Ryobi Concealed Door Closer GEOPRO GC-4V Ryobi Concealed Door Closer GEOPRO GC-4V 1
Ryobi Concealed Door Closer
GEOPRO GC-4V
Ryobi Concealed Door Closer GEOPRO GC-4V
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■■■■ Concept of development
Ryobi Concealed Door Closer GEOPRO GC-4V
RACK AND PINION CLOSER
ADVANTAGE
・・・・Stable Speed Control・・・・Superior Ability against load・・・・180 degree openingDISADVANTAGE
・・・・Limited Closing Force Double Cylinders (Cam
RYOBI ORIGINAL FEATURE
To eliminate disadvantageous points of cam action closer, while keeping advantage of both cam action and rack and Pinion closers.
CAM ACTION CLOSER
ADVANTAGE
・・・・Stronger Closing Force・・・・Lower Opening Force
DISADVANTAGE
・・・・Speed Change
Open
Close
Single Arm Rack & Pinion Single Arm Rack & Pinion Single Arm Rack & Pinion Single Arm Rack & Pinion
・・・・Limited Closing Force ・・・・Bigger Opening Force
Double Cylinders (Cam
Action + Rack & Pinion)
Closer
Cam Action + Rack & PinionCam Action + Rack & PinionCam Action + Rack & PinionCam Action + Rack & Pinion Open
Close
0
10
20
30
40
50
0 40 80 120 160
Cam Action CloserCam Action CloserCam Action CloserCam Action Closer
・・・・Speed Change (Due to Small Oil amount)
・・・・Not More than 160 degreeOpening
Open
Close
Ryobi Concealed Door Closer GEOPRO GC-4V
■■■■ Mechanism
Ryobi Concealed
Door Closer
GEOPRO GC-4V
CAM ACTION MECHANISM
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RACK & PINION
MECHANISM
Ryobi Concealed Door Closer GEOPRO GC-4V
■■■■ Functions & Features
Latching Action Control Valve
LATCHING ACTION
This ensure to close the door firmly
by increasing the closing speed at 2
degree before closed position.
One Touch Joint Function
Arm and Slider can be jointed by
hand without tool. This shortens
the installation time.
2nd Closing Speed Control Valve
1st Closing Speed Control Valve
4
One Touch Joint Function
Spring Power Adjustment
Spring Power Adjustment
By this function, you can set the best closing
power according to the usage circumstances.
1st and 2nd Speed Control Valves
These independent valves enable you to adjust the
closing speed to according to the usage circumstances.
The door can be opened
with small force, and can
be surely closed with
ideal and stable closing
speed.
■■■■ Advantage of new features
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Specification Ryobi CG-4V Advantage
Inhibit deterioration of oil
Build-in auxiliary spring covers the lack of
closing force.
Speed Adjustment3 speed range The closing speed is adjusted depend on the
φ26、φ23
double cylindersCylinder
Ryobi Concealed Door Closer GEOPRO GC-4V
Speed Adjustment3 speed range
(1st、2nd、LA)
The closing speed is adjusted depend on the
condition
Temperature
Independence
〇Resin valve
To prevet from unstable speed change due to
the environmental temperature
Closeing Force
(by Spring)〇 Wider adjustment range of torque #1- #4 size
180°Opening 〇 Compatible with existing model can keep easily
Rightward /
Letward
△Individual setting
Due to Double cylinders system, the product is
handed.
※The installation dimentions of righthand and
left hand are same.
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■■■■ COMPARISON OF SPECIFICATIONS
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ModelRYOBI
GC-4V
EN1154 Standard
for EN2-4Will be planned in
future
Minimum Door40mm
Speed Adjustment
(3 speed range)
Spring Power
Adjustment
One Touch Join
Ryobi Concealed Door Closer GEOPRO GC-4V
Minimum Door
Thickness40mm
Speed Stability ○○○○
Speed Control Valves 3 speed range
Maximum
Opening Angle
180°
(according to
door design)
Durability 500,000
Closing Door Torque
(Adjustable)#1~~~~#4
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Ryobi Concealed Door Closer GEOPRO GC-4V
■■■■ DATA2. Oil Flow Amount
Oil
Flo
w A
mo
un
t In
sid
e C
yli
nd
ers
OIL FLOW AMOUNT
for GEOPRO CG-4V
7
Opening Angle
Oil
Flo
w A
mo
un
t In
sid
e C
yli
nd
ers
OIL FLOW AMOUNT
for CONVENTIONAL
CAM ACTION
CLOSER
BIG OIL FLOW
AMOUNT
DIFFERENCE
■■■■Improvement of Temperature IndependenceTemperature independence performance is improved by using new material of speed
control valve.
Head of valve is hexagon nut to prevent the damage of head. High expandable material
is used for valve and it makes possible to keep the closing speed even the temperature
change
Ryobi Concealed Door Closer GEOPRO GC-4V
20
25
Clo
sin
g T
ime fro
m 9
0 d
egre
es (
sec)
Temperature Independence
8
0
5
10
15
20
-15 -10 -5 0 5 10 15 20 25 30 35 40
ドルマ ITS96
リョービ GC-4V
TEMPARATURE( ℃ )
Clo
sin
g T
ime fro
m 9
0 d
egre
es (
sec)
Competitor D
RYOBI GC-4V
ーーーー Point of Improvementーーーー
Connection is possible without any
tools.
Easier and earlier installation is realized by snap-on mechanism
for the connection between Slider and Arm.
■■■■Other Improvement
Ryobi Concealed Door Closer GEOPRO GC-4V
9
Disconnection is possible.
Strong connection is kept after 500,000
cycles (Approx. 80N))))
Elastic projection eliminates noise at
operation by keeping zero clearance
between track-rail and arm.
Durability of hold open is 120,000.
Existing Version Improved Version
Elastic
Projection
Only Ryobi offer snap-on connection.
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Ryobi Concealed Door Closer GEOPRO GC-4V
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Ryobi Concealed Door Closer GEOPRO GC-4V
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