German Thomson Neff couplings, Thomson Neff models, Thomson Neff prices

Thomson Neff couplings consist of components such as an internal gear ring and a flanged half-coupling with external teeth, both having the same number of teeth. External teeth are available in two profiles: straight teeth and crowned teeth. Crowned teeth refer to external teeth machined into a spherical surface, with the center of the sphere on the gear axis. The backlash is larger than that of standard gears. Crowned tooth couplings allow greater angular misalignment (compared to straight-tooth couplings), improve tooth contact conditions, increase torque transmission capacity, and extend service life. During operation of gear couplings, relative displacement occurs between the two shafts, and the tooth surfaces of the internal and external gears periodically undergo axial relative sliding, inevitably causing tooth surface wear and power loss. Therefore, gear couplings must operate under good lubrication and sealing conditions.

Thomson Neff coupling introduction

Using just one mechanical torque limiter can quickly disconnect the motor from the main spindle, thereby eliminating the destructive effects of inertial forces. For ordinary machinery, including conveyor drives, office equipment, and various instruments, mechanical torque limiters such as shear-pin safety couplings and friction clutches provide good safety protection. However, they still cannot meet the requirements of high-performance equipment such as machine tools. One problem faced is that ordinary clutches and couplings transmit both torque and misalignment to the protected shaft. In special applications, there are other issues. However, safety couplings are a new type of mechanical torque limiter that overcome these traditional problems. Safety couplings are best suited for protecting high-speed, high-precision drive systems from overload damage. This type of coupling is not merely a refined version of standard torque limiters, but a product specifically designed in collaboration with machine tool manufacturers to meet specific requirements. Protection devices equipped with safety couplings are also lower in cost. When equipping machining centers with such protection devices, each axis typically costs 750 USD.

Thomson Neff coupling features

All safety couplings have the following characteristics: 1) No backlash in keyless shaft-hub connections; 2) High torsional stiffness, very low moment of inertia, compact size, and adjustable disengagement torque; 3) Maintains original position after re-engagement; 4) Provides alarm during overload; 5) Available in automatic and non-automatic re-engagement versions, with heat resistance (above 260°C). In addition, certain types of safety couplings can compensate for axial, radial, and angular shaft misalignments. Some models feature integrated ball bearings for pulleys and sprockets. These characteristics make safety couplings suitable not only for machine tool drives but also for high-performance assembly lines, printing machinery, packaging machinery, etc. The internally expanding friction safety coupling is a structural variant of friction safety couplings. It uses two cylindrical helical springs to press arc-shaped friction plates against an intermediate ring, generating friction between the plates. The magnitude of this friction determines the coupling's slip torque. The slip torque is adjusted by replacing the springs. When the transmitted torque exceeds the slip torque of the Stieber coupling, slippage occurs between the driving and driven sides; when the transmitted torque falls below the slip torque, there is no relative sliding between the two sides, and normal operation is automatically restored. Under normal operating conditions within the specified range, component replacement is generally not required. With proper use of the AMN type internally expanding friction safety coupling, impact loads during startup of the shaft transmission system can be effectively reduced, allowing uniform acceleration of the machine, while preventing motor burnout due to overload. It is suitable for applications requiring overload safety protection to avoid damage to critical components. The internally expanding friction safety coupling is a type of flexible safety coupling with elastic elements. It connects two halves of a Stieber coupling via a double-row roller chain. Relative sliding can occur between the sprocket and the friction plates, providing safety protection. The torque is determined by the compression of the disc springs. It is suitable for connecting transmission shaft systems with coaxial or parallel axes and has certain capability to compensate for relative misalignment between the two shafts, limiting torque and providing overload protection.

Thomson Neff coupling applications

The features and applications of safety couplings are analyzed as follows: 1) Wide torque control range and high control precision. Torque is proportional to the excitation current over a wide range, enabling complete and simplified control of torque transmission, and it can be used as a linear regulation element. 2) Constant torque characteristic: torque depends solely on the magnitude of the excitation current and is independent of the relative speed between the driving and driven sides. It has a constant torque nature, with static torque equal to dynamic torque. 3) Can transmit a certain torque regardless of slip, without shock, vibration, or noise, ensuring smooth operation, suitable for high-frequency operating conditions. 4) Low power consumption and low control power. The residual torque when excitation current is disconnected is very small, offering good disengagement performance. No heating occurs during idling, and torque stability is good, making it suitable for precise control. 5) Simple structure, small volume, and light weight. The magnetic powder is dry and oil-free, making maintenance easy. The magnetic powder has good oxidation resistance, heat resistance, long service life, and high reliability. By fixing the driven part, the torque becomes a braking torque on the rotating part, forming a magnetic powder coupling, which can also serve as a magnetic powder load brake.

Weidou Intelligent Technology specializes in selling German Thomson Neff rigid couplings, Thomson Neff flexible couplings, Thomson Neff safety couplings, Thomson Neff universal joints, Thomson Neff diaphragm couplings, Thomson Neff jaw couplings, Thomson Neff flange couplings, Thomson Neff cross-slide couplings, Thomson Neff slider couplings, Thomson Neff gear couplings, Thomson Neff tire couplings, Thomson Neff elastic couplings, Thomson Neff bellows couplings, Thomson Neff roller chain couplings, Thomson Neff spring couplings, all original imports from Germany. Customers are welcome to inquire and order.