Bourns EM14A1D-C24-L008S Incremental Quadrature Rotary Encoder

The Bourns EM14A1D-C24-L008S is the go-to optical encoder for engineers and designers seeking reliability, precision, and durability. Whether in industrial automation, medical devices, or consumer electronics, this 14mm rotary encoder delivers unmatched performance in a compact, rugged package.

Bourns EM14A1D-C24-L008S Incremental Quadrature Rotary Encoder Overview

The Bourns EM14A1D-C24-L008S is a high-performance 14mm rotary optical incremental encoder from Bourns' renowned EM14 Series, designed for precise position and speed feedback in industrial automation, robotics, and human-machine interfaces (HMI). This 8 PPR (Pulses Per Revolution) encoder features a quadrature output (A/B signals with index), ensuring accurate motion detection in both clockwise and counterclockwise directions. With HCMOS, CMOS, and TTL compatibility, it seamlessly integrates with a wide range of digital control systems. Featuring a compact chassis-mount design, splashproof shaft seal, and high rotational cycle life, the EM14A1D-C24-L008S is engineered for durability, reliability, and long-term operation in demanding environments.

Key Features & Benefits of Bourns EM14A1D-C24-L008S Sensor

• Compact, Robust Construction (14 mm Housing) – Space-saving design for embedded applications
• Quadrature Output (A/B + Index Signal) – Enables precise rotational sensing (±90° phase-shifted signals for direction detection)
• High Resolution (8 PPR / 32 CPR with 4X Interpolation) – Ideal for speed control, positioning, and feedback loops
• Optical Sensing Technology – No contact wear, stable performance, and immunity to electromagnetic interference (EMI)
• TTL/CMOS/HCMOS Compatible (5V DC Operation) – Broad compatibility with PLCs, microcontrollers, and motor drivers
• Splashproof Shaft Seal – Resists dust and light moisture for industrial and HMI durability
• Long Rotational Lifespan – High cycle reliability for continuous industrial use
• 1/4" Solid Shaft (6.35 mm) – Secure coupling for minimal backlash & mechanical wear
• Chassis-Mount Design – Vibration-resistant aluminum housing for stable mounting
• Push Switch Option Available – Additional tactile feedback control in select models

Bourns EM14A1D-C24-L008S Incremental Quadrature Rotary Encoder Applications

The EM14A1D-C24-L008S sensor is widely used in:

• Industrial Automation & Robotics – Motor encoders, servo control, CNC machines, and linear actuator positioning
• Human-Machine Interfaces (HMI) – Control knobs, rotary selectors, and panel encoders for machinery, medical devices, and instrumentation
• Automotive & Aerospace – Throttle position sensing, flight control systems, and actuator feedback
• Medical & Laboratory Equipment – Precision dosing pumps, microscope stages, and robotic surgical tools
• Consumer & DIY Electronics – 3D printer extruder controls, drone gimbals, and RC vehicle steering feedback
• Test & Measurement Instruments – Turntables, rotational speed monitoring, and displacement sensors

Technical Specification of Bourns EM14A1D-C24-L008S Optical Sensor

Parameter	Specifications
Manufacturer Part Number	EM14A1D-C24-L008S
Brand	Bourns
Type	Optical Incremental Rotary Encoder
Series	EM14 Series
Mounting Type	Chassis Mount
Output Type	Quadrature (A/B + Index)
Technology	Infrared LED & Photodetector (Optical)
Pulses Per Revolution (PPR)	8 PPR (32 CPR with 4X decoding)
Supply Voltage	5V DC (±10%) (TTL/CMOS/HCMOS Compatible)
Output Signal	Two-channel square wave (90° phase shift)
Shaft Type	1/4" (6.35 mm) Solid Shaft
Rotational Life	> 1 million cycles (Typical)
Environmental Protection	Splashproof Shaft Seal
Operating Temperature	-10°C to +70°C (14°F to 158°F)
Packaging	Bulk, Tape & Reel (OEM Options Available)