GIICL cylindrical gear coupling

The GIICL cylindrical gear coupling is a compact and highly efficient industrial power transmission component, specifically designed for heavy-duty applications and installation spaces with limited room. This coupling consists of an internal gear ring combined with a flanged half-coupling featuring external gears, where the external teeth are machined into a spherical profile with the center of the sphere aligned with the gear shaft axis. This design allows simultaneous compensation for radial, axial, and angular misalignments while transmitting torque. Compared with conventional straight-tooth couplings, the crowned gear design of the GIICL coupling increases the tooth flank clearance, enhances angular adaptability, prevents edge stress concentration at the tooth ends, and ensures uniform tooth contact, thereby extending service life.
Depending on the sealing structure, the GIICL series is divided into two types: Type I features a split sealing end with larger tooth spacing, allowing greater radial displacement, while Type II has an integral sealing end with smaller tooth spacing, a more compact structure, and lower rotational inertia, suitable for different installation spaces and operating conditions. The flared design at the end of the external gear hub facilitates the assembly and disassembly of the internal and external gears, reducing installation and maintenance difficulty.
The GIICL coupling offers high load capacity; under the same internal and external diameter conditions, its average load-bearing capability is 15%–20% higher than that of straight-tooth couplings. Its nominal torque range spans from several thousand to several million N·m, meeting the transmission requirements of various heavy-duty equipment. Its misalignment compensation performance is exceptional, allowing an angular displacement of up to 1°30′ when radial displacement is zero—approximately a 50% improvement over straight-tooth couplings—effectively accommodating shaft deviations caused by vibration, thermal expansion, or operational factors. With a transmission efficiency of up to 99.7%, low operating noise, and uniform tooth wear, the GIICL coupling reduces maintenance frequency and operational costs, providing stable and reliable power transmission solutions for long-distance, high-torque industrial applications.