How to Choose Linear Actuator Stroke Length for an OEM Project
Stroke length is the distance the actuator shaft travels from fully retracted to fully extended. In real equipment, the required stroke is rarely just the visible movement distance. It depends on linkage geometry, mounting points, available space, and mechanical safety margin.
For RFQ, send the required travel distance, retracted length limit, extended length limit, and mounting sketch if available.
1. Start from the motion distance
Measure the actual movement needed at the driven part. For a door, hatch, lift platform, medical backrest, or fixture, the driven point may move in an arc rather than a straight line.
2. Check retracted and extended length
Two actuators with the same stroke can have different closed lengths. Confirm whether the actuator can physically fit in the available space at both travel ends.
3. Leave mechanical margin
Avoid designing the mechanism so the actuator always hits its absolute end position under load. Limit switches help, but the mechanical design should still allow a small margin.
4. Send these details for selection
- Required travel distance
- Mounting hole distance when closed and open
- Load direction and approximate force
- Voltage, speed, and feedback requirement
- Quantity and destination country