One Job, Graded by Force
A hydraulic door closer does one thing — returns a door closed under control — but the force that takes varies enormously between a light office door and a heavy entrance leaf. Closers are therefore graded by power, and the entire selection question is matching the grade to the door. Under-size it and the door never quite closes; over-size it and every user fights the spring.
The grading language comes from EN 1154, which rates closers EN1 (lightest) through EN7 (heaviest) against door width and mass.
The Sizing Table
| Closer grade | Max door width | Max door weight | Typical door |
|---|---|---|---|
| EN 1-2 | 850mm | 40kg | Light interior doors |
| EN 3 | 950mm | 60kg | Standard office doors |
| EN 4 | 1100mm | 80kg | Heavy office / light entrance |
| EN 5-6 | 1250mm | 120kg | Entrance doors, high traffic |
| EN 7 | 1600mm | 160kg | Very heavy or wide leaves |
Two practical notes. Width matters as much as weight — a wide door gives the air and any wind more leverage against the closer. And exposed or windy positions justify sizing up a grade, or choosing an adjustable-grade closer that can be tuned on site.
The Settings That Make or Break Daily Use
Grade gets the closer onto the right door; the valves make it pleasant to live with.
- Closing speed — the main swing from open to nearly closed. Slow enough to be safe, fast enough not to feel broken.
- Latching speed — the final few degrees. A firmer finish here is what actually seats the door into its frame and lock.
- Backcheck — hydraulic cushioning near full-open that catches a door flung by wind or a shove before it slams the wall.
Traffic and fire duty change the spec
High-traffic doors want closers rated for the cycle count, not just the weight. And fire doors are their own category: they need certified closers that self-close and latch reliably from any position, because an open fire door protects nobody.
Closer, Floor Spring, or Something Else?
Overhead closers suit framed doors with a frame to mount on. Frameless glass pivot doors take the same logic underground — a floor spring carries the pivot and hides the hydraulics, as our guide on floor springs explains. Between the two families, virtually every self-closing door in a building is covered.
We stock hydraulic closers across the grade range in our door hardware catalogue, supply them individually with free Klang Valley shipping, and fit and tune them on request. Tell us your door’s width, weight and location, and we will name the grade in one reply.