stretching, or fracturing. The specific grade of stainless steel (e.g., AISI 302, 304, or 316, although not specified, typical for such applications) ensures a balance of strength, ductility, and formability, allowing for smooth operation within the conduit and enduring the stresses of repeated operation. The plain end type further enhances customization capabilities, allowing integrators to affix application-specific fittings or terminals as required.
Conduit: Protection and Guidance
Encasing the stainless steel core is a robust conduit made from PVC (Polyvinyl Chloride), with an outer diameter of 0.375 inches (approximately 9.525 mm). The conduit serves multiple critical functions:
- Protection: It shields the delicate core wire from external abrasive forces, impacts, and contaminants such as dirt, dust, and moisture, which could impede its smooth movement or accelerate wear.
- Guidance: The conduit provides a stable, low-friction pathway for the core wire, ensuring efficient transmission of force and maintaining the cable's routing integrity. The internal surface of the conduit is designed to minimize frictional losses during the push-pull action, contributing to the cable's overall efficiency and operational feel.
- Environmental Barrier: The PVC material is inherently resistant to many chemicals, oils, and greases, making it suitable for use in environments where such substances are present. Its flexibility allows for routing around bends and obstacles without kinking, while its moderate rigidity helps maintain the cable's structural integrity over its length.
Terminal Components and Actuation Mechanism
The R38D Series cable is designed for a total travel of 5.00 inches (approximately 127 mm), indicating the maximum linear displacement of the core wire relative to the conduit. This travel range is suitable for controlling valves, throttles, chokes, shift linkages, and other mechanisms requiring moderate actuation distances. The absence of a "neutral detent" signifies a smooth, continuous travel across the entire 5-inch range, offering precise, variable positioning rather than fixed, indexed positions. This characteristic is particularly advantageous in applications where fine control over the actuated device is paramount.
At the input end, the cable is equipped with a 2-inch control knob, molded from a durable polymer. The polymer material provides ergonomic comfort, thermal insulation, and resistance to environmental degradation. The knob features a 3/8-24 inch thread size, ensuring a secure and standardized connection to the core wire, facilitating manual manipulation. The mounting thread size for the cable assembly itself is 1/2-20 inches, allowing for secure panel or bulkhead mounting, ensuring stability and preventing unintended movement of the cable assembly.
At the output end, the cable includes a "small clamp to secure the output end for added stability." This clamp is essential for securely attaching the moving end of the core wire to the mechanism it controls. Proper attachment is crucial for efficient force transmission, preventing slippage, and ensuring accurate actuation. The plain end type of the core wire at this output allows for highly versatile integration, where specialized connectors, clevises, or custom linkages can be easily affixed to match specific application requirements.
Technical Specifications and Performance Metrics
The provided specifications offer a precise technical profile of the 6-foot R38D Series control cable:
- Cable Series: R38D Series - Denotes a specific product line known for its design and performance characteristics.
- Total Travel (in.): 5.00" - The maximum linear displacement of the core wire, critical for matching to the stroke requirements of the controlled device.
- Cable Dia (in.): 0.088" - Diameter of the stainless steel core wire, directly impacting tensile strength and flexibility.
- End Type: Plain - Indicates no pre-installed terminal fitting on the core wire, offering maximum customization.
- Mount Thread Size (in.): 1/2-20" - Standard thread for mounting the cable assembly, ensuring secure installation.
- Cable Length (ft.): 6.00' - The overall length of the cable assembly, including both core wire and conduit, important for routing and reach.
- Conduit Diameter: 0.375" - Outer diameter of the PVC conduit, relevant for routing clearances and clamp sizing.
- Cable Core Material: Stainless Steel - Confirms the corrosion-resistant and high-strength material of the core.
- Conduit Material: PVC - Confirms the protective and guiding material of the outer sleeve.
- Knob Material: Polymer - Confirms the durable and ergonomic material of the control knob.
- Knob Thread Size: 3/8-24" - Thread size for securing the control knob to the core wire.
These specifications collectively define the cable's operational envelope. While specific force ratings (e.g., push/pull load capacity) are not explicitly listed, the choice of stainless steel for the core and the overall robust construction imply a capability for moderate to high force transmission, typical for industrial and heavy-duty commercial applications. The 5-inch travel and absence of a detent point to applications requiring proportional control rather than simple on/off or indexed switching.
Customization and Versatility
A significant advantage of the R38D Series cable is its "easily customized by cutting conduit and core wire" feature. This capability is paramount for integrators and technicians who need to precisely tailor the cable length to specific application requirements, especially when dealing with unique or retrofitted installations. The ability to cut both the core wire and the conduit ensures that the cable can be optimally sized, minimizing excess length that could lead to kinking, increased friction, or installation challenges. This flexibility reduces inventory requirements for various pre-cut lengths and allows for on-site adjustments, significantly enhancing installation efficiency.
The plain end type of the core wire further contributes to customization. Unlike cables with pre-swaged fittings, the plain end allows users to attach a wide array of specialized fittings—such as clevises, rod ends, eye terminals, or custom adapters—that are best suited for the specific linkage or lever mechanism being controlled. This adaptability makes the R38D Series a versatile component in a diverse range of mechanical systems.
Application Considerations
The Buyers Products R38D Series 6 Foot Stainless Steel Core Control Cable is ideally suited for applications requiring reliable, smooth, and corrosion-resistant mechanical control. Potential applications include, but are not limited to:
- Heavy-Duty Vehicle Controls: Actuating throttles, chokes, PTO (Power Take-Off) engagements, or various hydraulic valve controls on trucks, construction equipment, agricultural machinery, and municipal vehicles. The stainless steel core and PVC conduit offer resilience against harsh outdoor environments, including exposure to road salt, dust, and varying temperatures.
- Industrial Machinery: Controlling machine functions, safety interlocks, or process valves in manufacturing plants, material handling systems, and processing equipment. The durable construction ensures longevity in demanding industrial settings.
- Marine Applications: Suitable for throttle, choke, or steering auxiliary controls on boats and marine vessels where saltwater corrosion is a primary concern. The stainless steel core is particularly advantageous here.
- Off-Road and Recreational Vehicles: Engaging differentials, controlling auxiliary lights, or operating specialized equipment on ATVs, UTVs, and other recreational vehicles.
- Custom Mechanical Linkages: As a fundamental component in bespoke mechanical systems where linear push-pull action is required over a 5-inch stroke.
When integrating the cable, designers should consider the routing path, ensuring that bend radii are within acceptable limits to prevent kinking or excessive friction. Proper securing of the conduit at multiple points along its length is also crucial to prevent flex or movement that could compromise control precision or accelerate wear. The inclusion of the "small clamp to secure the output end" highlights the importance of anchoring the conduit to provide a stable reference point for the core wire's movement.
Maintenance and Longevity
The design of the R38D Series cable, particularly its stainless steel core and PVC conduit, contributes significantly to its low-maintenance profile and extended operational life. Stainless steel inherently resists corrosion and wear, while PVC provides a durable outer shield. Regular inspection for conduit integrity, proper lubrication of the core wire (if environmental conditions or specific application demands warrant it, though often factory-lubricated for life), and ensuring secure attachments at both ends will maximize the cable's service life. The ability to customize the cable length on-site also implies ease of replacement or repair should the need arise due to unforeseen damage or changes in application requirements.
Conclusion
The Buyers Products R38D Series 6 Foot Stainless Steel Core Control Cable stands as a testament to thoughtful engineering, combining robust materials with functional design to deliver a high-performance linear actuation solution. Its stainless steel core ensures unparalleled corrosion resistance and mechanical strength, while the PVC conduit provides essential protection and guidance. With a 5-inch total travel, no neutral detent for fine control, and comprehensive customization capabilities, this cable is an ideal choice for a broad spectrum of demanding applications, from heavy-duty vehicle controls to intricate industrial machinery. The explicit technical specifications and the inherent durability of its components affirm its value as a reliable, long-lasting investment for professionals seeking precision and resilience in their mechanical control systems.
