28mm Diameter Planetary Gearbox - SOURCE ENGINEERING INC

28mm Diameter Planetary Gearbox

28PA-28BYG

Features:

NEMA 11 Stepping motor
Gear Ratios from 4:1 up to 139:1
Rated Output Torque up to 3.9NM (555 oz-in)

Gear Box Data

Reduction Ratio	X:1	3.71	5.18	13.764	19.217	26.832	51.065	71.298	99.548	138.99
Number of gear trains	#	1	1	2	2	2	3	3	3	3
Max Permissible Torque	kg.cm	20	20	30	30	30	40	40	40	40
Moment Permissible Torque	kg.cm	40	40	50	50	50	60	60	60	60
Gear Box Length	mm	27.2	27.2	35	35	35	42.7	42.7	42.7	42.7

Motor Specifications

Model	Step Angle	Length (Ld)	Phase Voltage	Phase Current	Phase Resistance	Phase Inductance	Holding Torque	Lead Wire
Model	°	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	6.8	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	9.6	7.2	1200	4
28BYGH51-095-6A/B	1.8	51	4.35	0.95	4.6	1.8	900	6

Replace □ with A = single shaft; replace □ with B = double shaft