An Introduction to Feedback Devices for VFD and Servo Applications
This article will be expanding on the different types of feedback devices in VFD (Variable Frequency Drives) and Servo applications, as well as some of the typical applications in which they are utilized.
Slotless Brushless Servo Motors Improve Machine Performance.
From the outside it looks just like any other industrial brushless servo motor but inside it utilized advanced manufacturing techniques to provide higher torque, higher speed, smoother operation, higher efficiency, and better inertial matching in a smaller package.
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Featured Product
T.J. Davies' Retention Knobs
Our retention knobs are manufactured above international standards or to machine builder specifications. Retention knobs are manufactured utilizing AMS-6274/AISI-8620 alloy steel drawn in the United States. Threads are single-pointed on our lathes while manufacturing all other retention knob features to ensure high concentricity. Our process ensures that our threads are balanced (lead in/lead out at 180 degrees.) Each retention knob is carburized (hardened) to 58-62HRC, and case depth is .020-.030. Core hardness 40HRC. Each retention knob is coated utilizing a hot black oxide coating to military specifications. Our retention knobs are 100% covered in black oxide to prevent rust. All retention knob surfaces (not just mating surfaces) have a precision finish of 32 RMA micro or better: ISO grade 6N. Each retention knob is magnetic particle tested and tested at 2.5 times the pulling force of the drawbar. Certifications are maintained for each step in the manufacturing process for traceability.
