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Apex Industrial Automation is a proud distributor for Dynapar. The Dynapar brand is the name to remember for light duty, industrial duty and high performance absolute rotary encoders and incremental encoders. For half a century, Dynapar has been supplying these high-quality products for commercial and industrial applications. With an unmatched reliability, these optical absolute encoders, optical incremental encoders, motor mount encoders and explosion proof encoders are used in everything from vector motors to office equipment.

Rotary Encoders

Dynapar offers a wide variety of rotary encoders for every feedback application including incremental, absolute, miniature and heavy duty rotary encoders. Rotary encoders come in 3 major mounting styles: hollow-shaft (hollow-bore or through shaft), hub-shaft (hub-bore) or shafted. Hollow-shaft and hub-shaft rotary encoders mount directly to a motor shaft typically using a tether. Shafted rotary encoders mount using a flexible coupling.

There are four major categories of encoder which are differentiated by the demands of the operating environment. These run from heavy duty (the most demanding environment) to light duty (the most controlled environment).

Dynapar Product Family

Heavy, Servo, and Industrial Encoder Grades

Heavy industrial applications have three classes of encoder:
  • Heavy Duty Encoders
  • Industrial Duty Encoders
  • Servo Motor Encoders
  • Light or Commercial Grade Encoders

As the name implies, heavy duty encoders can take the most abuse. They have excellent durability in high temperatures; with particulates, moisture, and contaminants; and under shock or vibration. They have superior speed performance, as well. Heavy duty encoders are the best choice for the most demanding environments – paper, steel, and ore mills where contamination is constant and both shock and heat affect the motor, the stress of aerospace, and the fast factory environments of food and beverage processing. However, heavy duty encoders come at a cost of both size and expense. Unless the environment is truly brutal, a heavy duty encoder may be overkill.

The most common class of encoders is the industrial encoder. An industrial encoder can take punishing operating environments almost as well as heavy duty encoders – rough factories with contamination from dust, particulates, and moisture, in addition to moderate shock and temperature. An industrial encoder offers excellent speed and positioning performance. The class of industrial encoders is versatile.

Hollow Shaft Encoder   Dynapar Encoder

Servo motor encoders, unlike both heavy duty and industrial encoders, actually reside inside a motor housing. Because it is in a contained environment, it doesn’t have strong sealing, but it has excellent temperature resistance and reliable shock/vibration resistance (which fits its operating environment). Because of its location, servo encoders are smaller and are made for small to mid-sized motors, especially servo and stepper motors. 

Light (or Commercial) Encoder Grade

Light duty encoders are used in more consumer-facing applications like office electronics (copiers, faxes, and computer accessories) and laboratory and medical equipment. These have “people-friendly” environments, meaning conditions are very controlled. Likewise, light duty encoders have good (but not demanding) performance for temperature, shock/vibration, and sealing, with better speed performance and high precision.