Almost every enquiry we get starts with a model number. The better ones start with two numbers: how much force it takes to pull the drawer open, and how long it takes to close itself.
Those two numbers decide whether a soft-close mechanism feels right in the hand. Get them wrong and the drawer either fights you or slams shut.
1. Pull-out force — what it is and why 15–25 N
Pull-out force is the resistance you feel when you pull a closed drawer or door open. It comes from the spring or the buffer inside the mechanism, not from the slides themselves.
For household cabinet hardware we normally work in the range of 15–25 N. Below that the mechanism may not have enough stored energy to pull the drawer home; above it the drawer feels heavy and the customer complains that it "sticks".
The right value inside that range depends on:
- Drawer weight and depth — a deep, heavily loaded drawer needs more force to be pulled home reliably.
- Slide friction — a lower-grade slide eats part of the energy, so the mechanism has to make up for it.
- How the customer wants it to feel — this is a product decision, not only an engineering one. Some brands want a light, easy pull; others want a positive, damped feel.
2. Return time — usually 0.8–1.2 s
Return time is how long the mechanism takes to bring the drawer from the point of release to fully closed.
We normally hold this between 0.8 and 1.2 seconds. Faster than that and the movement reads as a snap rather than as soft-close; slower and the drawer appears to stall, and users start pushing it — which defeats the purpose.
Return time is set mainly by the damper's viscosity and by the geometry of the mechanism. It is a separate adjustment from pull-out force, and both can be tuned on the same mechanism.
3. The part people forget: the hand-off happened earlier
Both numbers above describe what happens after the mechanism engages. What happens before that is the slide's job.
If the slide does not carry the drawer smoothly into the engagement zone, no damper setting will save the feel. When a customer reports a soft-close that "sometimes works", the cause is usually the slide, not the buffer.
4. How to specify it when you order
Send us these and we can quote without a back-and-forth:
- A drawing or photo of the mechanism, with the mounting points dimensioned.
- The required stroke, in mm.
- Expected drawer or door weight, and whether it is loaded or empty.
- Your target pull-out force and return time — or the feel you are after, if you would rather we propose them.
- Target market and any certification the end product needs.
Damping force and stroke are both adjustable on our mechanisms, so if you do not have exact numbers yet, a sample and a description of the application is enough to start.