PH vs ROLL

Parker-Hannifin Corporation

Parker-Hannifin Corporation manufactures and sells motion and control technologies and systems for various mobile, industrial, and aerospace markets worldwide. The company operates through two segments, Diversified Industrial and Aerospace Systems. The Company's Diversified Industrial segment offers sealing, shielding, thermal products and systems, adhesives, coatings, and noise vibration and harshness solutions; filters, systems, and diagnostics solutions to monitor and remove contaminants from fuel, air, oil, water, and other liquids and gases; connectors, which control, transmit, and contain fluid; control solutions for extreme corrosion resistance, temperatures, pressures, and precise flow; and hydraulic, pneumatic, and electromechanical components and systems for builders and users of mobile and industrial machinery and equipment. This segment sells its products to original equipment manufacturers (OEMs) and distributors who serve the replacement markets in manufacturing, packaging, processing, transportation, construction, refrigeration and air conditioning, agricultural, and military machinery and equipment industries. Its Aerospace Systems segment offers products for use in commercial and military airframe and engine programs, such as control actuation systems and components, engine build-up ducting, engine exhaust nozzles and assemblies, engine systems and components, fluid conveyance systems and components, fuel systems and components, fuel tank inerting systems, hydraulic systems and components, lubrication components, pilot controls, pneumatic control components, thermal management products, and wheels and brakes, as well as fluid metering, delivery, and atomization devices. This segment markets its products directly to OEMs and end users. It markets its products through direct-sales employees, independent distributors, and sales representatives. The company was founded in 1917 and is headquartered in Cleveland, Ohio.

RBC Bearings Incorporated

RBC Bearings Incorporated manufactures and markets engineered precision bearings and components in North America, Europe, Asia, and Latin America. It operates through four segments: Plain Bearings, Roller Bearings, Ball Bearings, and Engineered Products. The Plain Bearings segment produces plain bearings with self-lubricating or metal-to-metal designs, including rod end bearings, spherical plain bearings, and journal bearings that are primarily used to rectify inevitable misalignments in various mechanical components, such as aircraft controls, helicopter rotors, or in heavy mining and construction equipment. The Roller Bearings segment offers heavy duty needle roller bearings, tapered roller bearings, track rollers, and aircraft roller bearings, which are anti-friction bearings that use rollers instead of balls. The Ball Bearings segment manufactures high precision aerospace, airframe control, thin section, and commercial ball bearings that utilize high precision ball elements to reduce friction in high speed applications. The Engineered Products segment offers engineered hydraulics and valves for aircraft and submarine applications, and aerospace and defense aftermarket services; fasteners; precision mechanical components, which are used in various general industrial applications; and machine tool collets that are used for holding circulars or rod-like pieces. The company serves the construction and mining, oil and natural resource extraction, heavy truck, marine, rail and train, packaging, semiconductor machinery, wind, canning, and general industrial markets through its direct sales force, as well as a network of industrial and aerospace distributors. RBC Bearings Incorporated was founded in 1919 and is headquartered in Oxford, Connecticut.