20BYGH250C Two phase hybrid stepper motorDetailed product description：

20BYGH250C two-phase hybrid stepper motor

The 20BYG250 two-phase hybrid stepper motor is a naming convention for stepper motors prior to 2008, which means
20: Motor frame size 20 (flange side length 20mm)
BYG: Hybrid stepper motor
250: Two phases (with a distribution angle of 1.8 degrees)
The specific motor models are: 20BYG250/20BYG250A/20BYG250B/20BYG250C/20BYG250D
This naming method cannot reflect the specific body length, single and double output shafts, rated current and other basic parameters of stepper motors, which brings great difficulties to users in selecting and replacing accessories. Therefore, since 2009, a new naming method has been adopted for stepper motors.  

Step Angle 1.8 °
Step Accuracy ± 5%
Temperature Rise 75 ℃ Max
Environmental Temperature Range: -20 ℃~+50 ℃
Insulation Class B
Insulation Resistance 500VDC 100M Ω Min
Dielectric Strength 500VAC 50Hz 1Ma Minute
Radial runout 0.02mmMax (450g load)
Axial clearance 0.08mmMax (450g load)
Matcheddriver YK2203MA/YK2304MA/YK2404MA

model Model	step angle Step Angle (O)	Body length Length L(mm)	rated current Current (A/phase)	Phase resistance Resistance (Ω/phase)	mutual inductance Inductance (mH/phase)	Maintain torque Holding torque (N.m)	moment of inertia Rotor inertia (kg.cmtwo)	weight Weight (kg)
20HB30-064	one point eight	thirty	zero point six	six point five	one point seven	zero point zero one eight	two	zero point zero six
20HB33-064	one point eight	thirty-three	zero point six	six point five	one point seven	zero point zero two six	two	zero point zero seven
20HB42-084	one point eight	forty-two	zero point eight	five point four	one point five	zero point zero three eight	three	zero point zero eight

The above are only representative products and can be made separately according to requirements.
The standard output shaft of the 20HB series stepper motor is the optical axis, with a diameter of 5mm and an extended shaft length of 10mm or 15mm. It can be milled flat, double output shafts, or the output shaft length can be changed according to user requirements; Electrical parameters can also be customized according to user requirements, such as current magnitude; Or adjust the parameters according to the user's usage environment, for example, the power supply voltage of 12V requires low-speed stability.