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  HOME > MOTOR DRIVEN HOME > UNISLIDE ASSEMBLIES > ENCODERS 1 (800) 642-6446 or 1 (585) 657-6151 (in NYS)
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Encoders-Magnetic DRO selection Rotary encoder

Mounting an magnetic, optical or inductive encoder directly to the slider gives a direct reading of slider movement eliminating lead screw and backlash errors.

Linear encoders - Inductive

amo scale on bislide

AMO LMB-110 Inductive scale encoder   
Resolution: 0.001mm/0.000039"
Accuracy: 0.010 mm/meter
Repeatability: 0.001mm/0.000039"
Output: Differential
Cable Length: 3 m


Linear encoders - Optical

A UniSlide with ACU-RITE digital readout system

Motorized uniSlide and linear encoder

A BiSlide with ACU-RIte encoder and DRO

Motorized BiSlide and linear encoder
The reader head is mounted to the slider, as shown, providing a true measurement of slider position. ACU-Rite data sheet.pdf  
Encoder dimensions

Two resolutions available are

  • 0.0002"/5 µm
  • 0.00005"/1 µm

Scales can be provided from 2" to 90" long.


Linear encoders - Magnetic

Velmex can mount Elgo Electric EMIX 23 Magnetic incremental linear encoders on outside edge of BiSlide Carriages.

Resolution: 0.001mm/0.000039"
Accuracy: 0.025 mm/100mm
0.045 mm/meter
Repeatability: 0.001mm/0.000039"
Output: Differential
Cable Length: 3 m.

More data for Elgo encoder

magnetic encoder



New Velmex Digital Readout with optional base

The Velmex Read Out (VRO) is a compact one or two axes digital readout for linear and rotary incremental encoders. The VRO uses the latest OLED display and DSP microcontroller technology for high performance, ultra-precise, digital position readout. Designed for differential type encoders, the VRO is also fully compatible with single ended encoders.
· Easy front panel or PC configuration
· Inch/Metric selectable units
· Full RS-232/USB communication
· Remote Send, Clear, Unit button Inputs
· User settable scaling, decimal place, axis and unit labels
· Universal input AC Power adapter with UL, CE, TUV ratings
· 3 year Limited Warranty MORE

Three or 3 + theta
Axis QC-100 Series DRO

QC100 brochure.pdf

QC-100 DRO
The USB to Serial Adapter connects the DRO to a computer USB port. This adapter will automatically be configured as a virtual COM serial port on a PC. This virtual COM port works exactly the same as a standard COM port allowing all software to address the DRO directly through a COM port number. Use this adapter with a computer with an available USB port, but no RS-232 (COM) serial port. Catalog number 4-2132.  User Manual  Data sheet USB to Serial Adapter

Rotary encoder

Rotary encoder and DRO

Encoders have quadrature output using 5 V logic and are stocked in the following resolutions: 100, 200, 400, and 500 counts per revolution (CPR). See Encoder selection to view resolution with encoder.

When combined with a DRO readout, the encoder counts are converted to inches for the English thread or centimeters for the metric thread lead screws.

For rotary tables, the encoder can be mounted on a motor shaft extension. It will read degrees on the DRO. Data sheet

Rotary Encoder Encoder mounted on the back side of a double shaft motor