A useful starting point for
- Grippers and miniature clamps with a defined contact-force window.
- Instrument mechanisms that alternate between free travel and controlled contact.
Configuration & OEM engineering
Force Control Micro Servo Actuators
Control contact force in a miniature mechanism
Force control micro servo actuators suit projects where an axis must approach, make contact and maintain a defined interaction with a part. Start with the force at the tool, the compliance of the assembly and the acceptable transient at first contact. The motor, screw, sensor and controller need to be evaluated together.
Request the applicable drawing / CAD revisionThis is a configuration review, not a stocked SKU listing. Ratings, documentation availability, sample scope and lead time are confirmed for the reviewed design.
The first design decision
Do you need measured output force, or is motor-current limiting sufficient for your process?
Define these boundaries
- Motor current alone does not establish calibrated force at the tool; transmission friction and mechanical loading affect the relationship.
- Safety functions, sensor failure response and permissible contact force must be specified by the system designer.
Configuration choices and required evidence
Use this matrix to compare candidate configurations. Entries describe decisions to make and evidence to request; they are not unverified product ratings.
| Design input | Options to review | Evidence for the decision |
|---|---|---|
| Force feedback | Inline load cell, external sensor or current-based estimate | Sensor range, calibration procedure, bandwidth and the location at which force is defined. |
| Mode transition | Position approach followed by force regulation | Approach speed, contact threshold, allowed overshoot and settling window. |
| Controller interface | Local loop or host-controlled loop, subject to review | Command rate, feedback latency, fault reporting and behavior after communication loss. |
| Mechanical compliance | Rigid tool, compliant tip or spring-loaded interface | Tool stiffness, travel stops and off-axis reactions in the complete assembly. |
Agree on prototype acceptance before sampling
- 01
Define force at a physical interface
State whether the requirement applies at the actuator rod, gripper fingertip or end effector. Include leverage and any return spring.
- 02
Test contact transitions
Record approach, initial contact, holding and release with representative parts. Agree on transient and steady-state acceptance separately.
- 03
Check sensor and power faults
Review saturation, disconnected feedback and loss of power before approving the control architecture. A travel stop is not a force sensor.
Define the inspection and release package before fixing the sample acceptance criteria.
A practical engineering handoff
Prepare your force control micro servo actuators RFQ
Copy or download this editable text checklist, fill in the operating conditions and send it for review. For confidential drawings, agree on an exchange method and confidentiality terms first. The website form accepts text; it does not upload CAD.
Engineering RFQ — Force Control Micro Servo Actuators Source: https://minilinearactuators.com/products/force-control-micro-servo-actuators To: [email protected] Company / contact: Application and project stage: Tool force: target / allowable peak / units: Free-travel and contact speeds; stroke: Sensor location, range and calibration need: Contact stiffness and allowed force overshoot: Controller interface and required update rate: Fault response, mounting envelope and quantities: Required drawings / CAD format and revision: Sample quantity / estimated production quantity: Target milestone: Requirements checklist only. Configuration, documentation availability, acceptance criteria and commercial terms require review.
Email the checklist →
Engineering FAQ
Is force feedback the same as current feedback?
No. Current feedback measures an electrical quantity. Output force may be estimated from it only with an appropriate model and validation. If the process needs measured force at the tool, specify a force sensor and its calibration requirements.
Can one actuator switch between position and force control?
That is a configuration requirement to review, rather than a universal feature. Supply the approach profile, contact trigger, force window and release sequence so the controller and mechanism can be assessed together.
What evidence should accompany a prototype?
Request a released configuration drawing, feedback definition and a recorded contact test against agreed conditions. The test should identify the sensor, sample, control settings, temperature and actual tool geometry.
Compare related architectures
- Precision Linear Servo Actuators →
Separate resolution, repeatability and absolute positioning accuracy.
- Brushless Roller Screw Servo Actuators →
Review the motor, transmission and thermal envelope as one axis.
- Micro Linear Servo Actuators family →
Review your operating point and interfaces
Published and reviewed · Mini Linear Actuators engineering content