As of March 26, 2010 Joliet Technologies is no longer representing the Avtron line of products.

We do however represent the Dynapar line of Rotary Feedback Products.

Avtron – Tachs, Tachometers, Encoders, Rotary Pulse Generators

Joliet Technologies is the preferred Avtron Integrator for the Chicagoland area.

Tachs, Tachometers, Encoders, Rotary Pulse Generators 

Mill-Duty Encoders

Avtron Mill-Duty Encoders are cost effective, high-performance units produced for a wide range of applications. They have many of the Heavy, Mill-Duty (HMD) features at a mid-range price. The electrical outputs are compatible with the latest digital drives and systems.


The M925 is an economically priced digital rotary pulse generator, specifically designed for use in coordinated drive systems. The M925 generates a specific number of pulses for each shaft rotation. When coupled to a roll or motor, its output is directly proportional with respect to position (pulse count) and speed (pulse rate).

View M925 Instruction Sheet


The M945 is a zero-speed rotary encoder. This unit is face mounted to a 56 C flange or foot mounted using our foot mount adapter. The M945 is a totally enclosed, single output unit for AC and DC drive control, speed feedback, or instrumentation systems.This unit is available with a quadrature output of 240, 360, 500, 600, 1000, 1024, 1200, 1800, 2000, 2048, 2500, 4096, or 8192 pulses per revolution. The M945 is supplied with an MS connector and mating plug. This unit can be wired in either single ended or differential applications without modification.View M945 Instruction Sheet

Call Joliet Technologies TODAY 

If you have any questions concerning Avtron’s Tachs, Encoders, and Pulse Generators, please contact us by:
Phone (815) 725-9696,
Toll Free (866) 492-9888,
Fax (815) 725-9393 or

Joliet Technologies custom packages, integrates and engineers AC Variable Frequency Drives (VFD), DC Variable Speed Drives (VSD) and AC Drive Controllers using top of the line manufacturers, like ABB, Emerson-Control Techniques, Siemens and Saftronics (Fincor). Our custom drive packages are built to your specifications for your application. We specialize in large horsepower drive systems (500Hp and above). Call us at (815) 725-9696 or fax us at (815) 725-9393 or e-mail us or fill out an RFQ with your requirements. Serving the greater Chicagoland area and the World.