67 Door Controls Concealed Cam-Motion® Designed not to be seen, whilst still offering market-leading performance across a wide range of applications with high efficiencies and easier opening. Exactly like our surface mounted Cam–Motion® units, this highly efficient mechanism helps to meet the requirements of BS 8300. Combining this with the CE mark and fire testing for timber doors and metal doors, our concealed closers are ideal for both residential and commercial applications. Concealing a door closer within the door leaf not only carries aesthetic benefits but also offers the door closer protection from abuse or tampering. Additionally, whilst these closers are not classed as true anti-ligature products, by nature of being concealed they do provide less opportunity than surface mounted units. Range benefits Reduced risk of tampering Less vulnerability to vandalism Anti-ligature properties due to less exposed ligature points Concealed to give an aesthetic and uncluttered appearance Torque curves Cam-Motion® technology makes an ideal opening a door easier by reducing the force required making them ideal solution for children, the elderly and the less able. The graph below demonstrates the rapidly decreasing opening force of our DC840 concealed Cam-Motion® door closers: 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Angle (degrees) Torque (Nm) 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Angle (degrees) Torque (Nm) 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Angle (degrees) Torque (Nm) 10 20 30 40 50 60 DC700 DC500 DC840
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