Datasheet

Mass
(g)
Bore size (mm)
Standard mass
∗
Additional mass per each 15 mm of stroke
Mounting
bracket mass
Axial foot style
Rod side flange style
Double clevis style (With pin)
∗∗
16
320
6.5
27
21
10
∗ Mounting nut and rod end nut are included in the basic mass.
∗∗ Mounting nut is not included in double clevis style.
Calculation: (Example)
CLJ2L16-60
• Basic mass·················320 (ø16)
• Additional mass··········6.5/15
stroke
•
Cylinder stroke············60 stroke
320 + 6.5/15 x 60 + 27 = 373 g
∗ When selecting cylinders, refer to the Precautions and allowable kinetic energy
when locking on page 596, and then select a cylinder.
Stopping Accuracy (Not including tolerance of control system.)
(mm)
Lock type
Spring locking (Exhaust locking)
Pneumatic locking (Pressure locking)
Spring and pneumatic locking
Piston speed (mm/s)
50
± 0.4
±
0.2
100
± 0.5
± 0.3
300
± 1.0
± 0.5
500
± 2.0
± 1.5
Caution/Allowable Kinetic Energy when Locking
Bore size (mm)
Allowable kinetic energy (J)
16
0.17
Holding Force of Spring Locking (Maximum static load)
Bore size (mm)
Holding force (N)
16
122
Condition: Load: 2 kg
Solenoid valve: Lock port mounting
Note) Holding force at piston rod extended side decreases approximately 15%.
0 50 100 200 300 400 500
1
2
3
4
4.4
5
6
7
8
9
Load mass (kg)
Piston speed (mm/s)
0
50
100
150
200
0.1 0.2 0.3 0.4 0.5
Air pressure applied to pressurized locking port (MPa)
Holding force (N)
Holding Force of Pneumatic Locking (Maximum static load)
For detailed specifications of the fine
lock cylinder, Series CLJ2 mentioned
above, refer to pages 596 to 599.
Recommended Pneumatic Circuit/Caution on Handling
Caution
Caution when Locking
Holding force is the force which can hold a static load, given no vibration or impact, in a
locked state. Therefore, do not use cylinders around the maximum holding force. Note
the following points.
• If the piston rod slips because the lock’s holding force has been exceeded, the
brake shoe could be damaged, resulting in a reduced holding force or shortened
life.
• To use the lock for drop prevention purposes, the load to be attached to the
cylinder must be within 35% of the cylinder’s holding force.
• Do not use the cylinder in the locked state to sustain a load that involves impact.
Caution
1. In terms of specific load conditions, this allowable kinetic energy is
equivalent to a load of 3.7 kg in mass, and a piston speed of 300
mm/sec. Therefore, if the operating conditions are below these values,
there is no need to calculate.
2. Apply the following formula to obtain the kinetic energy of the load.
Ek: Kinetic energy of load (J)
m: Load mass (kg)
υ: Piston speed (m/s)
3. The piston speed will exceed the average speed immediately before
locking. To determine the piston speed for the purpose of obtaining the
kinetic energy of load, use 1.2 times the average speed as a guide.
4. The relationship between the speed and the load is indicated in the
graph below. The area below the line is the allowable kinetic energy
range.
5. During locking, the lock mechanism must sustain the thrust of the
cylinder, in addition to absorbing the energy of the load. Therefore,
there is an upper limit to the size of the load that can be sustained.
Thus, a horizontally mounted cylinder must be operated below the solid
line, and a vertically mounted cylinder must be operated below the
dotted line.
1
2
Ek = – mυ
2
603
Series CLJ2
Fine Lock Cylinder
Double Acting, Single Rod
CLJ2
CLM2
CLG1
CL1
MLGC
CNG
MNB
CNA
CNS
CLS
CLQ
RLQ
MLU
MLGP
ML1C
Individual
-X
D-
-X
P0595-P0668-E.qxd 08.11.17 2:57 PM Page 603