Rotary Encoders fit large hollow shafts.

Press Release Summary:



Series ERM 2x0 magnetic, modular rotary encoders feature compact 20 mm scanning head and maximum permissible speed of 40,000 rpm. Largest scale drum in series has ID of 410 mm and OD of 452.64 mm with 3,600 poles. IP67-rated encoders are suited for large shafts such as C-axis of lathes, spindle drives, and electric motors.



Original Press Release:


Heidenhain's Improved Rotary Encoder for Large Hollow Shafts


SCHAUMBURG, IL - (December 2003) - HEIDENHAIN Coporation's successful ERM 2x0 series of magnetic, modular rotary encoders for use on large shafts such as the C-axis of lathes, spindle drives and electric motors is now better than ever. Recently redesigned to benefit even more applications, this product enhancement includes a reduced scanning head size and improvements to the measuring standard.

The new ERM 2x0 scanning head features compact design and has been reduced from 40 mm to 20 mm. Also, the maximum permissable speed of the encoder could now be considerably increased with the new design, for example to 40,000 rpm from the past maximum speed of 24,000 rpm.

This ERM 2x0 series also offers a larger scale drum since a lot of applications require larger hollow shafts. The largest scale drum in the series now has an inside diameter of 410 mm and an outside diameter of 452.64 mm with 3600 poles.

It is also important to note that with this new scale, there is a greater scanning gap with the variations now having less influence on the signal amplitude. This increased insensitivity to gap variations increases the overall functionality allowing
greater run out tolerances and easier mounting. The ERM 2x0 scanning head and scale drum provides a degree of protection of IP 67.

For more information, contact HEIDENHAIN at (847) 490-1191, or write to us at HEIDENHAIN CORPORATION, 333 E. State Parkway, Schaumburg, IL 60173. HEIDENHAIN can also be accessed directly via our web site at www.heidenhain.com or e-mail at info@heidenhain.com.

HEIDENHAIN CORPORATION is the North American subsidiary of DR. JOHANNES HEIDENHAIN GmbH, a leading international manufacturer of precision measurement and control equipment. The product line includes linear scales, rotary and angular encoders, digital readouts, digital length gages, CNC controls and machine inspection equipment.

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