The CE grade 7 butt hinge has been tested to 200,000 cycles and is equipped with ball bearings for reduced friction and increased durability. It is suitable for doors up to 40kg and has been tested to EN 1935 as well as being fire rated for timber doors up to FD120.
The higher the grade, the stronger the steel, and as outlined above it's important that the steel is strong enough to withstand extreme pressure, weight and heat. It is also possible to get Grade 11 and Grade 7 fire door hinges, but these are often only for 30-minute fire doors and they can carry less weight.
Digit 6 – Corrosion resistance
Grade 0: no defined corrosion resistance. Grade 1: mild resistance. Grade 2: moderate resistance. Grade 3: high resistance. Grade 4: very high resistance.
Grade 13 Fire Hinge's can be used on 30 minute and 60 minute fire rated doors conforming to CE 1121 BE EN 1935 Grade 13. It is usual for three Grade 13 fire hinges to be fitted on doors; their positioning is determined by the size, weight and construction of the door and its intended use.
The hinges are often tested alongside the doors they are recommended for use with and are most commonly made of steel, although brass hinge use is popular too. Up to 2002, BS 7352 indicated that a grade 8 hinge would be sufficient to be fitted to a fire door.
It is suitable for doors up to 40kg and has been tested to EN 1935 as well as being fire rated for timber doors up to FD120. The CE grade 7 butt hinge is available to order in multiple finishes.
High performance Grade 14 hinges are fire rated to BS EN 1935, and can support 160kg door weight. This product has been fire-tested for an hour on timber doors. Made with grade 201 stainless steel.
Compliance with British Standards and Building Regulations
In the UK, adherence to the BS EN 1935 standard is paramount. And for a hinge to be suitable for use on fire doors, it must carry a CE mark (demonstrating compliance with EU legislation) and, more recently, a UKCA mark for products in the UK market.
Ball Bearing Hinge
If we said that ball-bearing hinges are among the most durable on the market, we wouldn't be wrong. The primary purpose of this hinge type is to support doors that are heavy and wide. Just as we mentioned, you will typically find a ball bearing between the two separate knuckles.
Digit 6 - Corrosion Resistance
Grade 1: Mild resistance – minimum requirement for internal use. Grade 2: Moderate resistance. Grade 3: High resistance – minimum resistance for external use. Grade 4: Very high resistance- recommended for use in exposed marine atmospheres or very polluted industrial environments.
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Opening to 110°, this hinge gives you full access to the cabinet when the door is open, while ensuring a tight fit to the cabinet frame when the door is closed. Full overlay hinges are used by most kitchen manufacturers as they completely hide/conceal the cabinet that the doors are attached to.
• Grade 0 - No defined corrosion resistance • Grade 1 - Mild resistance • Grade 2 - Moderate resistance Page 5 • Grade 3 - High resistance • Grade 4 - Very high resistance. DIGIT 7 - SECURITY - BURGLAR-RÉSISTANCE.
We recommend ball bearing hinges as the strongest type of hinge, and most suitable for heavy doors. Unlike standard hinges, they have a ball bearing in between the knuckles. These take the stress off the knuckle and prevent the hinges sticking or squeaking, and allow for the door to open much more smoothly.
In general, the ball bearing hinges are higher quality and prevent squeaking of the hinges better than the plain bearing hinges.
Grade 7 Ball Bearing Hinge (Max Load 40kg). They have a CE mark and are Fire door rated. BS EN 1935 rated. Ball bearing hinges have always been very popular for their smooth operation, durability, long lasting design and ability to carry heavier loads than washered hinges.
NFPA 80 does allow spring hinges to be used on fire door assemblies, and requires these hinges to be labeled and to meet the requirements of ANSI/BHMA A156. 17, Standard for Self Closing Hinges & Pivots, Grade 1. The standard mandates that when spring hinges are used, at least two must be provided.
Fire-rated door labels are attached to both the door panel and the door frame, usually on the hinge side of both. The information found on the label of a fire door includes: the testing agency, the door type and the amount of time (in hours or minutes) the door is expected to provide protection.
Grade 11 Ball Bearing Hinges are popular for their smooth operation, durability and ability to carry heavier loads. These hinges are CE marked and Certifire tested for use with FD30 fire doors. Fire rating is achieved when the door is fitted with 3x hinges and intumescent hinge pads.
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Fire door hinges must be used with fire doors because regular door hinges will melt, warp or break under the heat of a fire. This means the fire door will drop and move out of the frame, allowing flames or smoke to get through and increasing the speed at which the fire will spread.