15BY Gear Stepper electronic starter Compact, precise 2phase geared stepper designed for small mechanisms and electronic starting tasks. Clear wiring, compact dimensions, and a predictable electrical profile make this unit easy to integrate into control systems. Key benefits Compact size fits tight assemblies: 15 mm electronic starter diameter allows use in small housings and compact devices. Precise motion and repeatable positioning for control tasks where accuracy matters. Simple wiring and standard color code reduce installation errors and speed setup. Predictable electrical behavior with 30 ohm phase resistance helps with driver tuning and stable operation. Standard 3 mm output shaft accepts common couplings and fittings for direct mechanical connection. Important attributes Model: 15BY Gear Stepper electronic starter Electronic starter diameter: 15 mm Output shaft diameter: 3 mm Type: 2phase 4wire (A+: Orange; A: White; B+: Black; B: Brown) Phase resistance: 30 ohms How this product solves problems Saves space in compact equipment by providing stepper performance in a small package. Removes wiring uncertainty with clear, labeled phase colors that match standard driver wiring conventions. Reduces trial and error when tuning drivers thanks to consistent phase resistance information. Provides a mechanically compatible shaft size for straightforward coupling to gears, pulleys, or linkages. Compatibility and integration notes Designed for use with standard 2phase 4wire stepper drivers. Confirm driver settings are compatible with a 30 ohm phase resistance before powering. Use appropriate current limiting and driver configuration to protect the motor and driver. Couplings and fittings must match a 3 mm output shaft diameter. Follow the wiring color code exactly to ensure correct phase connections: A+: Orange; A: White; B+: Black; B: Brown. Typical applications Small robotics and automation modules requiring precise, repeatable positioning in limited space. Camera focus or pan mechanisms and compact gimbals where smooth, controlled motion is needed. Precision valve actuation, micro actuator systems, or laboratory instruments that require compact stepper control. What to check before Confirm driver compatibility with 2phase 4wire motors and the motor phase resistance value. Verify mechanical coupling fits a 3 mm shaft and available mounting space accommodates a 15 mm diameter starter. This 15BY Gear Stepper electronic starter delivers a compact, clearly wired solution for precise motion and starting control in small electromechanical systems.