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Gurley Precision Instruments
514 Fulton Street
Troy, New York 12180

(800) 759-1844
(518) 272-6300
Fax  274-0336
 

 

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A Quick Encoder Selection Guide

Note: For all incremental encoders, max. resolution 
is after 4x quadrature decode in the user's electronics

.


Note! If you experience "Error reading linearized hint data" from Adobe when trying to open our datasheets, please follow these directions:
For Adobe 5: Open Adobe Acrobat Reader, click Edit, click Preferences, click General (if required), click Options, uncheck "Allow Fast Web View", and click OK to save the changes.
For Adobe 6: Open Adobe Acrobat Reader, click Edit, click Preferences, select "Internet" in the left hand column, uncheck "Allow Fast Web View", and click OK to save the changes.

 

  Rotary Incremental Encoders

Series Dia. Max. Disc Linecount Max. Resolution
(Counts/Rev.)
Notes
R112 12 mm 500 32,000 Smallest High Resolution Encoder, Solid or Blind Hollow Shaft
M122 22 mm 128 512 Compact Magnetic Encoder
R119 & R120 19 mm & 
20 mm
1,024 65,536 Solid or Blind Hollow Shaft
9x11 1.1" 1,800 144,000 Two Accuracy Grades
R135 35 mm 3,600 230,400 Solid or Blind Hollow Shaft
R137 37mm 3,600 230,400 Solid or Blind Hollow Shaft
7700 < 1.7" 5,000 20,000 Modular Kit Encoder
9x20 2.0" 4,500 144,000 Solid or Blind Hollow Shaft
R158 58 mm 5,000 1,000,000 -40 to 100 C option; 60N/40N
9x25 2.5" 9,000 200,000 Three Accuracy Grades
R258 58 mm 5,000 Call Robust, High Accuracy
R260 60 mm 5,000 Call Dual-Shaft Version of R258
8x35 3.5" 11,250 900,000 Two Accuracy Grades
8x35H 3.5" 11,250 900,000 Hollow Shaft, Three Accuracy Grades
8x60 6.0" 18,000 3,600,000 Metrology Grade, Solid or 
Hollow Shaft 
9710 < 23" 36,000 80x linecount Modular Encoder

  Rotary Absolute Encoders.

Series Dia. Max. Resolution (Words/Turn) Notes
M122 22 mm 9 bits Compact Magnetic Encoder
A23S 58mm 25 bits (13 bits/turn) Single and Multi-Turn Option
A25S 2.5" 17 bits Fully Accurate Up to 600 rpm
A19 19mm 13 bits Miniature, Low-Cost True Absolute
A37 37mm 12 bits Compact, Low-Cost True Absolute
A58 58mm up to 16 bits High Resolution, Low-cost True Absolute

  Rotary Virtual Absolute Encoders.

Series Dia. Max. Resolution (Words/Turn) Notes
7700 < 1.7" 14 bits Modular Kit Encoder
Vx20 2.0" 19 bits Solid or Blind Hollow Shaft
Vx35H 3.5" 20 bits  Hollow Shaft
V860H 6" 20 bit Hollow Shaft 1 MHz Max. Data Update Rate
9710VA up to 23" 22 bits Modular Encoder

  Linear Incremental Encoders.

Series Max. Length Max. Resolution  Notes
LE18 1.2 m 0.1 mm Internal ASIC
LE20 1.5 m 0.1 mm Internal ASIC
LE25 3.2 m 0.1 mm Internal ASIC
LE35 3.2 m 0.1 mm Internal ASIC
LE50 30m 10 mm Industrial Grade
P20 20 mm 0.1 mm Plunger-Type Encoder
P40 40 mm 0.5 mm Plunger-Type Encoder
R&P Unlimited 0.25 mm Rack & Pinion Style
9717 3.2 m (125") 0.5 mm Modular Encoder

  Linear Virtual Absolute Encoders.

Series Max Length Max. Resolution  Notes
VL18 1 m 1.0 mm Three Accuracy Grades
9710VA 10" 0.25 mm Modular Encoder

ã 03/24/2006 Gurley Precision Instruments                                                                                                           Terms of Use / Privacy Policy