The Sensata/BEI L25G-F3-2540-ABC-7272-SM16 is an incremental optical encoder delivering precise quadrature feedback for rotary position, speed, and direction in demanding motion control systems. Operating to 10,000 RPM with 2540 cycles per shaft turn, this encoder combines high-resolution optical sensing with multi-voltage line driver electronics to support flexible system integration across industrial automation and control applications.
Technical Specifications
Mechanical
• Shaft: 1/4″ diameter, 416 stainless steel with 0.80″ × 0.03″ flat
• Shaft loading: 5 lbs axial, 8 lbs radial maximum
• Shaft runout: 0.0005″ T.I.R. maximum
• Bearings: ABEC 5 class with 1 × 10⁹ revolution bearing life (6,700 hours at 2500 RPM)
• Starting torque: 0.50 in-oz typical, 1.0 in-oz maximum (sealed bearings)
• Maximum speed: 10,000 RPM
• Moment of inertia: 4.1 × 10⁻⁴ oz-in-sec²
• Housing: Die cast aluminum with iridite finish; drawn aluminum cover (0.060″ wall)
• Weight: 13 oz typical
Electrical
• Resolution: 2540 cycles per shaft turn
• Output: Multi-voltage line driver, 5–28 VDC input, Vout = Vin
• Current: 100 mA source/sink (line driver); 90 mA supply current typical plus load
• Output format: 2 channels in quadrature (27° electrical typical)
• Index channel: Z-axis gated 1/2 cycle wide
• Protection: Reverse polarity, overvoltage (60 V), output short circuit (1 minute)
• Connector: MS3102R16S-1P, side-mounted
Environmental
• Temperature: 0° to 70° C operating; −25° to 90° C storage
• Enclosure: NEMA 2 (IP43)
• Shock: 50 g’s for 11 msec
• Vibration: 5–2000 Hz at 20 G’s
• Humidity: 98% RH without condensation
– Key Features
• Incremental quadrature output with index pulse for absolute position referencing
• Multi-voltage line driver topology accommodates 5–28 VDC supply rails
• Output short circuit protection and overvoltage clamping to 60 V
• ABEC 5 bearings support extended operational life in continuous-duty applications
• Sealed bearing option reduces starting torque variation and extends service intervals
– Typical Applications
• Industrial motion feedback and speed sensing
• Machine tool axis positioning and spindle feedback
• Conveyor and material handling systems
• Robotics and automation equipment
• Process control requiring multi-turn position tracking
– Compatibility & Integration
The L25 series shares optical and electronic architecture with the higher-capacity H25 encoder line. MS3102R16S-1P connector and multi-voltage line driver output integrate directly with industrial controllers and motion amplifiers. Extended resolution (1 to 28,800 CPT) and alternative output formats (TTL, complementary channels) available within L25 product family.
