Hydraulic Hinge Types: Barrel, No-Mortise and Concealed
Updated 2026-11-05 · RAYEN 雷茵
What should you measure first?
- Door weight in kg.
- Door height and width.
- Door thickness.
- How far the door must open, and where it should stay open.
- What may show. A barrel stays in view. A concealed hinge shows only with the door open.
- Frame material, because a concealed hinge needs routing in the frame as well as the door.
Barrel hydraulic hinges
JL606, RY8005 and RY8006 look like a butt hinge with a thick knuckle. They are in aluminium, listed as aerospace aluminium.
RY8005 is the 5-inch model and RY8006 the 6-inch. Both have two leaf widths. RY8005 is 138 × 34mm or 132 × 30mm, and RY8006 is 157 × 36mm or 157 × 30mm.
Their leaves sit in a shallow recess. For RY8005 the routing is 140 × 34 × 4mm, 4mm deep in both frame and leaf, or 8mm deep in the leaf alone. For RY8006 it is 158 × 36 × 4mm, cut the same way.
How many hydraulic hinges does a door need?
These two models answer that better than any rule of thumb. The set sets the door size:
- One plain barrel and one hydraulic: door up to 2000mm high and 800mm wide.
- Two hydraulic: up to 2200mm high and 900mm wide.
- Three hydraulic: up to 2400mm high and 1200mm wide.
Weight moves with the count too. RY8005 takes 55kg on two and 75kg on three. RY8006 takes 75kg on two and 100kg on three. The third hinge does not add a full share, so do not scale these figures yourself.
| Model | Maximum door weight | Maximum opening angle | Hold-open |
|---|---|---|---|
| EDA-09C | 60kg (3 hinges) | — | — |
| EDA-20 | 80kg (3 hinges) | — | — |
| EDA-23 | 80kg (3 hinges) | — | — |
| RY8001 | 60kg (2 hydraulic) / 80kg (2 hydraulic + 1 plain leaf) / 90kg (3 hydraulic) | 180° | Any angle between 90° and 180° |
| RY8002 | 60kg (2 hydraulic) / 80kg (2 hydraulic + 1 plain leaf) / 90kg (3 hydraulic) | 180° | Any angle between 90° and 180° |
| RY8003 | 70kg (2 hinges) | 110° | — |
| RY8004 | 60kg (2 hydraulic) / 80kg (2 hydraulic + 1 plain leaf) / 90kg (3 hydraulic) | 110° | Any angle between 90° and 110° |
| RY8005 | 2 hydraulic 55kg or less / 3 hydraulic 75kg or less | 180° | 90-180° |
| RY8006 | 2 hydraulic 75kg or less / 3 hydraulic 100kg or less | 180° | Any angle between 90° and 180°, positive stop at 160° |
JL hydraulic hinges in two grades
| Model | Max door weight | Max door width (spindle to edge) | Door leaf thickness | Max opening angle | Hold-open range |
|---|---|---|---|---|---|
| JL607 | 50kg / 70kg | ≤750mm / ≤950mm | 40–60mm | 110° | 90–110° |
| JL606 | 60kg / 80kg | ≤800mm / ≤1000mm | 40–60mm | 180° | 85–120° |
| JL608 | 60kg / 80kg | ≤800mm / ≤1000mm | 40–60mm | 110° | 90–110° |
| JL609 | 60kg / 80kg | ≤800mm / ≤1000mm | 40–60mm | 180° | 90–180° |
JL606 is the barrel model of this group. JL607, JL608 and JL609 are concealed and three-dimensionally adjustable. All four come as two hydraulic or as 2+1, which is two hydraulic and one plain hinge, and all have a closing valve.
Multifunction hinges for timber doors
| Model | Overall size | Knuckle diameter | Suitable for |
|---|---|---|---|
| D Type | 155 × 88mm | Ø24mm | Timber entrance doors and room doors |
| EK Type | 157 × 103mm | Ø23mm | Timber entrance doors and room doors |
| E Type | 155 × 97mm | Ø24mm | Timber entrance doors and room doors |
D Type is the no-mortise model. EK Type adds a cushion at small opening angles, which suits a room door that should not slam in the last part of its travel. All three are aluminium alloy. No door weight is printed for these three, so send us the door and we confirm it.
Concealed hydraulic hinges
Three-dimensional adjustment is the reason buyers pay for this type. You can correct the door after hanging it.
- RY8001: 190mm long, 30mm leaf, door 40–60mm, 180°, stays at any angle from 90° to 180°.
- RY8002: 175mm long, with a routing edge distance of 4–13mm on door and frame, 180°.
- RY8003: 28mm leaf, door 35–60mm, 110°, 70kg on two hinges. It is the same either way up, left or right.
- RY8004: 28mm leaf, door 35–60mm, 110°, stays between 90° and 110°.
- EDA-09C, EDA-20 and EDA-23: rated on three hinges, at 60kg, 80kg and 80kg.
Watch the set when you compare. A figure for two hinges and a figure for three hinges are not the same claim. RY8001 carries 60kg on two hydraulic, 80kg on two hydraulic and one plain leaf, and 90kg on three hydraulic.
A worked example
A timber room door is 2100mm high, 850mm wide, 45mm thick and weighs 70kg. The owner wants it to stay open at 90° and wants a visible hinge. RY8006 on two hydraulic fits: 75kg, 2200mm, 900mm. RY8005 on two stops at 55kg. On three it carries 75kg, and it costs you a third routing.
If the same door must hide its hinges, look at RY8001 with two hydraulic and one plain leaf, rated at 80kg.
What should you write on the order?
- Model, and grade if it has one, such as JL609.80.
- The set: how many hydraulic hinges and how many plain.
- Door height, width, thickness and weight.
- Leaf width on RY8005 and RY8006.
- Finish, from the list on the model page.
Questions buyers ask
Is a hydraulic hinge a replacement for a door closer?
It does the closing inside the hinge, so a timber door within its limits needs no separate unit. For heavier doors, compare the floor spring and overhead closer ranges.
Can every hinge on the door be hydraulic?
Yes. Most models are rated on two or three hydraulic hinges, and some also on a mixed set. Order the set the rating names, because the limit changes with it.
