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RBX Square Face Mount Rotary Encoder

Not recommended for new applications.


Features and Options:

  • Thin profile for space constrained applications
  • Rugged 1/4“ thick anodized aluminum housing
  • 3/8" stainless steel shaft and precision ball bearings
  • 1 to 600 counts per revolution
  • Single output, quadrature, and index outputs
  • USAMade in the USA



Product Description

The Photocraft model RBX is a non-contact optical shaft encoder in a rugged, thin profile, face mount configuration designed to provide years of trouble-free operation in industrial environments.

The model RBX converts shaft rotation into square wave outputs having the specified number of counts per revolution to provide an accurate means of digitizing position, rate, or direction of rotation.

Output pulses are generated when a shatter-proof optical disk internally mounted on the encoder shaft and having the specified output pattern is read by 1, 2, or 3 opto-sensors depending on the number of outputs required. The temperature compensated sensors and rugged aluminum housing assure continuous, reliable operation in industrial environments over a 0° to 70° C temperature range.

UNIDIRECTIONAL - RBX Provides a single output (A) with the specified counts per revolution regardless of which direction the shaft is rotating.

UNIDIRECTIONAL WITH INDEX - RBXZ Second output (output Z) provides a zero reference or index pulse occurring once per revolution, having a pulse width approximately equal to a single pulse on output A

QUADRATURE - RBXQ Bidirectional encoder provides outputs A and B having the same number of counts per revolution in quadrature relation to each other. Indicates shaft rotation and direction of rotation to any control device that accepts quadrature inputs

QUADRATURE WITH INDEX - RBXQZ Quadrature encoder with zero reference or index pulse.

DUAL OR TRIPLE OUTPUT - RBX-a/b/c Provides two or three independent outputs with up to 360 counts per revolution in place of the quadrature and index outputs.

Industry Use

Conveyor Manufacturers Custom Machine Builders Packaging Material Handling

Product Documentation

Additional Information

View FileDatasheet
View FileDrawings

Shaft Options
Output Types
Counts per Revolution Options
Anti-Jitter Option
Supply Voltage Options
Output Circuits

Modified Versions

Modification Description  
M101 Encoder with DIN connector (not recommended for new designs) View FileDatasheet
M151 RBX encoder with 1/4" diameter x 1-3/4" length shaft View FileDatasheet

Not Recommended for New Applications.