October 8, 2013 by Editor · Comments Off
The hinge on the left is a stainless steel 4″ ball bearing butt hinge spotted on a fire door in the gents’ toilet of a busy Exeter department store. The hinge on the right is a new stainless steel 4″ ball bearing butt hinge, pictured for comparison purposes. The top bearing has collapsed, its ball bearings have been lost, the washer can be seen protruding out of the joint like a slipped disc. The effect of this is that the whole weight of the door is resting on the centre knuckle which has compressed onto the collar below causing them to wear each other away. The degraded state of this hinge increases the opening force potentially causing it to fall foul of the recommendations of BS8300 (DDA/The Equalities Act). A Hi-load hinge, such as the Royde & Tucker H102 fixed pin hinge, would have been a much better choice for this door. Why?
1. The frequency of use for this door could be reasonably predicted to be very high
2. The width of the door was at least 926mm, a long lever (wide door) exerts more power at its axle (hinges) than a shorter one (or narrower door)
3. The door had a door closer, which increases the “adjusted door weight” thus; a door closer adds 20% to the weight, and a back check door closer adds an additional 75%
September 4, 2013 by Editor · Comments Off
Made by Exidor in the UK, the EXIDOR 4900 are now in stock at Doorstuff. The Exidor overhead door closer range (4900, 4930, 4910, 4940, 4700, 4730, 4800, 4830 and 4820) are direct replacements for the old Jebron door closers and feature the unique high efficiency cam and roller action which is ideal for use where the Equality Act 2010 (formerly the DDA) and BS8300 – Approved Document “M” need to be considered. The cam and roller ‘gears’ the action of the door closer to provide the optimum opening and closing forces where they are needed – as the door is near the frame. The rapidly falling opening force makes the door easier to open, whilst an increasing closing force as the door nears the frame on the closing cycle, ensures safe, secure closing. Efficiency is expressed by describing the closing force as a percentage of the opening force. Therefore a 20 Newtons closing force and 27 Newtons opening force would give an efficiency of: 20÷27 x 100 = 74%. The greater the efficiency, the easier it is to open the door. Exidor’s cam and roller mechanism, with precision engineered parts and unique bearings, result in very highly efficient door closers.
January 27, 2013 by Editor · Comments Off
A hold open and free swing door closers which can be fitted on either side of the door in Fig 1 or Fig 66 all in one box. This British made door closer gives good reliability with the flexibility that one unit covers both eventualities. In stock with quantity discounts.
Is there a special tool required to install the AA45 concealed door closer. I was wondering how you open and fix the second face against the spring tension?
May 31, 2012 by Editor · Comments Off
Yes, they come with a small metal retainer which holds the chain out while you fit it. You’ll need to attach the plate to the frame (or a spare bit of wood) then pull the chain out as far as it’ll come and slip in the retainer. Next detach the plate from the frame and fit the door closer into the door, then finally re-attach the plate to the frame and remove the retainer, so the spring can re-tension the chain.
Our local club has an external opening emergency exit door which is fitted with an Exidor panic bar on the inside. Externally there is no way of opening the door and due to the door opening to an external smoking area we would like to fit some sort of hardware whereby the external handle can be disabled for security, but enabled while the property is occupied. This needs to be locked at night. What can we use?
March 14, 2012 by Editor · Comments Off
We would suggest a door closer, such as the Geze TS2000, used in combination with an outside access device, such as the Exidor 322EC lockable door handle which will be freely usable during club opening hours, then locked at night.
February 7, 2012 by Editor · Comments Off
Q: The communal exit/entrance door to my apartment block closes with a loud bang, and we have been told by the on site maintenance person that after he reduced the noise to an almost acceptable slam that there would be no further improvement or adjustment. Is it technically possible to close this door, onto its electronically controlled locking mechanism silently? Is there any legally enforceable noise level the management company should operate too, and do you have products that can achieve this?
A: Thank you for your interesting question. The answers are “yes”, and “sort of yes”. A heavy duty door closer like the Geze TS4000 adjusted correctly, is capable of closing your door strongly but silently. You can see how the adjustment is crucial to the correct operation of the door closer by watching our video here on the web site. Building Regulations Part E concern the transmission of sound within a building, there aren’t legally enforceable rules relating to door slamming, but the requirements of Part E are that noise which effects building users should be minimised as much as possible. Hope this helps!
I need a door closer that is able to close a steel door which is 400kg in weight. The door size is w1000mm x h2050mm.
February 1, 2012 by Editor · Comments Off
Q: I have a door that is a glass panel at the top. The wood above the glass to the door stop is approx 73mm. The door opens outwards. The door is on a warehouse and is used quite a lot by the public. I have brought 2 closers from my local DIY centre but they do not fit due to the narrow bit at the top. What do you recommend?
December 22, 2011 by Editor · Comments Off
A: There are two possible solutions; Option 1.) Using a door closer with a Drop Plate, e.g. the Geze TS2000NVBC (which is a really good mid-range, mid-price model) - the drop plate (shown above) allows the body to be set lower than the fixing positions, over the glass in this case, and it is an extra £18.00 + VAT. Option 2.) Using a guide rail door closer, but buying the “L” version which is designed to be fitted in “Figure 66″ - the body on the door and the guide rail on the frame. You can see the Geze TS5000L at this link (scroll down to “L”), and then see the fitting guide showing Figure 66 mounting.
December 5, 2011 by Editor · Comments Off
We only stock Geze Briton and Eurospec door closers we’re not sure the equivalent product to your Yale closer. If you need further help, or would like assistance selecting the right alternative product, please get in touch.
Q: I am looking for a door opening rate, and travel extent, restrainer to limit the RATE at which the wind could snatch an outward opening patio door. Closing force should be low or zero. Do any door closers do this? Could any be mounted in reverse to achieve this?
October 15, 2011 by Editor · Comments Off
A: What you’re looking for is a “back check” door closer. This feature dampens or brakes the opening, as well as controlling the close as a normal door closer. You can look at the TS2000NVBC or the TS4000 which comes with back check as a standard feature. The TS4000 can be adjusted down to closing power 1, which is the lowest force available.