Linear Stepper Motor Actuators

Linear stepper motor actuators create motion in a straight line rather than the circular motion provided by conventional stepper motors. They are widely used in medical devices, lab automations and semi-conductor industries. GEMS provides a wide range of capative, non-capative and external type of stepper motor linear actuators and various sizes of ACME thread lead screws and trapezoidal metric lead screws. With such a wide catalog of products and experience in manufacturing motors, it becomes easier for us to deliver quality products. Our stepper motor linear actuators come in six standard sizes, NEMA 8, 11, 14, 17, 23 and 34 with a variety of external nuts, anti-backlash nuts and ball screws. You can choose from our standard screw lengths or order your custom one. Our designs are compact and optimized for silent operation. Due to the large scale of our operations in China, we are able to provide inexpensive linear stepper motors for your products.

Here at GEMS Motors, we understand the importance of quality parts for your products and strive to deliver the best quality possible. Our linear motors are designed to be durable and robust, with minimum failure rate.

1.8° 20mm (NEMA 8) Linear Stepper Motor Actuators

Our smallest size linear steppers are available with capative, non-capative and external linear options. Travel per step is ranging from 0.00012 inch (0.003mm) to 0.0005 inch (0.0127mm). Maximum thrust and speed is up to 18 lb (8 kg) and 60mm/s.

nema 8 linear stepper motor nema8 stepper linear actuator

Table 1. NEMA8 stepper motor specifications

Model	Length L	Rated Current	Resistance	Inductance	Holding Torque	Holding Torque	Rotor Interia	Lead wires	Weight
	mm	A	Ω/Phase	mH/Phase	Oz.in	N.m	g.cm2		g
20HS30-0504Z	30	0.5	4.8	1.3	2.6	0.018	2.5	4	50
20HS42-0504Z	42	0.5	7.5	2.4	3.6	0.025	4.5	4	90

Diameter of lead screw (mm)

Screw Diameter (inch)	Diameter of lead screw (mm)	Lead (inch)	Lead (mm)	Travel per step (inch)	Travel per step (mm)	Length of lead screw L2 (mm)
0.138	3.5	0.024	0.6096	0.00012	0.003	4 inch (101.6mm) or custom length
0.138	3.5	0.048	1.2192	0.00024	0.006	4 inch (101.6mm) or custom length
0.138	3.5	0.079	2	0.00039	0.01	4 inch (101.6mm) or custom length
0.1875	4.76	0.025	0.635	0.000125	0.0031	4 inch (101.6mm) or custom length
0.1875	4.76	0.05	1.27	0.00025	0.0063	4 inch (101.6mm) or custom length
0.1875	4.76	0.1	2.54	0.0005	0.0127	4 inch (101.6mm) or custom length

1.8° 28mm (NEMA11) Linear Stepper Motor Actuators

Compact design with capative, non-capative and external linear options. Resolutions ranging from 0.00012 inch (0.003mm) to 0.00166 inch (0.0127mm). Maximum thrust and speed is up to 25 lb (12 kg) and 60mm/s.

nema 11 linear stepper mootr external drive nema 11 linear stepper motor

Table 1. NEMA 11 stepper motor specifications

Model	Length L	Rated Current	Resistance	Inductance	Holding Torque	Holding Torque	Rotor Interia	Lead wires	Weight
	mm	A	Ω/Phase	mH/Phase	Oz.in	N.m	g.cm2		g
28HS33-0804Z	33	0.8	5.3	3.3	8.6	0.06	8	4	110
28HS45-0804Z	45	0.8	7.8	5.4	11.5	0.08	11	4	140
28HS48-0804Z	48	0.8	8.6	6.7	12.9	0.09	13	4	180

Table 2. Lead screw specifications

Screw Diameter (inch)	Screw Diameter (mm)	Lead (inch)	Lead (mm)	Travel per step (inch)	Travel per step (mm)	Length of lead screw L2 (mm)
0.1875	4.76	0.025	0.635	0.000125	0.0031	4 inch (101.6mm) or custom length
0.1875	4.76	0.05	1.27	0.00025	0.0063	4 inch (101.6mm) or custom length
0.1875	4.76	0.1	2.54	0.0005	0.0127	4 inch (101.6mm) or custom length
0.218	5.56	0.024	0.6096	0.00012	0.0030	4 inch (101.6mm) or custom length
0.218	5.56	0.096	2.4384	0.00048	0.0121	4 inch (101.6mm) or custom length
0.218	5.56	0.192	4.8768	0.00096	0.0243	4 inch (101.6mm) or custom length
0.218	5.56	0.333	8.4582	0.00166	0.0422	4 inch (101.6mm) or custom length
	Tr 5 (metric)		1		0.005	100mm - 500mm

1.8° 35mm (NEMA14) Linear Stepper Motor Actuators

GEMS provides capative, non-capative and external linear versions for you to choose from. Resolutions are ranging from 0.00012 inch (0.003mm) to 0.005 inch (0.127mm). Maximum thrust and speed is up to 50 lb (23 kg) and 100mm/s.

nema 14 linear stepper motor nema 14 stepper linear actuator

Table 1. 1.8° NEMA 14 stepper motor

Model	Length L	Rated Current	Resistance	Inductance	Holding Torque	Holding Torque	Rotor Interia	Lead wires	Weight
	mm	A	Ω/Phase	mH/Phase	Oz.in	N.m	g.cm2		g
35HS20-0404A	20	0.4	22	16	7.1	0.05	9	4	90
35HS26-0804A	26	0.8	4.2	4.5	14.2	0.1	10	4	110
35HS28-0804A	28	0.8	5	5	17	0.12	11	4	120
35HS34-0804A	34	0.8	6.5	9.8	25.6	0.18	11	4	160

Table 2. Lead screw specifications

Screw Diameter (inch)	Screw Diameter (mm)	Lead (inch)	Lead (mm)	Travel per step (inch)	Travel per step (mm)	Length of lead screw L2 (mm)
0.218	5.56	0.024	0.6096	0.00012	0.0030	4" (101.6mm) or 6" (152.4mm) or custom length
0.218	5.56	0.096	2.4384	0.00048	0.0121	4" (101.6mm) or 6" (152.4mm) or custom length
0.218	5.56	0.192	4.8768	0.00096	0.0243	4" (101.6mm) or 6" (152.4mm) or custom length
0.218	5.56	0.333	8.4582	0.00166	0.0422	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.05	1.27	0.00025	0.0063	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.1	2.54	0.0005	0.0127	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.2	5.08	0.001	0.0254	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.25	6.35	0.00125	0.0317	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.5	12.7	0.0025	0.0635	4" (101.6mm) or 6" (152.4mm) or custom length
	Tr 5		1		0.005	100mm - 500 mm
0.315	Tr 8		2		0.01	4" (101.6mm) or 6" (152.4mm) or custom length
0.315	Tr 8		4		0.02	4" (101.6mm) or 6" (152.4mm) or custom length
0.315	Tr 8	0.315	8	0.0015	0.04	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.025	0.635	0.000125	0.0031	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.05	1.27	0.00025	0.0063	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.0625	1.587	0.0003125	0.008	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.0833	2.116	0.00041	0.0105	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.17	4.233	0.00085	0.0127	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.2	5.08	0.001	0.0254	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.25	6.35	0.00125	0.0317	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.375	9.525	0.001875	0.0476	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.4	10.16	0.002	0.0508	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.5	12.7	0.0025	0.0635	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	1	25.4	0.005	0.127	4" (101.6mm) or 6" (152.4mm) or custom length

1.8° 42mm (NEMA17) Linear Stepper Motor Actuators

Our Nema 17 linear steppers have large selections of travel-per-step, ranging from 0.00012 inch (0.003mm) to 0.005 inch (0.127mm). The finer resolutions are available by using microstepping or a 0.9° stepper. External, capative and non-capative linear versions are available for this frame size. These linear actuators can generate up to 50 lb (25 kg) thrust force and 100mm/s speed.

NEMA 17 stepper linear actuator NEMA 17 linear stepper motor

Table 1. NEMA 17 stepper motor specifications

Model	Length L	Rated Current	Resistance	Inductance	Holding Torque	Holding Torque	Rotor Interia	Lead wires	Weight
	mm	A	Ω/Phase	mH/Phase	Oz.in	N.m	g.cm2		g
42HS20-0804Z	20	0.8	3.8	4.5	14.2	0.1	24	4	120
42HS28-0604Z	28	0.6	8	10	17	0.12	30	4	150
42HS34-1704Z	34	1.7	1.2	1.8	40	0.28	34	4	220
42HS40-1704Z	40	1.7	1.5	2.8	57	0.4	54	4	280
42HS48-1704Z	48	1.7	1.8	3.2	74	0.52	68	4	350
42HS60-1704Z	60	1.7	2.3	4.6	100	0.7	80	4	480

Table 2. Lead screw specifications

Screw Diameter (inch)	Screw Diameter (mm)	Lead (inch)	Lead (mm)	Travel per step (inch)	Travel per step (mm)	Length of lead screw L2 (mm)
0.218	5.56	0.024	0.6096	0.00012	0.0030	4" (101.6mm) or 6" (152.4mm) or custom length
0.218	5.56	0.096	2.4384	0.00048	0.0121	4" (101.6mm) or 6" (152.4mm) or custom length
0.218	5.56	0.192	4.8768	0.00096	0.0243	4" (101.6mm) or 6" (152.4mm) or custom length
0.218	5.56	0.333	8.4582	0.00166	0.0422	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.05	1.27	0.00025	0.0063	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.1	2.54	0.0005	0.0127	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.2	5.08	0.001	0.0254	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.25	6.35	0.00125	0.0317	4" (101.6mm) or 6" (152.4mm) or custom length
0.25	6.35	0.5	12.7	0.0025	0.0635	4" (101.6mm) or 6" (152.4mm) or custom length
	Tr 5		1		0.005	100mm - 500 mm
0.315	Tr 8		2		0.01	4" (101.6mm) or 6" (152.4mm) or custom length
0.315	Tr 8		4		0.02	4" (101.6mm) or 6" (152.4mm) or custom length
0.315	Tr 8	0.315	8	0.0015	0.04	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.025	0.635	0.000125	0.0031	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.05	1.27	0.00025	0.0063	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.0625	1.587	0.0003125	0.008	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.0833	2.116	0.00041	0.0105	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.17	4.233	0.00085	0.0127	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.2	5.08	0.001	0.0254	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.25	6.35	0.00125	0.0317	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.375	9.525	0.001875	0.0476	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.4	10.16	0.002	0.0508	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	0.5	12.7	0.0025	0.0635	4" (101.6mm) or 6" (152.4mm) or custom length
0.375	9.53	1	25.4	0.005	0.127	4" (101.6mm) or 6" (152.4mm) or custom length

1.8° 57mm (NEMA23) Linear Stepper Motor Actuators

Our Nema 23 linear steppers have large selections of resolutions, ranging from 0.00012 inch (0.003mm) to 0.005 inch (0.127mm). The finer resolutions can be achieved by using microstepping or a 0.9° stepper. External, capative and non-capative linear versions are also available for this frame size. These linear actuators can deliver up to 200 lb (100 kg) thrust and 200mm/s speed.

nema23 stepper linear actuator nema 23 linear stepper motor

Table 1. NEMA 23 stepper motor specifications

Model	Length L	Rated Current	Resistance	Inductance	Holding Torque	Holding Torque	Rotor Interia	Lead wires	Weight
	mm	A	Ω/Phase	mH/Phase	Oz.in	N.m	g.cm2		g
57HS41-1503Z	41	1.5	1.2	2.5	78	0.55	150	4	470
57HS56-3004Z	56	3	1.1	3	142	1	280	4	0.68
57HS76-3004Z	76	3	0.5	2.4	227	1.6	440	4	1050
57HS84-3004Z	84	3	0.57	2.5	256	1.8	530	4	1130
57HS100-4204Z	100	4.2	0.9	3.8	284	2	680	4	1250
57HS112-4204Z	112	4.2	0.9	3.8	355	2.5	800	4	1400

Table 2. Lead screw specifications

Screw Diameter (inch)	Screw Diameter (mm)	Lead (inch)	Lead (mm)	Travel per step (inch)	Travel per step (mm)	Length of lead screw L2 (mm)
0.315	Tr 8		2		0.01	6" (152.4mm) or custom length
0.315	Tr 8		4		0.02	6" (152.4mm) or custom length
0.315	Tr 8	0.315	8	0.0015	0.04	6" (152.4mm) or custom length
0.375	9.53	0.025	0.635	0.000125	0.0031	6" (152.4mm) or custom length
0.375	9.53	0.05	1.27	0.00025	0.0063	6" (152.4mm) or custom length
0.375	9.53	0.0625	1.587	0.0003125	0.008	6" (152.4mm) or custom length
0.375	9.53	0.0833	2.116	0.00041	0.0105	6" (152.4mm) or custom length
0.375	9.53	0.17	4.233	0.00085	0.0127	6" (152.4mm) or custom length
0.375	9.53	0.2	5.08	0.001	0.0254	6" (152.4mm) or custom length
0.375	9.53	0.25	6.35	0.00125	0.03175	6" (152.4mm) or custom length
0.375	9.53	0.375	9.525	0.001875	0.047625	6" (152.4mm) or custom length
0.375	9.53	0.4	10.16	0.002	0.0508	6" (152.4mm) or custom length
0.375	9.53	0.5	12.7	0.0025	0.0635	6" (152.4mm) or custom length
0.375	9.53	1	25.4	0.005	0.127	6" (152.4mm) or custom length
	Tr 10		4		0.02
0.625	15.875	0.125	3.175	0.000625	0.0158	6" (152.4mm) or custom length
0.625	15.875	0.25	6.35	0.00125	0.0317	6" (152.4mm) or custom length
0.625	15.875	1	25.4	0.005	0.127	6" (152.4mm) or custom length

1.8° 86mm (NEMA34) Linear Stepper Motor Actuators

Our NEMA 34 linear steppers can deliver up to 500 lb (230 kg) thrust and 240 mm/s max speed. These large linear actuators are also avialable with external, capative and non-capative versions. The resolutions are ranging from ranging from 0.0005 inch (0.0127mm) to 0.00625 inch (0.1587mm).

nema34 stepper linear actuatr nema 34 linear stepper motor

Table 1. NEMA 34 stepper motor specifications

Model	Length L	Rated Current	Resistance	Inductance	Holding Torque	Holding Torque	Rotor Interia	Lead wires	Weight
	mm	A	Ω/Phase	mH/Phase	Oz.in	N.m	g.cm2		kg
86HS68-4004Z	68	4	0.63	3.2	370	2.6	0.85	4	2
86HS80-6004Z	75	6	0.38	3.5	639	4.5	1.05	4	2.5
86HS80-4208Z	75	4.2	0.72	3.5	497	3.5	1.05	8	2.5
86HS98-5004Z	98	5	0.5	4	966	6.8	1.55	4	3
86HS116-6004Z	114	6	0.6	6.8	1207	8.5	1.8	4	3.5
86HS116-5008Z	114	5	0.75	3.2	824	5.8	1.8	8	3.5
86HS128-5004Z	128	5	0.6	5	1278	9	2.2	4	3.9
86HS155-6004Z	150	6	0.75	8.5	1562	11	2.5	4	4.2

Table 2. Lead screw specifications

Screw Diameter (Inch)	Screw Diameter (mm)	Lead (Inch)	Lead (mm)	Travel per Step (Inch)	Travel per Step (mm)	Length of lead screw L2
	Tr 12		5		0.025	100 - 500 mm
0.625	15.875	0.1	2.54	0.0005	0.0127	6" (152.4mm) or custom length
0.625	15.875	0.125	3.175	0.000625	0.015875	6" (152.4mm) or custom length
0.625	15.875	0.25	6.35	0.00125	0.03175	6" (152.4mm) or custom length
0.625	15.875	0.5	12.7	0.0025	0.0635	6" (152.4mm) or custom length
0.625	15.875	1	25.4	0.005	0.127	6" (152.4mm) or custom length
0.625	15.875	1.25	31.75	0.00625	0.15875	6" (152.4mm) or custom length