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Concealed Door Closers

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CO SERIES
SUPERIOR TECHNOLOGY IN COMPACT BODY REALIZES THE BEAUTY.

APPLICATION (CO-50)

Model Number Max door
dimensions
Max
door
weight
Door thickness Body
thickness
Steel door Wooden door
Without
hold open
With
hold open
With
Back
check
Standard
install-ation
Top jamb
install-ation
Standard
install-ation
Top jamb
install-ation
CO-52 CO-152 CO-52BC 900 x 2100 45kg 40mm 38mm 45mm 43mm 31mm
CO-53 CO-153 CO-53BC 950 x 2100 65kg 45mm 38mm 50mm 43mm 36mm
CO-54 CO-154 CO-54BC 1050 x 2400 85kg 36mm
CO-55 R CO-155 R - 1200 x 2400 120kg 60mm 60mm 65mm 60mm 48mm
CO-55 L CO-155 L - 48mm
CO-56 R CO-156 R - 1800 x 2700 180kg 48mm
CO-56 L CO-156 L - 48mm

Note : Hydlaulic backcheck function is standard function for CO-55 & 56.


APPLICATION (COU-50)

Model Number Max door
dimensions
Max
door
weight
Door thickness Body
thickness
Steel door Wooden door
Without
hold open
With
hold open
With
Back
check
Standard
install-ation
Top jamb
install-ation
Standard
install-ation
Top jamb
install-ation
COU-52 R COU-152 R COU-52BC R 900 x 2100 45kg 36mm 36mm 40mm 40mm 28mm
COU-52 L COU-152 L COU-52BC L 28mm
COU-53 R COU-153 R COU-53BC R 950 x 2100 65kg 28mm
COU-53 L COU-153 L COU-53BC L 28mm
COU-52 HR       900 x 2100 45kg 36mm 36mm 40mm 35mm 28mm
COU-52 HL 28mm
COU-53 HR 950 x 2100 65kg 28mm
COU-53 HL 28mm

CO-50/COU-50 INSTALLATION OPTIONS

In order to ensure total adaptability to the widest range of applications, the concealed series is available with a choice of either standard or top jamb installations. To further enhance the ranges flexibility, options such as hold open and nonhanding for the CO-50 are also available.

EXCEPTIONAL PERFORMANCE-EXCEPTIONAL VALUE

Ryobi's technology in high quality die-casting and advanced production methods have been combined to produce a highly competitive range of performance closers. In-house tested to 500,000 cycles and incorporating precision rack and pinion mechanisms, the concealed closer range offers outstanding quality and performance at a very realistic price.

FULLY HYDRAULIC CONTROLS

Maximum control over the doors closing speed is provided by the easy to operate hydraulic adjustment, whilst the versatile hydraulic mechanism also allows for 1st and 2nd closing (as illustrated), ensuring a smooth and independent control over the doors movement. The added benefit of a latching speed control is available with the COU-50 series and CO-55,56,whilst for the heavy duty CO-55 and 56 a new,adjustable,hydraulic backcheck function is a significant feature.


NEW MECHANICAL BACKCHECK FUNCTION

Available for all models in the series, the new mechanical backcheck (cushion check) function, features setting and adjustment in the guide rail. The cushioned rubber absorbs the power of the door in the event of it violently swinging open, as in the case of high winds or public misuse.
The backcheck facility reduces the possibility of door damage and is particularly important in public buildings, schools and hospitals where the protection of people and property is paramount.
Note:CO-55,56 have hydraulic backcheck function.
Mechanical backcheck function is not necessary for CO-55,56.

ADJUSTABLE DOOR STOP/HOLD OPEN/BACKCHECK ANGLE & HOLD OPEN FORCE

By the positioning of stopper, stop metal fitting (hold open device), and mechanical backcheck device, the door stop angle, hold open angle and backcheck angle are adjustable as required. Hold open force is also adjustable by the hold open force adjustment nut as shown in the chart.


Adjustment of door stop/hold open/backcheck angle
Door stop/Hold open/backcheck angle are adjustable by the posistioning of stopper/stopmetal fitting (hold open device), and mechanical backcheck device at as shown in illustration.





Adjustment of hold open force
Hold open force is adjustable by the hold open force adjustment nut.

Model Adjustable range(kg-m)
CO/COU-152 0∼3.6
CO/COU-153 0∼3.1
CO-154 0∼2.7
CO-155 0∼3.7
CO-156 0∼1.5