Thomson Linear Motion Optmized
Stepper Motor Linear Actuators
Thomson stepper motor linear actuators combine a hybrid stepper motor and a precision lead screw in one compact envelope. Our stepper motor linear actuators are now offered in three basic configurations – rotating screw (MLS), rotating nut (MLN) and actuator (MLA). The open architecture rotating screw and rotating nut motorized lead screws suit applications where external guidance is present or a high level of design flexibility is required, while the closed assembly of the motorized lead screw actuator is ideal to further simplify the design process and remove requirements for external guidance.
Rotating Screw (MLS)
MLS assemblies actuate by having the stepper motor rotate a lead screw and translate a load that is attached to the lead nut.
Rotating Nut (MLN)
MLN assemblies actuate by rotating a nut within the stepper motor body. Motion is achieved by constraining the motor and translating a load attached to the lead screw or constraining the lead screw and translating a load attached to the stepper motor.
Actuator (MLA)
MLAs are a fully housed solution in which the motion is taken care of for you - simply determine stroke length, linear travel per step or revolution, and precision level to select an appropriate model.
Stepper Motor Linear Actuator Specifications (Inch Units):
| S = Rotating Screw (MLS), N = Rotating Nut (MLN), A = Actuator (MLA) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linear Travel / Full Step (μ in.) |
Lead (mm) |
Lead Designator (mm) |
Motor | |||||||||
| MLx08 | MLx11 | MLx14, ML17 | MLx23 | |||||||||
| Diameter Designator [hundredths of in. diameter] | ||||||||||||
| 18 | 18 | 25 | 25 | 31 | 37 | 31 | 37 | 43 | 50 | |||
| 0.063² | 0.013 | 0013 | S,A¹³ | S,N,A¹³ | S¹³ | S¹³ | S,N¹³ | S,N,A¹³ | S¹³ | |||
| 0.125² | 0.025 | 0025 | S,A¹³ | S,N,A¹³ | S¹ | S,N,A¹ | S¹³ | |||||
| 0.157 | 0.031 | 0031 | S,A | S,N,A | S¹ | S,N,A¹ | ||||||
| 0.165 | 0.033 | 0033 | S¹ | |||||||||
| 0.179 | 0.036 | 0036 | S,A¹³ | S,N,A¹³ | ||||||||
| 0.200 | 0.040 | 0040 | S¹ | S,N,A¹ | ||||||||
| 0.209 | 0.042 | 0042 | S,A¹³ | S,N,A¹³ | S¹³ | S¹³ | S,N¹³ | S,N,A¹³ | ||||
| 0.250 | 0.050 | 0050 | S,A | S,N | S,A¹ | S,N,A¹ | S¹ | S,N,A¹ | S¹³ | S¹³ | ||
| 0.313 | 0.063 | 0063 | S,A¹ | S,N,A¹ | S | S,N,A | S¹ | |||||
| 0.357 | 0.071 | 0071 | S,A¹ | S,N,A¹ | ||||||||
| 0.394 | 0.079 | 0079 | S,A¹ | S,N,A¹ | S¹ | S,N,A¹ | ||||||
| 0.417 | 0.083 | 0083 | S | S¹ | S,N | S,N,A¹ | ||||||
| 0.490 | 0.098 | 0098 | S¹ | |||||||||
| 0.500 | 0.100 | 0100 | S,A | S,N | S | S,N,A | S¹ | |||||
| 0.591 | 0.118 | 0118 | S,A¹ | S,N,A¹ | ||||||||
| 0.625 | 0.125 | 0125 | S,A¹ | S,N¹ | S,A | S,N,A | S¹ | S,N,A¹ | S¹ | |||
| 0.787 | 0.157 | 0157 | S,A¹ | S,N,A¹ | ||||||||
| 0.833 | 0.167 | 0.167 | S | S | S,N | S,N,A | ||||||
| 0.960 | 0.192 | 0.192 | S,A¹ | S,N,A¹ | ||||||||
| 1.000 | 0.200 | 0200 | S,A | S,N | S,A¹ | S,N,A¹ | S¹ | S,N,A¹ | S¹ | |||
| 1.180 | 0.236 | 0236 | S¹ | |||||||||
| 1.250 | 0.250 | 0250 | S,A¹ | S,N,A¹ | S | S | S,N | S,N,A | S¹ | S¹ | ||
| 1.500 | 0.300 | 0.300 | S¹ | S,N,A¹ | ||||||||
| 1.665 | 0.333 | 0.333 | S,A¹³ | S,N¹³ | ||||||||
| 1.875 | 0.375 | 0.375 | S,A¹³ | S,N¹³ | S¹ | S,N,A¹ | ||||||
| 2.000 | 0.400 | 0.400 | S,A | S,N | ||||||||
| 2.500 | 0.500 | 0500 | S,A¹³ | S,N¹³ | S,A | S,N,A | S | S | S,N | S,N,A | S¹ | S¹ |
| 3.750 | 0.750 | 0750 | S,A¹³ | S,N,A¹³ | S¹³ | S,N,A¹³ | ||||||
| 4.000 | 0.800 | 0.800 | S¹³ | |||||||||
| 5.000 | 1.000 | 1000 | S³ | S³ | S,N³ | S,N,A³ | S¹³ | |||||
| 6.000 | 1.200 | 1.200 | S¹³ | S,N,A¹³ | ||||||||
| 7.500 | 1.500 | 1.500 | S¹³ | |||||||||
1. Some leads may not be available in high-performance nut material, rotating nut (MLN) configurations or some anti-backlash nuts. Contact Thomson for more detail.
2. Fine-pitched lead screws may have substantially lower load capacities compared to traditional lead screws.
3. Lead screw not available in precision grade accuracy (P)
Stepper Motor Linear Actuator Specifications (Metric Units):
| S = Rotating Screw (MLS), N = Rotating Nut (MLN), A = Actuator (MLA) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Linear Travel / Full Step (mm) |
Lead (mm) |
Lead Designator² (mm) |
Motor | ||||||||
| MLx08 | MLx11 | MLx14, ML17 | MLx23 | ||||||||
| Diameter Designator | |||||||||||
| M04 | M04 | M06 | M06 | M08 | M10 | M08 | M10 | M12 | |||
| 3 | 0.6 | 006 (0024) | S,A¹ | S,N,A¹ | |||||||
| 5 | 1.0 | 010 (0039) | S | S,N | S,A | S,N,A | |||||
| 6 | 1.2 | 012 (0047) | S,A¹ | S,N,A¹ | |||||||
| 10 | 2.0 | 020 (0079) | S | S | S,N | S,N,A | S¹ | ||||
| 15 | 3.0 | 030 (0118) | S | S,N,A | S¹ | ||||||
| 20 | 4.0 | 040 (0157) | S | S,N | S | S,N | S¹ | ||||
| 25 | 5.0 | 050 (0197) | S | S,N,A | |||||||
| 30 | 6.0 | 060 (0236) | S,A | S,N,A | S¹ | S,N,A¹ | S¹ | ||||
| 40 | 8.0 | 080 (0315) | S³ | S,N³ | S | S,N | |||||
| 50 | 10.0 | 100 (0394) | S | S,N,A | S¹ | ||||||
| 60 | 12.0 | 120 (0472) | S,A | S,N,A | S | S¹ | S,N | S,N,A¹ | |||
| 75 | 15.0 | 150 (0591) | S¹ | ||||||||
| 80 | 16.0 | 160 (0630) | S¹ | ||||||||
| 90 | 18.0 | 180 (0709) | S,A¹³ | S,N,A¹³ | |||||||
| 100 | 20.0 | 200 (0787) | S³ | S | S,N³ | S,N,A | |||||
| 125 | 25.0 | 250 (0984) | S¹³ | ||||||||
| 175 | 35.0 | 350 (1378) | S¹³ | S,N,A¹³ | |||||||
| 225 | 45.0 | 450 (1772) | S¹³ | ||||||||
1. Some leads may not be available in high-performance nut material, rotating nut (MLN) configurations or some anti-backlash nuts. Contact Thomson for more detail.
2. Lead designations for MLA are shown in parenthesis.
3. Lead screw not available in precision grade accuracy (P)
Stepper Motor Linear Actuator Highlights
- Increased Torque Density
- Improved Efficiency
- Rotating Screw, Rotating Nut or Actuator
- Custom Sizes/Leads Available
- Taper Lock Advantage
- Reduced Noise
- Inch or Metric Versions
Stepper Motor Linear Actuator Applications
- Medical Devices
- X-Y Stages
- 3D Printing
- HVAC Control Valves
- Pipetting Devices
- CNC Machines
- Fluid/Syringe Pumps
VIDEO: Stepper Motor Linear Actuator with Taper-Lock
Learn how to correctly service the Thomson stepper motor linear actuator in the field. The precision-engineered units combine a hybrid stepper motor and lead screw in one, compact envelope to provide clear advantages with a solution that is smaller, stronger, and more efficient than alternate technologies.
