Stall Force Demystified: What It Actually Tells You
Stall force is the most misrepresented massage gun specification. We explain what it measures, what it doesn't, and how to use it to predict real-world deep tissue penetration.
10–18 kg
Useful Stall Range
5–15 kg
Typical User Force
20+ kg
Marketing Threshold
The Definition
Stall force is the amount of perpendicular pressure required to stop the motor from completing a full stroke. It is measured in kilograms (or lbs) of applied force. A device with 30kg stall force will not stall until you press it against the body with 30kg of force — roughly the weight of a large dog.
Why It Is Overstated
In practice, therapeutic percussion requires 5–15kg of applied pressure. Stall force ratings above 20kg are marketing numbers — no user applies 25kg of force during self-treatment, and doing so would cause bruising. The practical relevant range is 10–18kg, where most quality devices perform identically.
What to Look at Instead
Motor consistency at your preferred pressure matters far more than peak stall force. Look for brushless motors with closed-loop feedback — these maintain consistent RPM under load rather than slowing down when pressed firmly. This is the real indicator of build quality.