ltems | Technical data |
Dimension | 157x101.5xφ27.5x4mm |
Maximum opening angle | 180°single direction,left or right open |
Material | Aviation aluminium |
Finish | Aviation aluminium anodized,Gold,Silver,Grey,Black,Bronze,Copper,etc. |
Closing force | 50/70kgs:8~10N.m 90kgs:14~18N.m |
Lifespan | 200,000cycles |
Maximum door weight | ≤90kg |
Maximum door height | ≤2400mm |
Maximum doo rwidth | ≤1200mm |
Door thickness | ≥40mm |
Scope of application | Fire doors,Security doors,Steel doors,Wooden doors Framed glass doors,etc. |
Applicable places | Hotel,Restaurant,Office building,Bar,Hidden door,Internal doors |

90°-180°free stay open, easy access.
Auto matically closing from 80°. Soft closing from 30°, wind-proof Prevent door slamming and anti-pinch.
Closing speed can be freely adjusted No need to distinguish left and right open,user friendly,saving labor,less inventory.
Latching or no latching is optional,humanized and safer Speed regulation is integrated on one hinge,easier adjustment.
All rotating parts are connected with bearings,mute,efficient and durable.
Installation and introduction




• Each hinge is Machined for precise installation and smooth movement.
• Each set of hinge consist of separate spring hinge and hydraulic hinge. 2pc/set or 3pc/set according to different load capacities.
• The spring hinge is for closing back the door, hydraulic hinge is for damping, so it will close softly. Speed is adjustable through adjusting hydraulic force.
• Suitable for various of wooden door, metal door, aluminum frame glass door, security door, fire door etc.
• It can prevent door slams and finger pinch, it makes the door closer softly and quietly.
• In addition to being used for new renovation projects, this hinge can also be used for old renovations. If the door has been installed with a 4-inch hinge before, it can be adapted to our hinge by enlarge the slot a little.
Model No. | Product | Optional features | Applicable door specifications / types | Remark | |||||
Latching | Finish | Door Weight(kg) | Door Height(mm) | Door Width (mm) | Door Thickness (mm) | Application | |||
M5-50B | M5 Hydraulic door hinge / 50kg / With latching force | 口B(with latching force )口W (No latching) | 口Gold口Silver
口Black 口Bronze 口Copper Other customizable |
≤50 | ≤2000 | ≤800 | 40~60 | Wooden door, metal door, aluminum door | spring 1pc hydraulic 1pc |
M5-50W | M5 Hydraulic door hinge / 50kg / No latching | ||||||||
M5-70B | M5 Hydraulic door hinge / 70kg / With latching force | 60~70 | ≤2200 | ≤900 | spring 1pc hydraulic 1pc empty 1pc | ||||
M5-70W | M5 Hydraulic door hinge / 70kg / No latching | ||||||||
M5-90B | M5 Hydraulic door hinge / 90kg / With latching force | 70~90 | ≤2400 | ≤1200 | spring 2pcs hydraulic 1pc | ||||
M5-90W | M5 Hydraulic door hinge / 90kg / No latching |
M3 hydraulic hinge-black



M3 hydraulic hinge-gold



M3 hydraulic hinge-silver



Pentagon experienced in design and development of hydraulic door hardware and exported more than 15 years, selling the hardware all world more than 52 countries. We provide highly efficient and all-round service for you.
Strict Quality Control
Meet the need of client with automatic and control service, Keep the factory working innovate and improve all the time, and to realize the forever running, keep develop with the employees and the partners, Keep High quality is our life at first.
Standardized Production & Creative Design
Using new outstanding practicality, security, fashionableness and other good features of products are ensured by almost captious material selection, advanced production equipment, first class production technology, creative design, perfect service and integral production management and quality system.

Product Dimension