Flexible Pin and Bush Couplings for General Industrial Use
Product Description
The Pin and Bush Coupling is one of the most widely used types of flexible shaft couplings due to its simple design, reliability, and maintenance-free operation. It provides a cost-effective solution for transmitting torque between shafts while accommodating minor misalignment and damping torsional vibrations.
Yile Machinery manufactures robust pin and bush couplings from high-grade ductile cast iron, ensuring excellent durability for a wide range of industrial applications.
Principle of Operation: Simple and Effective
The design consists of two cast iron flanges (hubs). One flange has pins bolted to it, and the other has corresponding holes. Flexible rubber or polyurethane bushes are fitted over the pins. The drive is transmitted through the pins and bushes.
This simple mechanism provides several key benefits:
Vibration & Shock Damping: The elastic properties of the rubber bushes absorb shock loads and dampen torsional vibrations, protecting both the driving (e.g., motor) and driven (e.g., pump) equipment.
Misalignment Compensation: The flexibility of the bushes allows the coupling to accommodate small amounts of parallel, angular, and axial shaft misalignment.
Manufacturing and High-Quality Materials
Our pin and bush couplings are built for longevity and reliable performance.
High-Grade Ductile Cast Iron (FCD40 / GGG40): The flanges are manufactured from high-strength ductile cast iron, which offers superior toughness and fatigue resistance compared to standard grey cast iron.
Durable Elastomeric Bushes: We use high-quality rubber or polyurethane bushes that are resistant to wear, oil, and environmental factors, ensuring a long service life.
Precision Machining: All flanges are precision machined to ensure a balanced assembly and accurate bore sizes for a secure fit on the shaft.
Key Features & Advantages
Excellent Vibration Damping: Protects connected machinery from harmful vibrations.
Shock Load Absorption: The rubber bushes cushion shock loads during start-up and operation.
Simple & Economical: A cost-effective solution for reliable power transmission.
Easy Maintenance: Maintenance is as simple as replacing the worn bushes, which can be done quickly and without moving the machines.
No Lubrication Required: A clean, maintenance-free "fit and forget" solution.
Fail-Safe Design: In the unlikely event of bush failure, the metal pins still provide a positive, albeit noisy, drive.
Common Applications
Due to their versatility and reliability, pin and bush couplings are ideal for connecting a wide range of machinery, including:
Centrifugal Pumps
Fans and Blowers
Small Compressors
Conveyor Drives
General Motor-to-Gearbox or Motor-to-Pump connections
Request a Quote for Pin & Bush Couplings
Connect your machinery with confidence. Contact us today with your required bore size, power/torque requirements, and application details for a competitive quote.