Stepper Motor Specs Comparison

Part Number	Photo	Nema Frame	Holding Torque	Rated Current	Rated Voltage	Induct- ance	Rotor Inertia	Shaft Diameter
14M30		14	30 oz in	1.2 Amps	4.8 volts	5.5 mH	.109 oz-in2	0.197 in
23M50		23	53 oz in	1.0 Amps	5.1 volts	10 mH	.547 oz-in2	0.250 in
23M110		23	112 oz in	1.78 Amps	4.2 volts	4.7 mH	1.14 oz-in2	0.250 in
23M160		23	160 oz in	2.47 Amps	4.0 volts	4.2 mH	1.72 oz-in2	0.250 in
23HT175		23	175 oz in	1.41 Amps	5.1 volts	11.0 mH	1.64 oz-in2	0.250 in
34M220		34	220 oz in	4.7 Amps	1.8 volts	1.25 mH	2.20 oz in2	0.375 in
34M315		34	315 oz in	5.0 Amps	2.5 volts	2.9 mH	6.72 oz in2	0.375 in
23HT350		23	350 oz in	6.6 Amps	1.85 volts	1.54 mH	4.59 oz-in2	0.250 in
34HT390		34	390 oz in	6.6 Amps	1.79 volts	1.57 mH	5.47 oz-in2	0.375 in
34M450		34	450 oz in	3.5 Amps	4.3 volts	7.0 mH	10.2 oz-in2	0.375 in
34M470		34	470 oz in	5.9 Amps	2.5 volts	2.6 mH	10.2 oz-in2	0.375 in
42M1625		42	1618 oz in	8.7 Amps	2.13 volts	1.3 mH	49.2 oz-in2	0.625 in
42HT4000		42	4000 oz in	8.0 Amps	5.36 volts	11 mH	88.6 oz-in2	0.750 in

Note: Motor part numbers are for single shaft. Append "D" to part # for double shaft.