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).
Standard Stepper Motor Linear Actuators
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.
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.
Custom Stepper Motor Linear Actuator Options
Combining cutting edge-motor and lead screw technologies, pre-engineered stepper motor linear actuators deliver compact linear motion to high-precision applications.
Why Thomson Stepper Motor Linear Actuators?
Thomson offers 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.
Customization Options
Thomson routinely collaborates with original equipment manufacturers globally to solve problems, boost efficiency and enhance the value passed on to their customers. Our technology and application experience can be harnessed to help you go beyond standard products to fit the exact needs on your next product.
Where Can You Get Started?
Thomson provides extensive online resources to help you no matter where you may be in the purchase decision process:
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.
Technical Articles
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Implementing Anti-Rotational Guidance for Stepper Motor Linear Actuators
Integrating lead screws with stepper motors is a simple and cost-effective method of getting precise linear motion. But achieving that precision requires anti-rotational guidance, which must either be added externally by the user or designed in by the manufacturer. Determining which option makes sense for you requires an analysis of your need for a guidance system and weighing the advantages and disadvantages of each approach.
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Reduce Your Linear Motion Assemblies to a Single Component with Motorized Lead Screw Actuators
When it comes to specifying linear motion within a machine, system designers have many options from which to choose. Making the right choice can impact the ease of installation, footprint and cost of operation. A common driving mechanism for achieving linear motion is a stepper motor and externally supported lead screw-based assembly. A simpler, easier-to-install approach, however, is to select a drive mechanism with built-in guidance and support, thus removing the need for external components that would normally perform these functions and the complexity that comes with them.
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 | |||||||||
| MLxX8 | MLx11 | MLx14, MLx17 | 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 | ||||||||
| MLxX8 | MLx11 | MLx14, MLx17 | 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
