Couplings

Guardian curved jaw couplings are an all-purpose solution ideal for demanding construction applications. Its compact design delivers high torque capacity thanks to the curved tooth profile, which increases contact area and reduces edge pressure for reliable performance under heavy loads. These couplings can accommodate axial, radial, and angular shaft misalignments, ensuring smooth operation even in rugged construction environments.

Guardian DELTA Series flywheel couplings are engineered for diesel-driven hydrostatic machinery and construction equipment, offering a cost-effective and durable solution. Its single-piece design integrates a hardened steel hub with a reinforced flange, reducing installation time and eliminating extra fasteners. Elastomeric grommets provide steady vibration damping while maintaining stiffness, allowing low-inertia equipment to operate safely below critical speed ranges.

Guardian™ Pump Flanges provide versatile, durable mounting solutions for SAE and metric pumps, with customization available for unique installation needs. Each steel plate includes a rust‑protective coating and comes in multiple thicknesses to support varied applications. Standard options cover SAE sizes 1 through 6, with SAE 0 and 00 available upon request, along with plain or zinc finishes and additional coating choices such as e‑coat, black oxide, and powder coat.

Guardian FBA Series flywheel couplings are built for rugged construction applications, offering a one-piece, all-steel design that ensures strength and durability. They attach directly to the engine flywheel for quick installation, with no hub positioning required, allowing hydraulic pumps to be blind fitted into the coupling hub. Elastomeric grommets provide steady damping of engine vibrations while minimizing side loading on the pump shaft, protecting equipment in demanding environments.

Guardian FLD Series flywheel couplings are engineered for construction applications, enabling hydraulic pumps to be driven directly from the pulley side of the engine. Its retractable sleeve design allows for quick belt replacement, making equipment servicing easier without the need to remove the pump. Each coupling is fully customizable to match specific engine manufacturers and pulley designs, incorporating the Guardian Guardex™ M/I style series for reliable performance.

Guardian FL Series flywheel couplings are a proven, economical solution for off-highway construction equipment such as skid steer loaders, aerial lifts, and excavators. With decades of success in the field, this two-piece design combines a glass-reinforced nylon flywheel flange that fits both SAE and metric flywheels with a sintered steel hub for use on splined or straight shafts. The torsionally stiff construction requires no lubrication and is interchangeable with other popular coupling brands, making it both reliable and versatile.

CENTAMAX Series torsional couplings are built for demanding construction applications, offering a self-ventilating design with high thermal capacity to extend equipment life in modern low-emission diesel engines. Their rubber-in-shear construction provides torsional flexibility that shifts critical resonances below operating speed, reducing vibratory torque and protecting machinery. With multiple rubber element hardness options, including high-temperature CENTALAN-HT and silicone, the couplings can be tailored to specific operating conditions.

CENTAFLEX™-K series is a compact two-piece coupling with high torsional stiffness and resonance-free operation. Ideally suited for hydrostatic driven construction equipment, lower-horsepower applications are easily handled by the CENTAFLEX-K.

CENTAFLEX™-A series couplings are designed for high-performance and high-torsional elasticity. Built to dampen torsional vibrations and shocks, CENTAFLEX-A protects your equipment and outperforms others in its class. The electrically-insulating and thermally-resistant silicone or rubber design is fail-safe and offers backlash-free torque transmission, even under high-torque applications.

CENTAFLEX-R Series torsional couplings are ideal for heavy-duty construction equipment, delivering progressive torsional performance with low stiffness at low torque and increased stiffness at higher torque. Their patented roller design shifts torsional resonance to reduce gear chatter and vibration, ensuring smoother operation in demanding environments. Built with compressed rubber rollers made from temperature-resistant elastomeric materials, they withstand high ambient temperatures and are available in oil-resistant options for added durability.

CENTAFLEX-TIR Series torsional couplings are engineered for modern construction equipment, delivering soft progressive characteristics and high allowable power loss to meet the demands of next-generation Stage V engines. Their design enables reduced idling speeds and higher thermal load capacity under alternating loads, resulting in lower fuel consumption, reduced CO2 emissions, and less gear chatter. By allowing system downsizing, such as smaller splitter gearboxes, the CENTAFLEX-TIR improves efficiency while maintaining robust performance.