Kollmorgen has announced ATEX certification and IECEx/cETLus listing for the explosion-proof Goldline EBH 480 Vac servomotor. These new explosion-proof approvals for the high-voltage Goldline EBH servomotor exemplify Kollmorgen’s commitment to advancing the state of the art in motion control and meeting the most demanding application requirements.

Nexen Group, Inc., announced a new line of Rotary Indexers. The X-Line delivers up to three times more torque and greater moment load capacity in a compact package.

Regal Rexnord Corporation has launched a redesigned series of its long-serving, industry-leading Autogard F400 Series torque limiter. This next generation Autogard F400 Series offers significant improvements whilst remaining a drop-in replacement for the legacy 400 Series, matching its predecessor in form, fit and function. 

Rotork Controls has established a global reputation for robust and reliable valve actuators, operating in some of the world’s most demanding and critical applications. Thorough testing of the motors used in the actuators is one of the keys to this assured performance, with TorqSense transducers from Sensor Technology playing a vital role in the test process.

Stock Drive Products/Sterling Instrument (SDP/SI) expands their selection of flexible couplings to include the single disk type couplings (short type), series S50XHSM… and the double disk type couplings (standard length type), series S50XHWM…. The disk type flexible couplings are an economical option while providing greater torque capability and improved performance in a reduced size.

Siemens Digital Industries Software and IBM recently announced they are expanding their long-term partnership by collaborating to develop a combined software solution integrating their respective offerings for systems engineering, service lifecycle management and asset management.
  

The earliest example of a gear train dates to at least 2,000 B.C. when Chinese engineers built a chariot that used a complex planetary mechanism made of wooden gears to let a dragon head continuously point south when driven around (Ref. 1). In Greece, a surprisingly advanced Antikythera gearbox mechanism, incorporating at least 37 precisely crafted bronze gears, was built years later, between 205–60 B.C. (Ref. 2).

Unlike HVAC applications, servomotors are not normally operated at the same speed or torque for extended periods, thus the overall efficiency of a servomotor is not easily given a single numeric value. The efficiency varies greatly with the application, and thus different applications favor different types of servomotors.

Precision flexible shaft couplings come in two basic forms, both of which are designed to operate without backlash or excessive inertia while compensating for inevitable misalignment offsets between motor/gearbox and load. Torsionally stiff couplings are made with metallic flexible elements and with the intent to eliminate as much twisting deflection as possible so that the rotation of both shafts is kept as well synchronized as can be. 

The HTB electric brake from Ringfeder features a multiple floating disc design that disengages when power is applied to the brake coil and engages when that power is removed. It is a cost-effective solution when you need extremely high torque in a very compact package.