NGCLZ Type Crowned-Gear Coupling with Brake Wheel (Extended)

The NGCLZ Type Crowned Gear Coupling with Brake Drum is a torsionally rigid yet flexible shaft coupling that integrates power transmission and braking control into a single unit. It is specifically engineered for industrial equipment requiring smooth braking performance and compact structural design. Based on the conventional crowned gear coupling, this model features an optimized configuration with a half-sleeve coupling structure and an integrated brake drum. This integrated design enables seamless coordination between the transmission and braking systems, reduces the need for additional external braking components, simplifies overall machinery layout, and improves space utilization. It is particularly suitable for applications with limited installation space or low-speed, heavy-duty operating conditions.
Structurally, the NGCLZ coupling consists of an internal gear ring, a flanged half coupling with crowned external teeth, and an integrally designed brake drum. The external teeth are manufactured with a spherical crowned profile, with the sphere center precisely aligned with the shaft axis. Increased tooth side clearance improves load distribution during meshing, ensuring more uniform tooth contact and effectively mitigating localized stress concentration caused by shaft misalignment. Compared with straight-tooth couplings, its overall load-carrying capacity is improved by approximately 15%–20%, with a permissible angular misalignment of up to 1°30′. Although the half-sleeve structure slightly reduces the angular compensation range, it significantly enhances braking smoothness, making deceleration and stopping processes more stable, controllable, and safe.
In terms of performance, the NGCLZ coupling achieves a transmission efficiency of up to 99.7%. The crowned tooth design helps reduce impact loads, vibration, and operational noise, thereby improving overall system stability. During braking, the external braking mechanism acts directly on the integrated brake drum, generating frictional torque to quickly counteract shaft inertia. This ensures rapid yet smooth braking response and minimizes mechanical damage caused by abrupt stopping.