John Crane
John Crane is a leading provider of engineered technology solutions, specializing in mechanical seals, seal support systems, filtration equipment, and power transmission couplings. With over 100 years of innovation, they serve industries such as chemical, food and beverage, mining, oil and gas, pharmaceutical, polymers, power generation, pulp and paper processing, refrigeration compression, wastewater and clean water management, and new energy. ([johncrane.com](https://www.johncrane.com/en/about?utm_source=openai))
All Products(3)

H-L Coupling Solutions
Factory-assembled Transmission Unit with High-torque Capacity for low speed applications where meeting API-671 (ISO 10441) specifications is required H-L low speed couplings feature a factory assembled transmission unit that is simple to remove for easy equipment maintenance access. Hubs will accept larger shaft sizes commonly found on electric motors, generators and API-671 pump applications. H-L couplings can also be designed to interface with integral shaft flanges.

H-F Coupling Solutions
Factory-assembled Transmission Unit with High-torque Capacity and Low Weight (API 671, ISO 10441) H-F couplings can be readily adapted to match the integral shaft flanges used on many large gas and steam turbines. On some applications, an H-F turbine end drive is combined with a reduced moment arrangement at the compressor end. The transmission unit is simple to install and remove for rapid separation of the two machines, providing easy access for alignment and equipment maintenance.

H-C Coupling Solutions for Turbomachinery
High-performance, Reduced-moment and Low-windage Design (API 671 and ISO 10441) H-C couplings offer the lowest possible overhung moments and additional shrouding of the flexible elements and bolts. This arrangement produces a high-integrity coupling suited for most medium-speed and high-speed compressor drives. The factory assembled H-C hub/flex units are designed to accommodate typical machine shaft sizes for turbo compressor applications. The separate spacer on the H-C can be varied to provide the appropriate distance between shaft ends and the required torsional stiffness to suit individual applications. On some applications, the H-C hub assembly on a compressor or gearbox input shaft is combined with the flanged H-F arrangement for a turbine driver.
