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Since 1977!

Highest Precision!

Best Quality

         +
Engineering
Support!

Our engineering expertise is available
to provide
technical support
for the products
we sell; and assist
our customers
in solving
their engineering
problems.


   

 

The Fundamental  Operation of  SEL Series Rack & Pinion Linear Encoder or Resolver Measuring Systems
(navigational structure)

   
Page 1
Rack and Pinion Mesh Geometry

Page 2

Long Life & Trouble-free Operation

Page 3
Precision, Fine Resolution & Unlimited Length of Travel

Page 4
Integral Pinion Transducers

Page 5
Backlash Elimination

Page 6
Angular Measuring Rack Concept

Page 7
Mounting Details for Angular Rack & Pinion

Page 8
Angular Measuring Rack on G. A. Gray (Gidding & Lewis) VTM Machine

 

   



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Page 2

The Fundamental Operation...


blueribbon.gif (909 bytes) Years of Trouble Free Operation 

A rack and pinion style incremental linear encoder or resolver combined with a ruggedly constructed DRO, NC, CNC or PLC provides the user with years of trouble-free operation. 

blueribbon.gif (909 bytes)Tolerates Coolant and Metal Chips 

A rack and pinion style encoder or resolver is the most reliable feedback device for operation in an environment where coolant and metal chips are ever present. One advantage of the SEL Series linear encoder or resolver package is that coolant does not affect either the rack or the pinion. By comparison, a glass scale will either fail or require ongoing cleaning and maintenance after coolant seeps through the encoder seals. 

The SEL Series features a unique dual lip seal to inhibit the flow of metal chips into the rack and pinion area. When a metal chip penetrates the single seal on a glass or magnetic scale, it will often render the feedback device inoperable causing a need for system repair and most likely replacement. If a metal chip does enter the SEL Series enclosure, a flexplate simply flexes and allows the pinion to ride over the metal chip without damage to the encoder or error in the readout at final position. 

blueribbon.gif (909 bytes)Long Life in Hostile Environment 

It is well accepted that the rack and pinion linear systems have a high degree of dependability and life while operating in the rugged environment of the machine tool. We have not had a rack wear out in over 20 years of providing crowned, ground racks for precision position feedback. 

blueribbon.gif (909 bytes)Maintenance Free Operation 

The SEL Series Rack and Pinion Systems are rarely affected by the environment and tolerate metal chips and coolant. Under normal operating conditions, the rack and pinion system will not require maintenance over the life of the unit. 



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5143 Electric Avenue
Hillside, IL 60162
708-449-5700 (Phone)
708-449-5703 (Fax)


E-Mail: schlenkent@aol.com

 

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