BY PM Stepper Motor 20BY25-034A 20 mm 6 V Permanent Magnet Stepper Motor

Description

• Compact 20 mm diameter 22 mm length for small motion systems
• Operates at 6 V DC (10 %) with bipolar 2-phase 2-2 excitation and 18 step angle
• Delivers 50 gfcm holding torque and 15 gfcm pull-out torque (at 1000 Hz & 6 V)
• Low noise ( 50 dB) with maximum no-load speed up to 2100 rpm
• Ideal for security cameras and compact automation applications

The BY PM Stepper Motor 20BY25-034A is a 20 mm permanent-magnet stepper motor designed for compact and precise motion control applications such as security cameras, optical devices, and automation equipment.

Operating at 6 V DC (10 %), this motor features a bipolar 2-phase 2-2 excitation method and an 18 step angle, offering accurate positioning and smooth step-by-step movement.

It provides a holding torque of 50 gfcm and pull-out torque of 15 gfcm (at 1000 Hz & 6 V), ensuring stable performance under variable loads.

Built with precision windings and Class E insulation, the 20BY25-034A achieves low noise ( 50 dB), strong reliability, and long-term durability in miniature automation systems.

View moreWhat’s Included1 BY PM Stepper Motor 20BY25-034ADimensions

Diameter: 20 mm

Body Length: 22 mm

Height: 26.4 mm

Weight: 25 g

Specifications

Model Number: 20BY25-034A

Model Type: BY Permanent Magnet Stepper Motor

Drive Voltage: 6 10 % V DC

Rated Voltage: 6 V

Phase: 2

Exciting Method: 2-2

Exciting Mode: Bipolar

Step Angle: 18

Moment of Inertia: 0.06 gcm

Rotation Direction: CW / CCW

Resistance: 5 10 %

Inductance: 2.6 mH 20 %

Max Starting Pulse Rate: 500 Hz

Max Response Pulse Rate: 700 Hz

No-Load Speed: 1500 rpm (max 2100 rpm)

Holding Torque: 50 gfcm

Pull-Out Torque: 15 gfcm (at 1000 Hz & 6 V)

Detent Torque: 14 gfcm

Noise: 50 dB

Axial Endplay: 0.5 mm

Radial Endplay: 0.1 mm

Nickel Plating Thickness: 0.002 mm

Dielectric Strength: 500 V AC / 1 s 3 mA

Insulation Resistance: 100 M (500 V DC)

Insulation Class: E

Temperature Rise: 115 C

Operating Temperature: 10 C to +50 C

Storage Temperature: 30 C to +80 C

Operating Humidity (Non-Condensing): 20 90 % RH

Storage Humidity (Non-Condensing): 8 90 % RH

Testing Conditions: 20 C 2 C, 65 % 5 % RH

Basic Placement: Horizontal

Application Field: Security Camera