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Stepper Gear Motor:ry, 1, speed of the motor can be easily controlled, 2, it made up of a stepper motor and a planetary gearbox - details see: https://www.machineto.com/25pa-28byg-12v-small-planetary-gearbox-with-stepper-motor-10239087

Technical Datas of Stepper gear motor 25PA/28BYG

PLANETARY GEAR STEPPER MOTOR

Housing Material: Metal

Backlash at No-load: ≤1°

Bearing at Output: Ball or Sleeve

Permissible Overhung Load: ≤2.5Kg

Permissible Thrust Load: ≤0.5Kg

Max. Radial Play: ≤ 0.05mm

Max. Thrust Play: ≤0.3mm

Gearbox Data

Reduction Ratio	X:1	4	5	16	19	22	64	76	90	107
Exact Reduction Ratio	X:1	4	4 3/4	16	19	22 9/16	65	76	90 1/4	107 11/64
Number of gear trains	#	1	1	2	2	2	3	3	3	3
Max Permissible Torque	Kg.cm	5	5	7	7	7	9	9	9	9
Moment Permissible Torque	Kg.cm	10	10	15	15	15	20	20	20	20
Gearbox Length	mm	21	21	26	26	26	31	31	31	31

Motor Specifications:

Model	Step Angle	Length (Ld)	Phase Voltage	Phase Current	Phase Resistance	Phase Inductance	Holding Torque	Lead Wire
	(°)	(mm)	(V)	(A)	(Ω)	(mH)	(g.cm)	(#)
28BYGH32-067-4A/B	1.8	32	3.75	0.67	5.6	3.4	600	4
28BYGH32-095-6A/B	1.8	32	2.66	0.95	2.8	0.8	430	6
28BYGH45-067-4A/B	1.8	45	4.56	0.67	6.5	4.9	950	4
28BYGH45-095-6A/B	1.8	45	3.22	0.95	3.4	1.2	750	6
28BYGH51-067-4A/B	1.8	51	6.20	0.67	9.2	7.2	1200	4
28BYGH51-095-6A/B	1.8	51	4.35	0.95	4.6	1.8	900	6