Ogura Industrial has created a new brochure to highlight the wide variety of solutions provided in the turf care market, for both gas and battery powered equipment. As a dominant player in the industry, Ogura strives to offer solutions for equipment used today as well as designs anticipated for the future. On gas- and diesel-powered […]
Brakes + Clutches
Nexen Group debuts new line of electric servomotor brakes
The new Evolve Electric Servomotor Brake from Nexen Group, Inc., offers zero backlash up to the full holding torque in a rigid, easy to install product. The Evolve Electric Servomotor Brake line is spring engaged and electrically released, engineered with a double-sided friction interface for increased torque capacity. The double row angular contact bearing delivers […]
Oil-shear load brakes absorb extreme torque to zero rpm
Force Control load brakes feature oil shear technology that allows them to absorb extreme torque at speeds as low as 0 rpm, so that the dynamometer can accurately capture data at these very low speeds. Oil-shear technology can provide instant load spikes and static lock-up of up to three times the continuous load rating, making […]
Sizing a dynamic brake resistor
Dynamic brakes in electric motor drives divert rising DC bus voltage seen during load deceleration. Here we explain how to size the resistors that process that voltage. By Lawrence Kren | Contributing writer Dynamic brakes divert rising DC bus voltage to an appropriately sized resistor where that voltage is then dissipated as heat. This process […]
Railway relies on advanced backstopping clutch technology
The famous Mount Washington Cog Railway in New Hampshire has been transporting visitors to the highest peak in the Northeastern US since 1869. At the summit, 6,288 ft above sea level, the mountain experiences some of the most extreme weather conditions in the world with wind chill temperatures down to -102°F. A directly measured surface […]
Top 12 design considerations for power-off brakes
The proliferation of new applications for power-off brakes demands fresh design approaches leveraging leading brake manufacturers’ accumulated design experience. Key to optimizing designs for life, cost, and performance is early collaboration with the brake manufacturer. By Brian Mather • Ogura Industrial Corp. Machine designers in the motion-control industry recognize power-off brakes by the following terms: […]
Three torque-limiter options compared (and trip torque explained)
Industrial robots, conveyors, wind turbines, machine tools, packaging machines and pumps are just some of the places you’ll find torque limiters. By Lawrence Kren • Contributing writer Torque limiters actuate on the order of milliseconds to prevent overload, shock, and torque spikes that could otherwise damage components or shorten operating life. They also serve in […]
Electromagnetic-actuated clutches engage polyethelene sheet rolls quickly and accurately
Engaging individual polyethylene sheet rolls with no system downtime is accomplished with speed and accuracy using Miki Pulley CSZ Clutches. Continuously operating via servo motor power by way of a V-belt, individual roll spools automatically switch on/off as programmed when engaged by the CSZ clutches. These high-performance clutches function using electro-magnetic force generated by an […]
New micro brakes for small, precise equipment applications
Fast braking response in small, precision torque applications are the primary benefit of Miki Pulley Micro Brakes. Where high performance braking for small motion control applications are required, these Micro Brakes provide the solution. Miki Pulley’s ultra-compact brake design features a stator with integrated mounting flange, proprietary composite friction liner and armature complete with ring […]
What are electromagnetic power-off brakes and where are they used?
Power-off brakes are commonly used in motion control applications for stopping or holding a load (or both), especially on vertical axes or for emergency stop functionality in servo applications. Power-off brakes are so named because the brake is engaged when power is removed from the system — either intentionally or accidentally. (Power-off brakes are also […]
